Fruit flies (Drosophila melanogaster) with a wild-type phenotype have gray bodies and red eyes. Certain mutations can cause changes to these traits. Mutant flies may have a black body and/or cinnabar eyes. To study the genetics of these traits, a researcher crossed a truebreeding wild-typed male fly with a true-breeding female fly with a black body and cinnabar eyes. All of the F1 progeny displayed a wild type phenotype. Which of the following is correct about the traits observed?a. Gray body and cinnabar eyes are dominant.b. Eye color is sex-linked.c. Body color is sex-linked.d. Gray body and red eyes are dominant.

Answers

Answer 1

Answer:

d

Explanation:

The correct answer would be that gray body and red eyes are dominant.

The wild type trait  is represented by gray bodies and red eyes while the mutant trait  is represented by black body and/or cinnabar eyes. A cross between the wild type and the mutant only yield F1 offspring with wild type phenotype. This, thus, means that the wild type trait is dominant while the mutant trait is recessive.

Since the wild type trait is depicted by gray body and red eyes, it means that the gray body and red eyes traits are dominant while the black body and cinnabar eyes are recessive.

The correct option is d.


Related Questions

Help please asap Need answer please asap

Answers

Division that makes offspring= mitosis
division to make unique individuals= meiosis
division that happens in body cells= both
division that happen in sex cells=meiosis
division to make clones= mitosis

Answer:

Explanation:

Look below

Plasmodium is an organism with both sexual and asexual life cycles. Describe the most likely cause of a heritable phenotypic change in some members of a population of asexually reproducing organisms. Explain how repeated exposure of the artesunate-sensitive Plasmodium strain to increasing concentrations of artesunate led to the development of the artesunate-resistant Plasmodium strain.

Answers

Answer:

Mutation.

Explanation:

Mutation in the organism's DNA that is passed on to the offspring is that main cause of heritable phenotypic change in some members of a population that reproduces asexually. Repeated exposure of Plasmodium that is sensitive to artesunate strain to increasing dosage of artesunate led to the development of resistance in plasmodium because the genetic mutation occur in the plasmodium that provide resistance against artesunate.

A unicellular eukaryotic organism that infects and lives in insects and vertebrates as a parasite is called plasmodium. They are single-celled organisms that undergo both types of reproductive life cycles.

The mutation caused a heritable phenotypic change in some members of a population of certain type of reproducing organisms.

The mutation in the plasmodium strain can be explained as:

Some organisms of certain reproducing type happened to be mutated causing a heritable phenotypic change in their offspring's.

When the plasmodium strain was repeatedly exposed to artesunate which altered some of the species in becoming resistant instead of being sensitive.

The increased dosage or exposure caused a mutation in some type of certain reproducing strains causing them to be resistant to the amount.

Therefore, the mutation caused the heritable phenotypic change.

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Cork cambium is the protective tissue of a stem. What mechanism does it use to protect the stem? HINT: It's not A.

A. Deposits of water in the cork cambium act as a barrier and protect the stem from water loss, physical damage, and invasion of pathogens.

B. Deposits of minerals in the cork cambium act as a barrier and protect the stem from water loss, physical damage, and invasion of pathogens.

C. Deposits of oils or waxes in the cork cambium act as a barrier and protect the stem from water loss, physical damage, and invasion of pathogens.

Answers

Answer:

The answer should be C. The cambium produces a waxy substance called suberin which repels water so..

Answer:

B. DEPOSITS OF MINERALS IN THE CORK CAMBIUM ACT AS A BURRIER AND PROTECT THE STEM FROM WATER LOSS, PHYSICAL DAMAGE, AND  INVASION OF PATHOGENS..

Explanation:

A & C is wrong! just took the test and got it wrong. neither one is right. THE ANSWER IS B.

Animals cells use a process called___ in order to convert ____ and _____ into ____ and ___. This process mainly occurs in the ______ of the cell

Answers

Answer:

Animal cells use a process called cellular respiration in order to convert oxygen and glucose into carbon dioxide and water (and also ATP). This process mainly occurs in the mitochondria of the cell

Explanation:

All camels are basically similar in structure. They have developed adaptations for coping with both heat and dehydration.
Which of the following does not benefit the camel as a means of preventing dehydration?

a.Camels can extract water from their solid wastes.
b.Camels' ears are lined with fur to keep out sand and other blowing matter.
c.Their kidneys are capable of concentrating urine to reduce water loss
d.Camels are able to locate water in any environment.

