Which of these is a renewable resource?
a. biofuels
b. fossil fuels
c. oil
d. coal
e. all of the above
Answer: a. biofuels
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Which of the following characteristics made the pea plant Pisum sativum an ideal organism for Mendel's studies?
A. It has the ability to self-fertilize B. It was easy to cross-fertilize one plant with another C. It has easily identifiable traits D. All of the answers are correct
Which ratio would indicate that a phenotype is controlled by multiple genes?
A) 3:1 B) 2:1 C) 1:2:1 D) 9:3:3:1.
Phylogeny is deciphered to build phylogenetic trees using
A. the fossil record B. homology C. molecular data D. all of the choices
You are trying to improve growth in an economically important fish species. These fish have a gene that controls their size. There are two size alleles; L and S. You cross a large female (LL) with a small male (SS) and get all large fish! The genotypes of the F1 are 100% LS so you assume that large size is dominant to small. You then cross a small female (SS) with a large male (LL) and get all small fish! The genotypes of this F1 are all LS. How do you explain this result?
A. The gene for large size is a maternally inherited. B. L is dominant to S. C. The gene for large size is a sex-linked gene. D. L is not dominant to S. E. The gene for large size is a maternal effect gene and L is dominant to S.