Which of the following is true about the Y chromosome?
A) All humans have a copy of the Y chromosome.
B) It passes from fathers to all of his children.
C) It is constantly changing from generation to generation.
D) It can be used to trace maternal ancestry.
E) It can be used to trace paternal ancestry.

Question

Quizplus · Accepted Answer

The Y chromosome is passed exclusively from fathers to their male offspring, which allows it to be used as a tool for tracing paternal ancestry. Therefore, option E is the correct answer. Option A is incorrect because not all humans have a Y chromosome (for example, females do not have a Y chromosome). Option B is also incorrect because the Y chromosome is only passed to male offspring. Option C is not accurate because the Y chromosome undergoes relatively little genetic recombination and is therefore relatively stable from generation to generation. Finally, option D is incorrect because the Y chromosome is inherited only from fathers and cannot be used to trace maternal ancestry.

Which of the Following Is True About the Y Chromosome