Answer:
Charles Darwin had a theory that states that evolution happens by natural selection. Individuals in a species show variation in physical characteristics. ... As a consequence those individuals most suited to their environment survive and, given enough time, the species will gradually evolve.
The theory of natural selection was proposed by Charles Darwin. Darwin postulated that species could change over time.
What is the theory of natural selection?The adaption by organism according to the surrounding environment is natural selection. It drives evolution.
Individuals in a population vary naturally. It means they are all different in some ways.
This variation means that some individuals have traits that suit better to the environment as compared than others.
This causes the species to change over time.
Thus, the process by which these changes take place is natural selection.
For more information regarding natural selection, visit:
https://brainly.com/question/9830102
#SPJ2
‼️‼️‼️‼️HELP HELP HELP HELP HELP WHOEVER CAN PLEASE‼️‼️‼️‼️
Answer: i would say b!
Explanation:
hope i helped! :D
Mutations and variation occur randomly. True\ False
Answer:
true
Explanation:
A strain of Drosophila known as dunce produces one-half the amount of cAMP phosphodiesterase found in wild-type flies, which causes a learning defect. Another strain of Drosophila known as rutabaga produces a defective adenylyl cyclase protein (one of the AC types expressed in most cells) and also causes a learning defect. A dunce - rutabaga double mutant fly has relatively normal learning. Explain these curious observations.
Answer:
From the given observations we can say that there are 2 genes that are responsible for normal learning. It is also given that the dunce and rutabaga mutations are the mutations of 2 different genes.
Due to complementation which is a phenomenon of restoration of normal phenotype if mutants are crossed, it is found that the flies have normal learning behavior if both mutants are crossed.
Let's assume that the Drosophila having this learning effect and it is due to genes D and R where D is the normal gene and dd is the case of mutation that results in duncy phenotype. Similarly, Gene R is responsible for normal learning, and rr results in rutabaga phenotype.
Cross between ddRR (duncy) x DDrr (rutabaga)
Gametes - dR x Dr
F1 progeny - DdRr
Thus, in heterozygous cases, a single copy of both wild-type alleles D and R complement each other.
What animal is this
URGENT PLEASEEEE
How and where is starch stored in the red cedar oak tree
ill mark brainliest to first good answer
Answer:
They are large molecules that blind readily with proteins , cellulose, starches and minerals.
Explanation:
it hides into leather
4
In this paragraph, does the word "once" help show a cause-and-effect
relationship? Support your answer with evidence from the text.
Do dead trees have cells
Identify the correct sequence of molecules, as a gene goes from coded information in the nucleus, to the product the cell wants to make.
A. DNA to mRNA to tRNA to Protein
B. DNA to tRNA to mRNA to Protein
C. DNA to tRNA to Protein to mRNA
D. Protein to mRNA to tRNA to DNA
Answer:
your answer is A
Explanation:
DNA -> messenger (M) RNA -> transfer (T) RNA -> to protein.
The influence of greenhouse gases on temperature is called the greenhouse effect. Based on what you have seen, how do greenhouse gases affect the heat flow into and out of Earth’s atmosphere?
Answer:
it effects the ozone which keeps out a majorty of the the suns raditon
Answer:
Greenhouses gases affect the heat flow into and out of (mostly out of) the Earths atmosphere by trapping heat inside the atmosphere and raising global temperature over time.
Explanation:
A farmer is trying to increase the diversity of corn kernel color in his crops. The trait for corn color is controlled by two alleles. Yellow corn (B) is dominant over white corn (b). Which combination of corn should he cross to get the most variety of genotypes for corn color in the next generation?
A. BB x BB
B. Bb x bb
C. Bb x Bb
D. BB x bb
Answer:
C
Explanation:
If the farmer crosses Bb x Bb, then the progeny will have BB, Bb and bb genotypes attributing to increased diersity of corn kernel color in his crops.
What is a genotype?The total complement of an organism's hereditary material is referred to as its genotype. The alleles or variants that an individual carries in a specific gene or genetic region are also referred to as their genotype. Genotype is another term for them.
There are three distinct categories of genotypes: heterozygous recessive (pp), heterozygous dominant (PP), and homozygous recessive (pp). Both the dominant homozygous genotype and the dominant heterozygous genotype exhibit the same characteristics.
Therefore, if the farmer crosses Bb with Bb, the offspring will have BB, Bb, and bb genotypes, which will contribute to an enhanced diversity of corn kernel color in the farmer's harvests.
Learn more about genotypes, here:
https://brainly.com/question/14928544
#SPJ2
Two organisms within the same family can be organized into several related
orders
kingdoms
phylum
genus
Answer:
Phylum and Kingdoms
Hopefully this is right.
Which of the following is the correct equation for GPE?
