An allele that produces an inactive enzyme would be classified as what kind of allele?
A. Loss of function
B. Gain of function
C. Dominant
D. These do not occur and therefore there is no classification for them.
A
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The chance of a child having albinism when both of his parents are heterozygous for the disorder is ____ percent
a. 0 b. 25 c. 33 d. 50 e. 75
If one were to inject cytoplasm containing Bicoid into the middle of a Drosophila egg immediately prior to fertilization, the embryo would
A. develop normally. B. try to form posterior structures in the middle of its body. C. try to form anterior structures in the middle of its body. D. not develop at all.
Imagine that blood did not contain any dissolved proteins. What would likely happen when this abnormal blood flows through a capillary bed?
A) Nearly all of the fluid in the blood would move out of the capillaries. B) None of the fluid in the blood would move out of the capillaries. C) Some of the proteins in the interstitial fluid would flow into the capillaries. D) The blood would flow normally through the capillaries.
Why does it make sense that many fruits are green when their seeds are immature?
A) Insects, which see the color green better than mammals do, can only carry seeds when they are small (immature). B) Animals know that green fruits are tasty, and are more likely to eat them. C) Green signifies less nutritive value. D) They are green because fruits with immature seeds are still capable of photosynthesis. E) They are harder to see and thus less likely to be eaten than other fruits.