Biology College

Short tails (T) are dominant to long tails (t). What is the probability of a long-tailed mouse in the cross Tt x tt?
25%
50%
O 75%
O 100%

Answers

Answer 1

Answer:

50%

Explanation:

if you do a punnett  square you get two Tt and two tt. so two tt is half, which means half will be long-tailed tt, so 50%

Answer 2

50% of the mouse offsprings will have long tail.

According to this question, a gene coding for tail length in mouse is involved. The allele for short tails (T) are dominant to long tails (t).

In a cross between Tt (short tail) × tt (long tail), the following gametes will be produced by each parent:

Tt - T and ttt - t and t

Crossing these gametes in a punnet square (see attached image), the following offsprings of mouse will be produced: Tt, Tt, tt and tt.

Tt (2) = Short tail mice (50%)tt (2) = long tail mice (50%)

Therefore, 50% of the mouse offsprings will have long tail.

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Short Tails (T) Are Dominant To Long Tails (t). What Is The Probability Of A Long-tailed Mouse In The

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helpp please !!! thanks

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Answer: it would be b!

Explanation:

which cells have cell walls
a) animals
b) animal and plants
c) neither

Answers

Answer:

Plant cells have cell wall as well as a cell membrane. Animal cells simply have a cell membrane and no cell wall.

The answer is c I'm pretty sure. Hope this helps!

Pls help me.......... ​

Answers

Answer:i got u

Explanation:

Answer:

what in the world am I supposed to find

HELPPPPP
How many grams of LiCl are in 235.0 mL of 1.80 M lithium chloride solution?
1
Show Your Work

Answers

Answer:

Mass of LiCi = 17.9352 gm

Explanation:

Given:

Volume of LiCi = 235 ml

Molarity = 1.80 M

Find:

Mass of LiCi

Computation:

Atomic mass of LiCi = 6.9 + 365.5 = 42.4 gm

Mole(n) = Weight / Atomic mass

1.80 = [W / (42.4 x 235)]1000

Mass of LiCi = 17.9352 gm

❗❗ HELPPPPPPPPP PLEASEEEEEE ❗❗
Cystic Fibrosis is a genetic disease of the lungs caused by a recessive allele. A man with Cystic Fibrosis marries a woman who does not have Cystic Fibrosis, but her father had the disease. What is the probability of the couple having a child that has Cystic Fibrosis?

Answers

Answer:

There is no chance of child with the disease

Explanation:

As cystic fibrosis is a recessive disease homogeneous condition is required in child to have the disease . Since the mother is not suffering from the disease & there is no history in her family so she does not have the gene for cystic fibrosis

Explanation:

thankyou

What living things are important for the frog’s survival?
Can you pls list three?

Answers

Answer:

food, water, habitat

Explanation:

Answer:

Frogs need suitable land and freshwater habitats in order to survive. They also have highly permeable skin that can easily absorb bacteria, chemicals and other toxins.


Identical twins, who have inherited a gene associated with obesity, are adopted by different families. One is growing up in a very health
conscious family, while the other is growing up in a family that eats a lot of fast food and never exercises. Which statement describes the
likely weights upon reaching adulthood (correct answer will get brainliest) please answer :(

Answers

Answer: it’s c mister

Explanation:

PLEASE HELP!!!!!!!!!!

Answers

Answer:

More individuals are produced each generation that can survive. Phenotypic variation exists among individuals and the variation is heritable. Those individuals with heritable traits better suited to the environment will survive.

Which of the following is true about budding? Check all that apply, *
- The offspring usually breaks away from the parent.
- Happens only in multicellular organisms.
- The offspring is genetically identical to the parent.
- Happens only in unicellular organisms.
- The offspring is not genetically identical to the parent.
- Happens in multicellular and unicellular organisms.

Answers

Answer:

1,3,4

Explanation:

They are all correct because of what they say

What forces are acting on a dropped book that falls to the ground?

