The product of chromosome duplication is
a. two chromatids.
b. two nuclei.
c. two daughter cells.
d. two spindles.
b
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According to the figure above, what is the LEAST likely explanation for the data after 1985?
A) emigration B) immigration C) introduction of new alleles into the population D) increased resources in the area
Genes located in cells in different regions of
the body during embryonic development may a. be turned on and off. b. never be turned on. c. be turned on and left on. d. be activated for only a short time in one cell and a long time in another cell. e. do all of these
The transitional fossil Archaeopteryx shows a combination of traits consistent with the hypothesis that it shared a common ancestor with ________
A) dinosaurs and bats B) hippos and whales C) reptiles and birds D) dinosaurs and birds
If the parental genotype is EeWw, what are the potential allele combinations that could occur at the end of meiosis?
a. EW, Ew, eW, and ew b. EW, EE, eW, and ww c. EE, WW, ee, and ww d. EW, Ew, ee and ww