Question

unit 3 | genetics part b quiz 2
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in an unstable environment where growing conditions are constantly changing, which mode of reproduction in plants provides the best chance for survival, and why?
sexual reproduction; it increases the chance of survival by producing many genetically identical offspring.
asexual reproduction; it increases the chance of survival by introducing little genetic variation in offspring.
sexual reproduction; it increases the chance of survival by introducing genetic variation in offspring.
asexual reproduction; it increases the chance of survival by producing many genetically different offspring.

Explanation:

In an unstable environment, genetic variation helps plants adapt. Sexual reproduction involves genetic recombination (from gamete fusion and meiosis), creating genetically different offspring. This variation increases the chance some offspring will have traits suited to changing conditions, boosting survival. Asexual reproduction produces identical offspring, which is bad in unstable environments as they may all be ill - adapted. Option A (sexual reproduction with identical offspring) is incorrect because identical offspring have less ability to adapt to change. Option B (asexual reproduction with little variation) is wrong as little variation is not helpful in change. Option D (asexual with many different offspring) is incorrect because asexual reproduction does not produce genetically different offspring. So sexual reproduction (option C) is correct as it introduces genetic variation to enhance survival in a changing environment.

Answer:

C. Sexual reproduction; it increases the chance of survival by introducing genetic variation in offspring.