If a single nondisjunction occurs during
anaphase II of meiosis in a normal male cell
from meiosis I, of the resulting sperm,
a. three would be normal and one would have
an extra chromosome.
b. two would be normal, one would have an
extra chromosome, and one would be
missing a chromosome.
c. two would have an extra chromosome and
two would be missing a chromosome.
d. all four sperm would have an extra
chromosome.
e. three would have an extra chromosome and
one would be normal
B
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a. Skeletons b. Shells c. Seeds d. Footprints e. Leaves
The ____ is an extension of the upper body wall in mollusks
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________ trees drop their leaves in response to decreased water availability
Fill in the blank(s) with correct word