A scientist tries to mate the two similar-looking fruit flies Drosophila melanogaster and Drosophila simulans. But he finds that

Question

2 years ago

9

A scientist tries to mate the two similar-looking fruit flies Drosophila melanogaster and Drosophila simulans. But he finds that

they are unable to produce viable offspring.What kind of evolutionary barrier could this be?
A) Chromosomal
B) Postzygotic
C) Physical
ANSWER QUESTION SAP

Biology

2 answers:

insens350 [35] · Answer 1 · 2022-07-23T02:31:43+03:00

insens350 [35]2 years ago

6 0

The answer is B, Post zygotic

Paul [167] · Answer 2 · 2022-07-23T04:48:02+03:00

Answer:

B) Postzygotic

Explanation:

If the offspring resulting from the crossing of the two fly species is not viable, it means that although the hybrids were produced, they do not have the biological characteristics to survive and therefore, that there is a postzygotic barrier (it occurs after the zygote has formed).

A postzygotic barrier is condition that prevents hybrids from surviving (dying) or reproducing (infertility).