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Science Clinic => Biology => Topic started by: rl on Mar 26, 2020

Title: Suppose that a given gene undergoes a mutation to a dominant allele such that 2 out of 100,000 ...
Post by: rl on Mar 26, 2020

Question 1

What is the original source of genetic variation in a population? Which natural factors affect changes in this original variation?

Question 2

Suppose that a given gene undergoes a mutation to a dominant allele such that 2 out of 100,000 offspring exhibit the new mutant phenotype. Assuming that these offspring are heterozygous, what is the mutation rate for the gene?

Title: Suppose that a given gene undergoes a mutation to a dominant allele such that 2 out of 100,000 ...
Post by: mcarey591 on Mar 26, 2020

Answer 1

Mutation is the original source. Chromosomal assortment and crossing over reshuffle combinations of mutations at different loci; forces such as selection, genetic drift, and migration can increase or decrease the frequencies of mutant alleles in populations.

Answer 2

1/100,000