A maternal effect, or maternal influence, occurs when the offspring's phenotype is under the control of the mother's nuclear gene products that are present in the egg
Indicate whether the statement is true or false
TRUE
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Four of the five answers below are correct statements about exoskeletons. Select the exception
a. an exoskeleton consists of noncellular secreted material. b. repeatedly producing new exoskeleton uses resources that the animal could put towards growth and reproduction. c. the exoskeleton is made of bone and cartilage. d. the exoskeleton protects the soft body tissues inside it. e. exoskeletons exist in some invertebrates.
Homeotic genes generally control
a. X chromosome inactivation. b. formation of specific body parts c. hormone synthesis. d. dosage compensation. e. none of these.
Which two scientists evidenced evolution via natural selection as an idea whose time had come?
a. Darwin and Wallace b. Darwin and Lamarck c. Darwin and Malthus d. Lamarck and Wallace
Is it possible for a man to be sterile and still produce semen? Explain
What will be an ideal response?