________ occur(s) at greater frequency
than ________ in microbial genomes
a. Recombination / mutations
b. Mutations / repairs
c. Insertions / deletions
d. Deletions / insertions
Answer: D
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Two populations that inhabit the same area but remain genetically distinct can best be called
A. species. B. subspecies (races). C. polymorphic. D. allopatric species. E. sympatric species.
If a hypothetical human female of genotype XX had no Barr body in any of her cells
a. she would be phenotypically male b. she would be considered triploid c. the genes on both X chromosomes would be expressed d. she would have Turner syndrome e. she would have a Y chromosome
Imagine that a new population of humans is established on a previously uninhabited planet from ten randomly selected people in your biology class. Over thousands of years, the descendants of those ten people reproduce and prosper, but they do not reflect well the diversity of humans on Earth. This reduction in genetic diversity in the establishment of the population is an example of _____
A. gene flow B. genetic drift C. the bottleneck effect D. the founder effect
Which of the following would increase a patient’s risk for thrombotic stroke?
a. Dehydration b. Anemia c. Hyperthyroidism d. Hypertension