A. Height x mass x gravitational field strength
B. (mass x height) gravitational field strength
C. None of these
D. (mass x gravity) height
Answer:
C. Nenhum desses
A GPE é dividida em quatro variáveis:
• Anamnese: histórico de saúde, ambiente e hábitos de vida;
• Estrutura Corporal: massa e altura; perímetros, dobras cutâneas e avaliação postural;
• Função da estrutura corporal: identificação das fragilidades corporais, mobilidades e estabilidades;
• Função Cardiorrespiratória: determinação do consumo máximo de oxigênio, intensidade do treinamento, frequência cardíaca em repouso e no esforço, pressão arterial em repouso e no esforço e limite anaeróbio
HELP ASAP- 13POINTS
- explain the disease of flea
- how it is caused
- symptoms
- lifecycle of the disease with diagram and treatments
Answer:
that looks complicated
Explanation:
please do not answer other's question if you don't know the answer
All of the following are composed of body cells EXCEPT
a. bone
b. kidney
c. liver
d. sperm
a _____ time scales divides earths history into divisions that are based on major changes in geology, climate, and the evolution of life
What should you do if you mention the work of other scientists in your own reports?
A.Cite your references and give credit to the other scientist.
B.Avoid saying that the work was done by someone else.
C.Change the other scientists ideas to match your own.
D.Avoid mentioning the name of the other scientist.
which organelles are important to the life process of metabolism
Answer:
Cellular Metabolism
Explanation:
Im pretty sure thats it!
Answer:
the mitochondrion and the chloroplast.
Explanation:
Phosphate is present in
A. DNA
B. RNA
C. Both DNA and RNA
D. Neither
Answer:
c)both DNA and RNA
explanation
When it is attached to a molecule containing carbon, it is called a phosphate group. It is found in the genetic material DNA and RNA, and is also in molecules such as adenosine triphosphate (ATP) that provide energy to cells. Phosphates can form phospholipids, which make up the cell membrane.
How is physical weathering different from chemical weathering?
A.
Physical weathering is always faster than chemical weathering.
B.
In chemical weathering, the composition of the weathered substance is changed.
C.
In physical weathering, the composition of the weather substance is changed.
D.
Chemical weathering is always faster than physical weathering.
Answer:B. In chemical weathering, the composition of the weathered substance is changed.
Explanation: Chemical weathering is the act of changing its form, such as color. Physical weathering remains in its shape, but can change due to breaking into smaller sediments.
The gene for nose shape is found on the X chromosome. Round nose is dominant to pointed nose. Human individuals with XXY (an additional X chromosome) are designated male. Individuals with XO (only one X chromosome) are designated female. Identify the possible nondisjunction events (rare mistakes during meiosis) that could explain the phenotype of the offspring. An XY parent with a round nose and a XX parent with a round nose have an offspring with Klinefelter Syndrome (genotype XXY) with a pointed nose.
Answer:
Explanation:
in this case female parent XX is hetrozygous for round nose. when a cross between round nose father XY and hetrozygous round nose mother takes place and suddenly a chromosomal nondisjuction occurs, the chromosomes carrying genes for pointed tip nose come togather in a gamete and a gamete (egg) with XX chromosomes is appeared having 24 chromosomes instead of 23. when this gamete fertilizes with a sperm having normal 23 chromosomes and only carry Y chromosomes, a pointed nose klienfelter syndrome case will appear.
If the anticodon of a molecule of tRNA has the sequence GAU, what was the original DNA sequence?
Answer:
CTA
Explanation:
DNA to RNa
A---> T
C--> G
RNa to dna
A--> U
C---> G
If the anticodon of one molecule of tRNA contains the sequence GAU, then CTA was the original DNA sequence.
What is DNA sequencing?
DNA sequencing is defined as the laboratory procedure used to determine the exact sequence or order of the four building blocks or bases that make up DNA. Information that is stored in DNA in a code which is formed by arranging the four bases which are adenine, cytosine, guanine and thymine which are identified by letters A, C, G and T in different order.
Within double-stranded DNA, nitrogenous bases on one strand pair with complementary bases on the other strand. A always pairs with T, and C always pairs with G, during DNA replication, the two strands separate into a double helix.
Sequence of tRNA is GAU, so the DNA sequence is CTA as C complements to G, A to T and U to A as in RNA Uracil is present in the place of thymine.
Thus, if the anticodon of one molecule of tRNA contains the sequence GAU, then CTA was the original DNA sequence.
Learn more about DNA sequencing, here:
https://brainly.com/question/29925842
#SPJ2
What do all members of the swine species always have in common?
They always occupy the same position in the food web no matter where they live.
They are always preyed upon by the same predators.
They always occupy the same habitat at the same time.
They always have the same number and kinds of chromosomes.
Answer:
The members of the swine species always have the same number and kinds of chromosomes.
Answer:
d
Explanation:
i took the test
6th grade science
Rock transformation lesson 3.3
Preparing to Model Rock Transformations
There are seven possible processes. How many processes do you think your rock material will go through?
