Reference no: EM133984723

Assignment:

Answer every question in 2-3 sentences.

Question one:

a-): How Mendel's laws (independent assortment and segregation) relate to chromosome movements

b-): What is meant by linkage (linked genes)? Understand how linkage interferes with independent assortment of genes?

c-): If Mendel had looked at a pair of linked genes when doing a dihybrid cross, how would his results in the F2 have differed? Why?

Question two:

a-): In the offspring what is the meaning of parental types recombinant types?

b-): What is a Barr body? Consequences for X-linked gene expression in females? Example of calico cat

c-): Describe/understand the inheritance of an X-linked gene such as that for color-blindness (use correct notation, including X and Y chromosomes, when showing sex-linked genes)

Question three:

a-): Explain why a recessive X-linked gene, if present, is always expressed (phenotypically) in human males.

b-): How exclusive maternal and paternal lineages can be traced through Y chromosome / mitochondrial DNA

c-): What is meant by epigenetics? Example we discussed (imprinting)?

d-): Why mitochondrial and chloroplast genes are only inherited through the 'mother' or 'maternal plant'?