Genetic drift contributes to allopatric speciation
a. true
b. false
Ans: a. true
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Abiotic factors are ________
A) living components of an ecosystem B) nonliving components of an ecosystem C) living and nonliving components of an ecosystem D) None of the above
A cell encounters a change in its environment (electrical or heat) that could be fatal. However, it is able to respond in a protective manner because this information is sent indirectly through the cell membrane to the nucleus where it stimulates the appropriate response. This is more likely a process known as
A. active transport. B. chemomodulation. C. phagocytosis. D. signal transduction.
What is a plant species in which the plant can make either only male or only female flowers called, and what flowers does it always have?
a. monoecious; imperfect b. dioecious; perfect c. dioecious; imperfect d. monoecious; perfect
If Hani has type A blood and his mother has type B blood, which of the following is the most likely genotype of Hani's father?
A) IAIA B) IBi C) ii D) IBIB