Which of the following most adequately describes how the Alu element may have proliferated to constitute 10% of the human genome?
A. Multiple retroelements code the same gene.
B. Retroelements increase with every generation.
C. A single retroelement can be copied into many RNA transcripts.
D. Retroelements increase with each cell division.
E. Retroelements show self-proliferation.
C. A single retroelement can be copied into many RNA transcripts.
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Which of the following statements support the hypothesis that the onset of puberty is related to nutritional state?
I) On average, puberty occurs at a younger age now than it did 200 years ago. II) Girls with large fat stores generally enter puberty earlier than thin girls do. III) The nutritional state of the U.S. population is much better than it was 200 years ago. A) only I and III B) only II and III C) only I and II D) only II E) I, II, and III
One function of peroxisomes involves the process of:
a. cell death. b. water storage. c. protein synthesis. d. DNA replication. e. detoxification
Which of the following vertebrates has a social structure most closely resembling social insects?
a. the phalarope b. lions c. the naked mole rats d. Siberian tigers e. chimpanzees
chronic constipation can lead to enlarged and inflamed blood vessels of the anus known as
What will be an ideal response?