Chromosomes that look alike and carry the same sequence of genes for the same traits, such as these shown from two parents, are
A. homologous chromosomes.
B. the X and Y chromosome.
C. found in females only.
D. found in males only.
E. all the autosomes.
A. homologous chromosomes.
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Phosphorylation of ________ regulates which direction a flagellum rotates, thus controlling whether an organism runs or tumbles
A) CheAW B) CheB C) CheY D) CheZ
First division nondisjunction will yield a gamete with an extra chromosome, whereas second division nondisjunction will yield a gamete missing a chromosome
A. true B. false
What part of the neuron is responsible for most of the "house-keeping" tasks of the cell, including protein synthesis?
A. myelin B. axon C. dendrite D. soma E. synapse
Early blood cells and germ cells that become gametes arise from the
a. allantois. b. amnion. c. chorion. d. umbilical cord. e. yolk sac.