Chromosomes are usually studied and photographed while they are in anaphase of mitosis

a. True
b. False


False

Biology & Microbiology

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The complementary sequence to the DNA template 5'-ATACGCT-3' is 3'-TATGCGA-5'

Indicate whether the statement is true or false.

Biology & Microbiology

Which of the following serves to end the menstrual

cycle? a. a surge in luteinizing hormone b. the secretion of human chorionic gonadotropin c. the breakdown of the corpus luteum d. a rise in the level of progesterone e. a drop in the level of gonadotropic hormones in the blood

Biology & Microbiology

Female sand crickets are known to produce two phenotypic variants: long-winged and short-winged. Moreover, these two variants have been shown to allocate different amounts of their energy budget to flight or ovary development, respectively

The development of female crickets into one or the other of these variants is due to ________. A) genetic mechanisms B) developmental mechanisms C) physiological mechanisms D) All of the above.

Biology & Microbiology

When a population evolves predator defenses, this reduces selective pressure and can lead to diversification into new species. This is called:

A. Interference competition B. Ecological release C. Ecological character displacement D. Escape-and-radiate coevolution

Biology & Microbiology