Genetic diversity

What is one way that genetic diversity can be introduced in mitosis?

Mating among offspring

Why is mating between related people result in genetic disorders.

Genetic Cross

In pigs, there are two loci which can influence skin color, genes A and B. Color ranges from roan (red) to sandy to white. Roan pigs have at least one dominant allele at both loci, sandy pigs have at least one dominant at either (but not both) loci, and white pigs have no dominant alleles. a) Researchers mate a red pig (AABB) with a white pig. What genotype and phenotype ratios are expected in the progeny from this cross? b) These progeny are then crossed to produce the next generation, which includes 48 little piglets. How many of each phenotype are expected if the genes assort independently? c) Now assume that the two genes are so tightly linked that recombination does not occur i... click for more

Hybridization

Given a plant species A with a diploid number of 10 and a plant species B with a diploid number 0f 18, describe how new polyploid species C could arise in a single generation from hybridization between A and B. Be sure to describe the process (including cell division events) and tell what the probable diploid number of C would be.

Genetic Cross

a) Cross a wildtype female with a yellow bodied male to produce an f1 offspring generation. Which allele is domonant and which is recessive. Justify your responce using your results. b) Now mate F1 individuals to produce an F2 generation. report the results and explain them. Is there evidence of sex linkage. justify your response. c) Do the reciprocal cross: Make the male wildtype and specify yellow bodied female. Report results of the F1 and F2 generations. Explain any similarities or differences between the results from "b".