A seed that lands in the forest soil is homozygous mutant for the CONSTANS (CO) gene, and as a result does not produce any functional CONSTANS protein. What do you predict will happen during the development of this seed?
A. It will germinate and grow vegetatively. If it is from a photoperiodic species, it will fail to produce flowers.
B. It will fail to germinate.
C. It will germinate and grow vegetatively, but will never produce flowers.
D. It will germinate and grow vegetatively, and then it will produce flowers earlier than wildtype.
Answer: A
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A couple are both heterozygous for the dominant allele for polydactyly. They want to have three children. What is the
probability that all three children will have polydactyly?
a. 3/4 b. 9/64 c. 1/64 d. 27/64 e. 1/2
Why might predators take more time to recover following a disturbance than herbivores or producers?
a. Recovery time is based on the flow of energy, so herbivores recover first, then producers, and then predators b. Recovery time is based on the flow of energy, so producers recover first, then herbivores and finally predators. c. Recovery time is based on solar cycles, and thus predators are the second group to recover. d. Predators actually recover more quickly than others because of their mobility.
According to Charles Darwin, “HOMOLOGOUS” structures are anatomically because:
a. They serve the same functions b. They are inherited from a common ancestor c. They are inherited from different ancestors d. Both a and b
Hershey and Chase tagged the DNA of viruses with radioactive phosphorus, and their protein coats with radioactive sulfur. When the viruses were allowed to infect bacteria, what did the viruses transfer to the bacteria?
A. radioactive phosphorus B. neither radioactive phosphorus nor sulfur C. radioactive phosphorus and sulfur D. radioactive sulfur