Some organisms are capable of asexual or sexual reproduction. Under favorable conditions, reproduction proceeds asexually. When conditions become more stressful, reproduction switches to a sexual mode. Why?
A) Sexual reproduction is simple and more rapid, allowing larger numbers of offspring to be produced.
B) Sexual reproduction produces individuals with new combinations of recombined chromosomes increasing diversity.
C) Sexual reproduction requires two separate individuals who can mutually provide nutrient support during stress.
D) Asexual reproduction requires more energy.
Correct Answer:
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Q19: Copies of chromosomes linked together at their
Q20: The process of meiosis
A) begins with diploid
Q21: Crossing over
A) involves breakages and exchanges between
Q22: If a mammal is born without the
Q23: Which of the following distinguishes prophase 1
Q25: Sexual reproduction allows for
A) clones of parent
Q26: The sex-determining chromosomes of a human male
Q27: Meiotic cell division in animals occurs in
Q28: During meiosis II
A) sister chromatids of each
Q29: A photograph of all the stained, prepared
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