Question 1
Assume that the somatic cells of a male contain one pair of homologous chromosomes (e.g., A
aA
b) and an additional chromosome without a homolog (e.g., W). Which chromosomal combinations would be expected in the meiotic products (spermatids) of a single primary spermatocyte? (There may be more than one answer.)
Question 2
The accompanying sketch depicts a cell from an organism in which 2
n = 2 and each chromosome is metacentric.
(a) Circle the correct stage for the cell in this sketch:
anaphase of mitosis
anaphase of meiosis I
anaphase of meiosis II
telophase of mitosis
(b) Given that each G1 nucleus from this organism contains 16 picograms of DNA, how many picograms of chromosomal DNA would you expect in the cell shown here?