Which gamete genotypes are expected to contribute to viable offspring when an individual is heterozygous for a paracentric inversion and crossing-over occurs as shown in the diagram? (The ? symbol represents a centromere.) (Select all that apply.)
A) ? A B C D E
B) ? a d c b e
C) e b c D E
D) ? A B C d e
E) A B C ? d a
F) e b c ? D E
G) A B C ? D E
H) a d ? c b e
J) ? A B C d a ?
A) ? A B C D E
B) ? a d c b e
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Answer the question using the accompanying figure. The structure labeled "7" is the ____
a. food vacuole b. gullet c. macronucleus d. micronucleus e. mitochondrion
When a ruminant "chews his cud," it involves regurgitation from which two digestive chambers?
a. abomasum and omasum b. abomasum and rumen c. omasum and rumen d. rumen and reticulum e. reticulum and omasum
Each of the following is part of the systemic circuit EXCEPT the
A) aorta. B) left ventricle. C) aortic semilunar valve. D) pulmonary arteries. E) superior vena cava.
Teosinte is a wild grass in Mexico from which corn (maize) was originally domesticated. How might corn that is grown commercially compare to teosinte?
A) Corn is less genetically diverse than teosinte. B) Corn is more genetically diverse than teosinte. C) Corn is a threat to teosinte populations. D) Corn is about as genetically diverse as teosinte.