During a specific defense, the process of increasing the numbers of the selected cells is called:a
mitotic expansion.
b. clonal selection.
c. divisional activation.
d. lymphocytic activation.
e. memory establishment.
B
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A polysome is
a. one of the units of a ribosome. b. the nuclear organelle that synthesizes RNA. c. an organelle that functions similarly to a ribosome during meiosis. d. the two units of a ribosome considered together. e. an mRNA molecule with several ribosomes attached.
Habitat fragmentation is harmful because no species are adapted to living along habitat edges
Indicate whether the statement is true or false
A year ago, Kurt lost 30 pounds quite rapidly by severely restricting his calories. Over the months following, he has regained 25 of those pounds. Kurt again cuts radically back on his calorie intake to lose the regained weight
This time, he is having more difficulty. What has happened to his body composition and his metabolism to create this difficulty?
Cinnabar eyes is a sex-linked, recessive characteristic in fruit flies. If a female having cinnabar eyes is crossed with a wild-type male, what percentage of the F1 males will have cinnabar eyes?
A) 0% B) 25% C) 50% D) 100%