If a woman who is a carrier for hemophilia (sex-linked recessive disorder) marries a man with hemophilia, what percentage of offspring would be affected by this condition?

a. 0%
b. 50%
c. 75%
d. 100%


b. 50%

Biology & Microbiology

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Taxonomists tend to use the ____ to characterize species for classification

a. morphological species concept b. biological species concept c. evolutionary species concept d. ecological species principle e. genetic species principle

Biology & Microbiology

Prions are of significance because they cause infections of

A. plants. B. prokaryotes. C. domestic animals and humans. D. fungi.

Biology & Microbiology

The speciation of cichlid fishes of the same African crater lake is an example of

a. divergence. b. parapatry. c. gene flow. d. allopatry. e. sympatry.

Biology & Microbiology

Oxygen has an atomic number of 8. This

means that oxygen has 8

a. electrons in its outer most shell. b. neutrons in its nucleus. c. protons and 8 neutrons in its nucleus. d. protons in its nucleus. e. neutrons in its outer shell.

Biology & Microbiology