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You are maintaining a small population of fruit flies in the laboratory by transferring the flies to a new culture bottle after each generation. After several generations, you notice that the viability of the flies has decreased greatly. Recognizing that small population size is likely to be linked to decreased viability, the best way to reverse this trend is to ________.
(A) cross your flies with flies from another lab (B) reduce the number of flies that you transfer at each generation (C) transfer only the largest flies (D) change the temperature at which you rear the flies

Respuesta :

The correct option is (A)  Cross your flies with flies from another lab.

In cross-fertilization, traits from two different individuals are fused.

Why is cross-fertilization important?

  • Allogamy, or cross-fertilization, is the union of gametes (sex cells) from male and female individuals of the same species.
  • Cross-fertilization contributes to the preservation of a wider range of genetic variety for natural selection to work upon, enhancing a species' ability to adapt to environmental change.
  • The children of self-fertilization do not differ from one another. Cross-fertilization broadens the range of the progeny.
  • Repeated self-fertilization allows for the expression of undesirable recessive characteristics in the progeny.

Learn more about the Cross-fertilization with the help of the given link:

https://brainly.com/question/13241793

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