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g100num [7]
3 years ago
11

Complete the sentences to describe natural selection

Biology
1 answer:
Vikentia [17]3 years ago
6 0
  1. The environment needs to change in order to natural selection to occur.

Reason:

Because, Natural selection is the differential survival and reproduction of individuals due to differences in phenotype. It is a key mechanism of evolution, the change in the heritable traits characteristic of a population over generations.

2. Population has some genetic variations.

Reason:

Genetic variation is essential for natural selection because natural selection can only increase or decrease frequency of alleles that already exist in the population. Genetic variation is caused by:

mutation and random mating between organisms

3. Nature select organism with specific traits to survive and reproduce.

Reason:

According to Charles Darwin's theory of evolution by natural selection, organisms that possess heritable traits that enable them to better adapt to their environment compared with other members of their species will be more likely to survive, reproduce, and pass more of their genes on to the next generation.

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Different variant forms of a gene are referred to as ______________
slavikrds [6]

Answer:

Alleles.

Explanation:

Gene may be defined as the functional segment of DNA that codes for the particular protein. Genes are responsible for the phenotype and genotype of the organism. Each gene may exist in multiple forms.

The variants forms of the genes are known as alleles. Alleles are the alternative form of the same gene. A single gene may have atleast two alternative form. These alternative forms together contribute the functional aspect of the organism.

Thus, the correct answer is alleles.

6 0
3 years ago
HELP WILL GIVE BRANLIEST!Can all animals regenerate? Explain.
vredina [299]

Answer:

Almost all the animals can heal wounds, but only some can regenerate. One hypothesis is that certain regeneration-specific genes are expressed exclusively in regenerative species and evolutionarily lost in nonregenerative species.

Explanation:

Good luck and have a great day!

3 0
2 years ago
How does reducing gene flow cause speciation?
jasenka [17]

A. People can Change the way that the genes flow

6 0
2 years ago
Which of the following does the enzyme carbonic anhydrase most likely do to a metabolic reaction?
kumpel [21]

Answer:

The main role of carbonic anhydrase in humans is to catalyze the conversion of carbon dioxide to carbonic acid and back again. However, it can also help with CO2 transport in the blood which in turn helps respiration. It can even function in the formation of hydrochloric acid by the stomach.

Explanation:

3 0
2 years ago
3. In what part of Australia are koalas found? What do they eat?
White raven [17]
They are found in eastern australia and they usually eat Eucalyptus
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3 years ago
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