A. All of them. (Any rock material can transform into any other rock material.)
B. Only one. (Each rock material can only be transformed once.)
C. Some of them. (Each type of rock material can only go through certain processes.)
D. Some of them. (Rock material can transform in any way, but my rock might not go through all of the processes.)
Answer:
A .All of them .( Any rock material can transform inTo any other rock.material)
Answer: A
Explanation: A. All of them. (Any rock material can transform into any other rock material.)B. Only one. (Each rock material can only be transformed once.)C. Some of them. (Each type of rock material can only go through certain processes.)D. Some of them. (Rock material can transform in any way, but my rock might not go through all of the processes.)
please help a girl out with these 2 questions thanks lol
Answer: first photo in my opinion would be d or c, but mostly d!
2nd photo would be either a!
hope i helped!
50 POINTS PLUS BRAIN-lIST IF YOU DO ALL THE QUESTIONS!!!!!
1. (2 points) On the map, label two high-pressure areas with the letter H.
2. (2 points) On the map, label two low-pressure areas with the letter L.
3. (3 points) Explain, using complete sentences, over which area(s) would you expect to see rain or snow?
4. (3 points) Explain, using complete sentences, over which area(s) would you expect to see clear skies?
READ THIS:
In the northern hemisphere, the wind blows clockwise around centers of high pressure. The wind blows counterclockwise around lows. It is the opposite in the southern hemisphere.
5. (2 points) Draw arrows around one of the Highs (H) on the map to show the wind direction. (snip the map again to draw arrows on it)
6. (2 points) Draw arrows around one of the Lows (L) on the map to show the wind direction. (snip the map again to draw arrows on it)
7. (3 points) Imagine that you live in Maine. Currently there is a high-pressure area over Maine. If a low-pressure area moves in, how will the direction of the wind change? Explain in complete sentences.
8. (3 points) Imagine that you live in Colorado. Currently there is a low-pressure area over Colorado. If a high-pressure area moves in, how will the direction of the wind change? Explain in complete sentences.
Answer:
need more info please and thank you
Explanation:
arm
QUESTION 9
Cooler air can hold less water than
warm air.
ast
O TRUE
old air
een
O FALSE
and
QUESTION 10
cheferant in many
Answer:
9 true
Explanation:
On the first day after arriving in Miami for spring break vacation, Matt plays out in the sun for six hours. Later that night he notices that the skin on his legs and arms becomes red, swollen and extremely painful. By morning all of the afflicted areas have developed numerous blisters. These areas cover about 30% of his trunk (front and back) and 40% of the arms and legs.What organ has been damaged? What general types of tissue have been afflicted?What type of burn has Matt received? Explain.List ALL layers of the skin that have been damaged.What tissue repair process causes the blistering?List all of the body functions that may be disrupted by such a burn.After a few days his skin peels and the burned areas begin to heal. Matt notices that the healing areas are more susceptible to injuries due to chafing or trauma. During the next week after Matt returns to Tampa, Maria tells him that a sunburn prepares his skin for a deep tan. Maria encourages him to quickly begin tanning sessions at a local tanning salon before the effects of the burn wear off.What has happened to the skin that would cause this increased susceptibility?What would you advise him to do? Why?Is a deep tan a sign of skin that is healthy or severely stressed? Explain.
Answer:
Miami is is kanada
Explanation:
its c
The question the scenario shows suggests, the integumentary system of Matt is affected, this system is part of the skin.
What is sunburn?A person having lesser melanin content in their skin has the risk of developing redness, swelling, and pain in the skin indicative of cellular damage caused by excessive sun UV radiation, this is known as sunburn.
Matt received a second-degree sunburn, which affects the dermal and epidermal layers of the skin. The inflammatory stage, proliferation stage, and matrix remodeling are the tissue repair process.
The skin is the first line of defence and acts as a barrier, after this injury affect this line of defence is affected causing entry of pathogens inside the body.
In absence of the epidermis, when the dermis is exposed, easily bruises and injury occur since blood vessels are exposed to the skin's surface.
Therefore, excessive exposure to the UV light creates deep tan signs.
Learn more about sunburn, here:
https://brainly.com/question/26609703
#SPJ2
Oil is a nonrenewable resource because it:
is made from plant remains
will never run out
takes millions of years to make
is quickly and easily made
Answer:
C. Takes millions of years to make
What will happen if you heat a liquid to high temperatures?
Question 3 options:
It will become a colloid.
It will become a solid.
It will become plasma.
It will become a gas.
Answer:
D. It will become a gas.
Explanation:
I go to k12 and got it right. Science Unit 2 Test.
Within a population, the different colors and patterns of eyes are _____. A. the results of chance mutations B. reflections of the colors in the environment C. produced in anticipation of environmental forces D. created by the environmental effects on the phenotype
Answer: the correct option is B.
reflections of the colors in the environment
Explanation:
This is because the environment causes different reflections of color. Fir example white light reflect colors, it will absorb all other colors except with.
The environment serves a a medium for color reflection and this has lead to different color and patterns in population. People have eye pattern and color base on their surrondings, what the surronding is made off influence the color and patterns.