Incomplete dominance:
A: is the same as codominance.
B: involves the distinct expression of both alleles, as in the ABO blood group system.
C: occurs only in X-linked genes.
D: results in a phenotypic ratio of 1;2;1 in a monohybrid cross.
E: results in a phentoypic ratio of 1:1 in a monohybrid cross.
Answer: D: results in a phenotypic ratio of 1;2;1 in a monohybrid cross.
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Which of the following statements best describes ATP?
A. ATP is formed when energy is released during photosynthesis. B. When ADP + P becomes ATP, the amount of energy released is enough for a biological purpose. C. ADP is extremely high in potential energy. D. ATP is comprised of a sugar, base, and three phosphate groups.
When comparing the gene coding for cytochrome c in several species, it was noted that humans and
chimpanzees share the identical amino acid sequence with a change in only one location. This means that a. humans and chimpanzees can mate and produce viable offspring. b. humans evolved from chimpanzees. c. over time, chimpanzees will eventually evolve into primitive humans. d. humans and chimpanzees are closely related in evolutionary time. e. there is nothing particularly informative about this discovery.
Which technique can be used to detect mutated genes?
a. DNA probes b. biopsy c. x-rays d. MRI e. radioactive monoclonal antibodies
After ovulation, the ovum remains fertile for about __________
a. 1 hour b. 6 hours c. 24 hours d. 2 days e. 3 days