Discussion 2 Fall 2010

Discussion 2 Fall 2010 - Genetics(BIO 325 Fall 2010...

Info iconThis preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon
Genetics (BIO 325) Fall 2010 Discussion 2 _______________________________________________________________________ _ 1. Alligators have 32 chromosomes in somatic cells. (a) How many homologous pairs of chromosomes does an alligator have? (b) How many chromosomes are there in a haploid set? (c) How many chromosomes are present in a somatic cell just after mitosis? (d) How many double-stranded DNA molecules are there in a somatic cell just before mitosis? 2. Consider the following cross: A/a;B/b;C/c;D/d;E/e x a/a;B/b;C/C;d/d;E/E If there is complete dominance for each of the genes, (a) What proportion of the offspring will show the dominant phenotype for each gene? (b) What proportion of the offspring will be heterozygous at each locus? 3. A female fruit fly with a yellow body is discovered in a wild-type culture. The female is crossed with a wild-type male. In the F 1 generation, the males are yellow-bodied and the females are wild-type. When the F 1 flies are crossed among themselves, the F 2 produced are both yellow-bodied and wild-type, equally split among males and females. Explain the pattern of inheritance of this trait and show the genotypes of the parents, the F 1 , and the F
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
Image of page 2
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}

Page1 / 5

Discussion 2 Fall 2010 - Genetics(BIO 325 Fall 2010...

This preview shows document pages 1 - 2. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online