Which of the following does not contribute to prokaryotic genetic variability?
a. mutation
b. binary fission
c. gene transfer by conjugation
d. gene transfer by transduction
e. gene transfer by transformation
B
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The gene (IGF1) that encodes a growth hormone has one allele (IGF1-A) that is found in small dogs but not in dogs that are very large. What does this suggest about body size of small dogs?
A. Body size depends on how much growth hormone is produced during early fetal development. B. Body size depends on whether or not the IGF1-A allele is present, if it is the dog grows very large, if it is not present the dog retains a small size. C. It suggests that small dogs are small because the IGF1-A allele is expressed, perhaps inhibiting the growth of the dog and the release of growth hormone. D. It suggests that small dogs have more growth hormone released during fetal development but none released after the birthing process. E. Body size depends on nutrition, not on genetics.
All of the following are members of suborder Mysticeti, except:
a. humpback whales. b. right whales. c. orcas. d. blue whales. e. fin whales.
A population ecologist wants to estimate the
size of a robin population. In an apple orchard, she captures 10 robins, marks them, and then releases them. She returns several weeks later and captures another 10 robins of which 2 are robins she previously marked. The estimated population size of robins is
a. 50 b. 15 c. 10 d. 200 e. 20
Fungi is to fungus as is to
a. mycelium, mycelia b. hypha, hyphae c. sporangia, sporangium d. ascus, asci