Answers

Answer: b

Explanation:

Camels ears are lined with fur to keep out sand and other blowing matter

The Cambridge family includes the unusually shaped Arabian camel (Camelus dromedarius), also referred to as the one-humped camel. This animal is perfectly suited to the harsh desert climate and high levels of heat stress. Thus, option B is correct.

What camels are adaptations for heat and dehydration?

Camels have evolved to survive in extremely hot and cold climates.In contrast to many other mammals, camels store the majority of their body fat in their humps, which allows for better thermoregulation. It makes it easier for them to release heat from their body in hotter climates. Camels rarely perspire.

Camels are ideally suited for desert survival. They have developed wide, flat feet to disperse their weight across the sand, among other adaptations. Thin fur everywhere to allow for rapid heat loss, and dense fur on the top of the body for shading.

Therefore, The kidney may be able to retain water if the generation of cholesterol is reduced. Camels produce pee that is highly concentrated, retaining the maximum amount of water.

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A phenotypic ratio of 9:4:3 is indicative of __________.


A. Codominance
B. Polygenic inheritance
C. Epistasis
D. Multiple alleles

Answers

Answer:

a

Explanation:

The phenotypic ratio is the depiction and the relation of the occurrence of the phenotype in the offspring. The phenotypic ratio of 9:4:3 indicates codominance. Thus, option A is correct.

What is codominance?

Codominance is the inheritance where both the recessive and the dominant allele are expressed in the offspring independently to produce the individual with the expression of both the trait separately.

The blood group, eye color, roan cattle, flower colors, sickle-cell anemia, etc., are some examples that show the pattern of codominance. The phenotypic ratio suggests the occurrence of the physical traits in the offspring that are visible.

In codominance, the phenotypic ratio is 9:4:3 as both the traits possessing alleles are independently expressed in the next generation.

Therefore, 9:4:3 is the phenotypic ratio of codominance.

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which is an example of a secondary energy source?

a.solar
b.coal
c.electricity
d. nuclear

Answers

Answer:

COAL

Explanation:

Secondary energy refers to the more convenient forms of energy which are transformed from other, primary, energy sources through energy conversion processes. Examples are electricity, which is transformed from primary sources such as coal, raw oil, fuel oil, natural gas, wind, sun, streaming water, nuclear power, gasoline etc., but also refined fuels such as gasoline or synthetic fuels such as hydrogen fuels.

Answer:

coal is an example of secondary energy source.

The movement of glucose across a plasma membrane is achieved by

Answers

Answer:

facilitated diffusion

Explanation:

An organism can only be seen through a microscope. Which is most likely true of that organism?

Group of answer choices

It is multicellular

It is a plant

It is single-celled

It is an animal

Answers

Answer:

I want to say that the answer is C. It is single-celled.

Explanation:

I hope this helps!

Answer:

option C : it is single celled organism .

Explanation:

hope this will be helpful to you .if you find it useful please mark my answer as brainlist.

Which of the following is paired correctly? *
Phenotype- BB
O Genotype- Ft
Acquired trait-eye color
Inherited trait-tattoo

Answers

The answer is the genotype

Transcription is the beginning of protein synthesis. Some of the following sentences describe events that occur during the process of transcription in eukaryotes. Determine which sentences describe steps in the process of transcription, and then place them in the chart in the order that they occur.

Answers

Answer: 1-the enzyme separates... 2.the enzyme rna polymerase binds... 3.rna polymerase... 4. The rna molecule (called a transcript)...

In sexual reproduction, a new organism is produced when

a. cells divide by mitosis.

b. sex cells combine.

c. an organism divides into two equal parts.

d. a new organism grows from the body of its parent

Answers

Answer:

D

Explanation:

D is the awnser becuase the new organism cannot split the mitosis, look at the meiosis and the mitosis diagram

A track and field coach is trying to decide what beverage is the best pre-training beverage for athletes to drink before a daily training session. The coach has chosen three beverages: a soda, a Gatorade, and water for the athletes to drink before training. The coach will then collect data on their performance during the period of time while training.
Afterward, the coach will track the performance of the athletes over an eight week period to see how their performance has changed.


