Source: Adapted from C

Multiple Choice

Source: Adapted from C. A. Huether et al., Maternal age specific risk rate estimates for Down syndrome among live births in whites and other races from Ohio and Metropolitan Atlanta, 1970-1989, Journal of Medical Genetics 35: 482-90 (1998) . Figure 8.20B Maternal age and incidence of Down syndrome
-You are studying chromosomal movement in a frog species whose haploid number is 3. What will you see in meiosis I prophase of this cell?

A) three chromosomes, each made up of sister chromatids (double-stranded)
B) six chromosomes, each made up of sister chromatids (double-stranded)
C) three chromosomes, each single-stranded (unduplicated)