Question

sexual & asexual reproduction: mutations
use the diagrams on the previous side to answer these questions

1. which type of reproduction causes mutations to accumulate over time?
2. explain how sexual reproduction can remove harmful/deleterious mutations from the population.
3. why do individuals that reproduce only asexually always pass on these mutations to their offspring?

Explanation:

1. Asexual reproduction causes mutations to accumulate over time because there is no genetic recombination to mix up genes. In asexual reproduction, offspring are genetically identical to the parent, so any mutations present in the parent are passed on directly to the offspring without being masked or recombined.
2. Sexual reproduction can remove harmful mutations through processes like genetic recombination and natural selection. During meiosis, crossing - over occurs, which shuffles genes. If a harmful mutation is linked to other genes, it may be separated during recombination. Also, individuals with harmful mutations may be less likely to survive and reproduce, reducing the frequency of the harmful mutation in the population through natural selection.
3. Individuals that reproduce only asexually always pass on mutations to their offspring because there is no genetic contribution from another individual to potentially mask or correct the mutation. The offspring inherit the exact genetic material of the parent, including any mutations.

Answer:

1. Asexual reproduction.
2. Through genetic recombination and natural selection.
3. Because there is no genetic contribution from another individual to mask or correct the mutation.