Which of the following can produce a population of individuals with a relatively high frequency of a harmful or rare allele?

a. mutation
b. natural selection
c. the founder effect
d. artificial selection
e. migration between large populations


c

Biology & Microbiology

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In the developing embryo, what precedes the formation of a long bone?

a. cartilage b. collagen c. periosteum d. osteons e. Haversian (central) canals

Biology & Microbiology

You are a microbiologist working with a new species of bacteria thriving in soil at 15°C. In the lab, you find this bacterium adjusts well to growth at 37°C

If this bacterium were "typical," what changes would you expect to find in the fatty acid composition of the membrane as the bacteria undergo homeoviscous adaption? What will be an ideal response?

Biology & Microbiology

Adding a phosphate or sugar group to a newly made protein is an example of ________

A) a posttranscriptional modification B) a pretranscriptional modification C) an intron removal D) gene silencing E) a posttranslational modification

Biology & Microbiology

What feature do monkeys share with iguanas but not with bullfrogs?

A. thoracic breathing B. four-chambered heart C. eggs D. eyes

Biology & Microbiology