The _____ is analogous to the female's ovary.
A. vas deferens
B. corpus spongiosum
C. meatus
D. testis
D. testis
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Large ears is a rare trait in a mainland population of mice. A female mice homozygous for very large ears arrives at an island that already contains mice after sneaking onto a boat. This will lead to a population with a higher incidence of big ears than the mainland population because of ____
A. increased mutation. B. a bottleneck effect. C. genetic drift. D. natural selection. E. gene flow.
The primary role of the two sperm produced in the germ tube of the pollen is to
A. release proteins for germination B. aid the plant's seed production C. ensure that there will be fertilization of the egg and the two central cells D. ensure production of an embryo E. allow the endosperm to become a seed
The bond in table salt (NaCl) is
a. polar. b. ionic. c. covalent. d. double. e. nonpolar.
The entire genome of an organism is present in each of its cells, for example, in neurons, muscle cells, and skin cells in mammals.
Answer the following statement true (T) or false (F)