How do mammals, including humans, solve the 'dosage problem' caused by the presence of an X and Y chromosome in one sex and two X chromosomes in the other sex?

Video transcript

Hey everyone. Let's take a look at this question together. One of the two X chromosomes in female cells is silent. In mammals. This is referred to as what So we know that in mammals we have males and females and we know the males are represented by X. Y. And the females are represented by two X chromosomes. And so we can see between males and females. They share one X chromosome. However, males have A Y. And females have another X. In order to balance this out because the males only have one X chromosome and females have two gene expression is equalized by the process of inactivating one of the two female X chromosomes. And so this is a mechanism that was developed over time to try to create some balance between the males and the females in terms of gene expression. And so this mechanism is a type of dosage compensation which is answer Choice B. The correct answer because we know that one of the two X chromosomes in the female cells is inactivated, making it silent because gene expression gets equalized by that inactivation of one of the two X chromosomes in females. To create that balance between the males and females. And that mechanism is a type of dosage compensation. Answer choice B. The correct answer, I hope you found this video to be helpful. Thank you and goodbye