Before the X and Y chromosomes evolved, sex was determined by ____.
A)temperature
B)chromosome number
C)the age of the parents
D)pH
E)the age of the father only

Name: Before the X and Y chromosomes evolved, sex was determined by ____. A)temperature B)chromosome number C)the age of the parents D)pH E)the age of the father only
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Question

​Before the X and Y chromosomes evolved, sex was determined by ____.
A)temperature​
B)chromosome number​
C)the age of the parents​
D)pH​
E)the age of the father only​

Quizplus · Accepted Answer

Temperature is a common mechanism for sex determination in some species, such as reptiles, before the evolution of sex chromosomes.

​Before the X and Y Chromosomes Evolved, Sex Was Determined

Before the X and Y Chromosomes Evolved, Sex Was Determined