Which of the following statements is true about the sex chromosome - ProProfs Discuss
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Which of the following statements is true about the sex chromosome code for a male offspring?



A. If the offspring has two Y chromosomes, it will be a male.
B. If the offspring has one X chromosome, and one Y chromosome, it will be a male.

This question is part of SCIENCE - GRADE 9 [REVIEWE
Asked by Ericamorales, Last updated: Aug 02, 2020

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2 Answers

Markda John

Markda John

Answered Jan 01, 2018

For a human male offspring, the correct answer is that the offspring must have one X chromosome and one Y chromosome. Other species don’t necessarily follow this model, but there is always a way to tell which chromosomes code for male and which code for female. This answer will focus more on human biology than general biology, as that is the best way to answer the question.

Though all humans have at least one X chromosome, this creates an interesting issue. It means that all humans start as female, but as time goes by in the womb, the Y chromosome activates and turns the fetus male. This change comes around six weeks, and gives the baby the traits that most think of when it comes to a male baby.

 

John Smith

John Smith

Answered Jun 06, 2017

If the offspring has one X chromosome, and one Y chromosome, it will be a male.
 

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