A Gravity Only

B Gravity and Air Resistance

C Air Resistance only

D Friction only


HURRY PLS

Answers

answer : B

reason: air resistance describes the forces that are in opposition to the relative moon of an object as it passes through the air , thus slowing the object down.

gravity pulls down objects to the earth using a magnetic field

Which of these elements is not likely to be found in an organic compound?
A. carbon
B. hydrogen
C. nitrogen
D. potassium

Answers

Answer:

D. potassium

Explanation:

Potassium is not found in an organic compound. Therefore, option D is correct.

What are organic compounds?

Any of a vast group of chemical compounds known as organic compounds contain one or more carbon atoms that are covalently connected to atoms of other elements, most frequently hydrogen, oxygen, or nitrogen.

The building blocks of life's components, such as carbohydrates, fats (lipids), proteins, and nucleic acids, are examples of organic substances. Petroleum and natural gas, which make up the majority of fossil fuels, are also organic molecules.

High molecular weights and complicated structures are features of organic molecules. These are usually insoluble in water but soluble in organic solvents. Potassium is not found in an organic compound. Therefore, option D is correct.

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PLEASE HELP ASAP
A diagram of meiosis I is shown below.

At which stage of meiosis I does the exchange in genetic material between homologous chromosomes result in recombinant chromosomes?

prophase I
metaphase I
anaphase I
telophase I

Answers

Answer:

The correct answer is - prophase I

Explanation:

Crossing over or recombination is the event that takes place during the pachytene stage of Prophase I of Meiosis I. During this event, the exchange in genetic material between non-sister chromatids of homologous chromosomes results in the recombination of the genetic material or recombinant chromosome.

Prophase I is the first stage which is characterized by the condensation of the chromosome and form tetrad and appeared to be X like structure in the cell and followed by the crossing over or genetic exchange of homologous chromosomes.

A woman with a straight hairline has as child with a man who is heterozygous
and has a widow's peak.
What is the mother's genotype?

Answers

Answer:

aa

Explanation:

A widow's peak is the dominant genotype so one must not have that trait. If it was presented then the woman would have the genotype.

A widow's peak is dominant so the man would be either AA or Aa. Since it stated that his is heterozygous (Hetero meaning two different), his genotype would be Aa (again since a widow's peak is the dominant, it only needs one dominant genotype)

1) Which is the variation
stage and why?

Answers

Did you forgot to add a picture?
think you forgot to add a picture but a variation stage is a method for dealing with rapidly varying environments without requiring mutation

How many codons are in the following mRNA sequence?
AUAUCUAGGCUU*

Answers

Answer:

4

Explanation:

Codons are usually in groups of 3. So AUA-UCU-AGG-CUU

Answer: 5

also try using the 6.6-6.7 bio flashcards on quizlet they might help

Removes water from waste and puts it back into the body; waste turns into solid here. *
​

Answers

This is the kidney.

The kidney also filters urea.

Hope this helps.

The difference between z and 8

Answers

Z is a letter, 8 is a number

Please answer fast!

Answers

Answer:

C

Explanation:

Double stranded is a characteristic of

1. DNA
2. RNA
3. Both DNA and RNA
4. Neither

Answers

The answer to this question is 1.DNA because RNA is single stranded.
The answer is DNA because DNA is a double helix and RNA isn’t.

"The bird has brown spots on its wings" is an example of an inference,
True
False

Answers

Trrue because that’s the answer I chosen

Which part of a plant is the least complex

Answers

Answer:

Cells are the least complex part of a plant :>

Explanation:

Why are Mercury Seasons difficult to determine? Explain why.​

Answers

Mercury's seasons are difficult to determine. This is because it has virtually no tilt (0.03 degrees), but a highly elliptic orbit. ... Mercury also has a bizarre rotation, spinning three times (every 53 Earth days) over two rotations around the Sun, making it impossible to tell when one season begins and one ends.

