Download Cell Division Reveiw and Karyotypes

A cell which has a diploid (2n) number of 6 undergoes either mitosis or meiosis. Use the pictures below to answer
questions about the stages of division for this cell. (Note: if the correct answer below is more than one letter long,
like “ae.”, mark both a AND e on your answer sheet for that question). Choices can be used more than once.
If a tall heterozygous pea plant is crossed with a short pea plant (T=tall, t=short), how many of
the offspring would be tall?
Andalusian chickens are black (BB), white (bb) or gray (Bb). The feather color in these chickens
is inherited in a manner called:
Suppose a gray Andalusian chicken is crossed with another gray. What proportion of the
offspring are NOT gray? Andalusian chickens are black (BB), white (bb) or gray (Bb).
What is the phenotypic ratio expected from a cross between a black and a gray Andalusian
chicken? Andalusian chickens are black (BB), white (bb) or gray (Bb).
Hemophilia is caused by an X linked gene in humans. The genes are H= normal and
h=hemophilia. A normal woman, who had a father that was a hemophiliac, has children by a
normal man. What is the probability that they will have a hemophiliac son (out of all their
children?)
Black fur in mice (B) is dominant to brown fur (b). Short tail (T) is dominant to long tail (t).
What proportion of the progeny of the cross BbTt and BBtt will have black fur and long tails?
What is the phenotypic ratio expected in the cross PpTt x PpTt, where P=purple flower, p=white
flower, T=tall, and t=short?
Barr Bodies