BIOLOGY MIDDLE SCHOOL

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Which of the following statements is true?

All mutations are harmful.
Mutations are the only way to add new genes to a gene pool.
In substitution, DNA base pairs are deleted or lost during replication.
A mutation in the liver cell of a cat will be inherited by the cat's offspring.

Answers

Answer 1

Answer: (C)
ln substitution, DNA base pairs are deleted or lost during replication

Answer 2

Answer:

Answer:

Mutations are the only way to add new genes to a gene pool.

Explanation:

Related Questions

16. Which of the following would be LEAST likely to lead to speciation? *OA flock of sparrows is blown off course to an island far from their natural habitat.A mutation arises within a population of orchids that prevents the orchids frombreeding with other populations of orchids.OA volcanic eruption creates a barrier separating two populations of rodents.A single coconut is carried to a remote island in the Pacific Ocean by water currents.
What changes in a habitat would cause a population decrease
PKU (Phenylketonuria) is an autosomal recessive disease, in which the synthesis of amino acid Tyrosine from Phenylalanine is blocked. As a result, an excess of Phenylalanine gets converted into phenylketones, which appear in the urine. In severe conditions it may also result in damage to the brain.The gene responsible for this is p, whereas the gene P is responsible for normal synthesis of Tyrosine. In a small population of Brazilian natives, the frequency of gene p, responsible for this disease, is 0.3. What must be the frequency of people who are heterozygous for this disease? ( p + q = 1, p2 + 2pq + q2 = 1) A.0.56B.0.35C.0.42
In which cell organelle is DNA kept and RNA transcribed?
The approximate composition of the atmosphere is shown in the pie-chart. Which statement BEST describes the chart? A) The chart shows the percentages of elements in a mixture. B) The chart shows the percentages of elements in a compound. C) The chart shows the percentages of pure substances in a mixture. D) The chart shows the percentages of compounds in a pure substance.

After the body has begun shivering, what explains why it would stop shivering? When body temperature returns to normal, the respiratory system sends a message to the skeletal system to stop shaking. When body temperature returns to normal, the nervous system sends a message to the muscular system to stop shaking. While body temperature is below normal, the nervous system sends a message to the skeletal system to stop shaking. While body temperature is below normal, the respiratory system sends a message to the muscular system to stop shaking.

Answers

After the body has begun shivering, it would stop shivering because when body temperature returns to normal, the nervous system sends a message to the muscular system to stop shaking. Thus, the correct option is B.

What happens during shivering?

Shivering is a remarkable thermogenic response which occurs in the homeothermic animals, including human beings, which involves the rapid, repeated skeletal muscle contractions leading to heat production through the inefficiency of ATP utilization by the body.

When the body temperature returns to normal range, the nervous system sends a message to the muscular system to stop the body shaking and shivering. While the body temperature is below normal, the nervous system sends a message to the skeletal system to stop shaking.

Therefore, the correct option is B.

Learn more about Shivering here:

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Answer:

Explanation:

When body temperature returns to normal, the nervous system sends a message to the muscular system to stop shaking.

What factors does weight depend on science

Answers

mass and gravity
you have the same mass here on earth and the moon however you weigh less on the moon

squirrels and chipmunks compete for the same food source. what is most likely to happen to the degree of competition between these 2 species if their food became scarce?

Answers

The competition will increase until the population size decreases because of the lowered carrying capacity of the environment. Then it will return to normal competition

Answer:

The correct answer would be increased in the degree of competition for the same food source.

Explanation:

Squirrels and chipmunks already share a common food source and competing for it. So, if the food became scarce there will be an increase in their competition for the food.

Squirrels and chipmunks will fight and display for the food as it is not in enough and there was already competing for the food.

Thus, the correct answer would be increased in the degree of competition for the same food source.

GIVES 30 POINTSWhich phase of cell division is shown?
1.prophase
2.metaphase
3.anaphase
4.telophase