What is the best Hypothesis for the experiment above? Explain why that is the best Hypothesis.

Answers

Answer:

The correct answer is - "which beverage would help athletes the best if he takes it before a daily training session".

Explanation:

The coach is trying to decide which beverage is going to help best for the athletes before their training session. He tried soda, water, and Gatorade and compare the data he gets after his experiment.

According to his experiment, he wanted to find the best beverage that will help athletes best. For this, the best hypothesis would be "which beverage would help athletes the best if he takes it before a daily training session", as it provides the real idea of the experiment.

An acoustic neuroma is a tumor that arises from neurolemmocytes surrounding the vestibular portion of the vestibulocochlear nerve. The tumor is benign, but generally grows within the confined space of the petrous part of the temporal bone, thus compressing the nerve and creating problems with balance and hearing loss. What other, nearby nerve would you expect to also be affected by this tumor

Answers

Answer: The nearby nerve that can be affected by this tumour is the FACIAL NERVE.

Explanation:

As stated in the question, the acoustic neuroma is a tumor that arises from the vestibular portion of the vestibulocochlear nerve which is the VIII ( 8th) cranial nerve.

VESTIBULOCOCHLEAR NERVE: These nerves are composed of two distinct sets of fibres, vestibular nerves and cochlear nerves.

The vestibular nerves arise from the semicircular canals of the inner ear and convey impulses to the cerebellum. They are associated with the maintenance of posture and balance. The cochlear nerves originate in the spiral organ in the inner ear and convey impulses to the hearing areas in the cerebral cortex where sound is perceived.

The Facial nerve, also called the 7th cranial nerve, which are the motor fibres that supply the muscles of facial expression. It lies adjacent to the vestibulocochlear nerve as they pass through the internal auditory canal which is located at the petrous part of the temporal bone. As the tumor grows, the facial nerve would be affected because it's the closest nerve to the VESTIBULOCOCHLEAR nerve..

match the correct word to its definition

Answers

Meiosis is the first one on top. Mitosis is the second one and dna is the last one

Which diagram represents binary fission?

Answers

Answer:

Diagram A

Explanation:

This is because binary fission is asexual reproduction by a separation of the body into two new bodies. In the process of binary fission, an organism duplicates its genetic material, or deoxyribonucleic acid (DNA), and then divides into two parts (cytokinesis), with each new organism receiving one copy of DNA.

A scientist noticed that in acidic pond water some salamanders developed with curved spines. This was an example of a(n)
А
research
o
B
inference.
о
С
observation
D
hypothesis

Answers

Answer:

С  observation

Explanation:

This mode of investigation is an example of observation.

Observations are carried out using our senses and keen inquisitiveness. It can take place within a short period of time or an extended duration.

So; noticing the change in shape of the salamanders is making an observation.

Our sight, smell, taste e.tc are all observational tools.

Answer:

С. observation

Explanation:

Hope this will help

Can you help me with 1 please

Answers

The answer is option D. We have no way of knowing the number of revolutions of the planets.
The answer should be D

Which is a possible outcome for future generations of farmers if the same crop is planted on the same patch of land every year?

the soil could become infertile due to the lack of time for nutrients to be reinserted

the crops could become resistant to pests and insects through natural selection

the soil could become drought resistant due to the shallow root structure that would form

the crops could begin to change their genetic makeup due to mutations from the parent plants

Answers

Answer:

A

Explanation:

I hope this helps :)

The soil could become infertile due to the lack of time for nutrients to be reinserted. So, the correct option is (A).

What is Soil?

Soil is also defined as earth or dirt which is a mixture of organic matter, minerals, gases, liquids and organisms which together support life. These are distinguished from silt by restricting the former term specifically to displaced soil.

It provides many important services for both people and the planet by putting food on our plates, purifying our water, protecting us from floods and combating drought. Soil is also important in combating climate change because it captures and stores large amounts of carbon. Without healthy soil there is no food security.

Whereas growing the same crop year after year reduces the availability of certain nutrients and depletes the soil. Monoculture leads to soil exhaustion when the soil becomes deficient in these nutrients.