Two Drosophila with genotypes AABBCC and aabbcc are crossed to produce a heterozygous offspring, AaBbCc (the gene order is unknown). This AaBbCc Drosophila is crossed with an aabbcc Drosophila, resulting in the offspring below: Number: Phenotype: 600 ABC and abc 200 AbC and aBc 150 ABc and abC 50 Abc and aBC a. Which phenotype represents the double crossovers

Answers

Answer:

The double recombinant individuals are less frequent ---> Abc and aBC

Explanation:

We can know if genes are linked, by looking at the progeny distribution. In a tri-hybrid cross, If individuals, whose genes assort independently, are test crossed, they produce a progeny with equal phenotypic frequencies 1:1:1:1:1:1:1:1. If we observe a different distribution, meaning that phenotypes appear in different proportions, we can assume that genes are linked in the heterozygote parent.

We can recognize the parental gametes because their phenotypes are the most frequent in the descendants, while the double recombinants are the less frequent. Finally, the simple recombinant gametes are the ones with intermediate phenotypes frequencies.  

In the present example, the phenotypic ratio shows different proportions than the expected ones if they were not linked.

We can recognize the parental gametes in the descendants because their phenotypes are the most frequent,

ABC and abc   600    

while the double recombinants are less frequent.

Abc and aBC  50  

And simple recombinant gametes produced by the cross, which frequencies are intermediate.  

AbC and aBc 200 ABc and abC 150

a. Which phenotype represents the double crossovers

The double recombinants are less frequent ---> Abc and aBC

 

Which of the following structures provides support and movement ?


A. Heart and skin.
B. Nerves and brain
C. Lungs and spine.
D. Bones and muscles

Answers

D. Bones and Muscles

what is a electrocardiograph technician​

Answers

Electrocardiograph (EKG or ECG) technicians operate equipment that measures, monitors, and graphically traces the electrical activity of the heart. Physicians use the graph (electrocardiogram/EKG/ECG) to diagnose and monitor patients' heart problems.

If you cross a white-eyed female (ww) to a red-eyed male (WY) Drosophila fly, you will see red-eyed females and white-eyed males in the F1 generation. If you cross an F1 red-eyed female to an F1 white-eyed male, what is the approximate percentage of total progeny in the F2 generation that are white-eyed males

Answers

Answer:

25%

Explanation:

ww gives white-eye female

WY gives red-eye male

       ww    x    WY

 F1: Ww   wY   Ww   wY

Ww - red-eye female

wY - white-eye male

Crossing the two F1

           Ww    x    wY

F2: Ww   WY   ww   wY

Remember that white-eye male = wY

Percentage of wY = 1/4 or 25%

Hence, the percentage of progeny in the F2 generation that would be white-eye males = 1/4 or 25%

Organic compounds are used as buildings?

Answers

Explanation:

your answer is true, organic compounds are used as buildings

Which label is missing from the diagram?



A. microscopic organisms
B. sharks
C. whales
D. decaying plants and animals

Answers

Where is the diagram?

QUESTION 9
At which stage of mitosis do chromosomes line up at the equator (middle) of the cell?
anaphase
metaphase
telophase
prophase

Answers

Answer:

I think prophase. Correct me please.

Answer:

the correct answer be "Metaphase"

the producers had 6,000 kcal of energy , how much would be passed to the primary consumer?

Answers

Answer:

600 kcal

Explanation:

In an ecosystem, energy is transferred from one organism in a trophic level to another organism in another trophic level. Organisms called PRODUCERS are capable of deriving energy from the sun. However, when fed upon by PRIMARY CONSUMERS, only about 10% of the energy is transferred to them because most of the energy (90%) is lost as heat.

Hence, in this case where the producers had 6,000 kcal of energy, 10% i.e. 10/100 of 6000 = 600 kcal of energy will be transferred to the primary consumers.

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