Because there was no previous history of hemophilia in Queen Victoria’s family, and because she transmitted the
mutant allele to a number of her children, it is reasonable to assume that ____.
a. her father was homozygous for the disorder
b. her mother was homozygous for the disorder
c. her sister was a heterozygous carrier
d. she was homozygous for the disorder
e. she was a heterozygous carrier
e
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Tetanus is highly contagious through person-to-person contact
Indicate whether the statement is true or false.
Many species of ants "farm" aphids, protecting these insects and collecting concentrated sugars known as honeydew from them. The relationship between such an ant and its aphids is known as
A. mutualism. B. defensive mutualism. C. parasitism. D. predation. E. amensalism.
Metarterioles directly link arterioles with venules
____________________ Indicate whether the statement is true or false.
Which of the following is NOT an example of parental investment?
A. A male fish holds fertilized eggs in his mouth until they hatch to protect them from predators B. A female mammal produces milk for her offspring C. A male praying mantis is eaten by a female during mating, and the proteins from his body are deposited into the eggs she produces after mating with him D. A female bird sits on a nest to incubate eggs E. A male fish guards a female after mating with her, preventing other males from mating with her F. all of these are examples of parental investment