Thus, the soil could become infertile due to the lack of time for nutrients to be reinserted. So, the correct option is (A).

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Invert syrup is a widely used sweetener, especially in candies and highly processed foods. Invert syrup can be made by treating sucrose with either an enzyme called sucrase or by heating sucrose with an acid. The end result is the same: each molecule of sucrose is hydrolyzed, resulting in _

Answers

Answer:

one glucose and one fructose molecule

Explanation:

Generally, inverted sugar is a mixture of two monosaccharides or simple/reducing sugars. More specifically, inverted sugar is a mixture of glucose and fructose.

Sucrose is a disaccharide containing one molecule of glucose and one molecule of fructose. Hence, when hydrolyzed, the glycosidic bond linking the glucose molecule with the fructose molecules becomes broken and the resulting product is a mixture of glucose and fructose molecules in equal proportions.

I need help asappppp plz

Answers

Answer:

C

Explanation:

3. Which of these methods uses rock layer and bones to support the
theory of evolution? *
20 points
a. Embryology
b. Biogeography
c. Molecular biology
d. Fossil record

Answers

Answer:

D fossil record

Explanation:

Depending on what layer of earth the fossil was recorded then they could determine a rough date. Then they would use carbon dating to be more exact.

Answer: B.

Explanation: well, I'm just thinking it is?

How do the different components of the system interact? How do organisms live, grow, respond to their environment, and reproduce?`

Answers

Each individual body system works in conjunction with other body systems. Each of your body systems relies on the others to work well. All living organisms are made of cells.. organisms to stimuli from their environment and actively maintain their internal environment through homeostasis. They grow and reproduce, transferring their genetic information to their offspring.

How can your nose signal a problem?

Answers

Answer:

Your nose is part of your sinus system (ew!) and it can tell you if you're sick by a runny nose, congestion, and sniffles.

Answer:

It can detect dangers, both inside and outside the body.

Explanation:

Outside of the body, of course, it can smell smoke and things like that, but if you're going into diabetic ketoacidosis, you'll smell a very sweet, fruity smell before you start to have seizures and other effects.

What is the process by which new oceanic crust is?​

Answers

Explanation:

Subduction happens where tectonic plates crash into each other instead of spreading apart. At subduction zones, the edge of the denser plate subducts, or slides, beneath the less-dense one. The denser lithospheric material then melts back into the Earth's mantle. Seafloor spreading creates new crust.

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Explain why animals are dependent on light energy​

Answers

Answer:

Animals are dependent for multiple reasons.

Explanation:

The energy is transferred to animals when they eat plants. They also need it because vitamin D is given when animals get sunlight on their bodies, building strong bones and healthy marrow. The same happens when they eat vitamin D-rich plants. Hope this is helpful!

Plants transfer the energy from the sun(solar energy)to animals.Animals also get Vitamin D by consuming plants so when the sunlight falls on the skin,it provides vitamin D which helps in the formation of strong bones and teeth.

Radiation that is redshifted has the peaks of its waves
A.with more energy
B.closer together
C.both closer together and with more energy
D.farther apart

Answers

Answer:

A) With More Energy

Explanation:

Answer:

D

Explanation:

i never get anything wrong ever

Why is DNA locked in the nucleus of the cell?​

Answers

Answer:

Inside the nucleus lies the blueprint that dictates everything a cell will do and all of the products it will make. This information is stored within DNA. The nucleus sends “commands” to the cell via molecular messengers that translate the information from DNA.

Explanation:

Answer:

In organisms called eukaryotes, DNA is found inside a special area of the cell called the nucleus. Because the cell is very small, and because organisms have many DNA molecules per cell, each DNA molecule must be tightly packaged. ... Researchers refer to DNA found in the cell's nucleus as nuclear DNA.

what's the best sativa strand? ​

Answers

Answer:

GREEN CRACK PUNCH. or  HAZE BERRY.

Explanation:

Answer:

haze berry is the sativa strand

To a large extent, a protein's function is dependent upon its shape. What determines a protein's shape?
The number of amino acids
O The sequence of amino acids
O The number of peptide bonds
O The location of the active site

Answers

Answer:

The sequence of amino acids

Explanation:

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