In a large metropolitan hospital, cells from newborn bab...

Question

In a large metropolitan hospital, cells from newborn babies are collected and examined microscopically over a 5-year period. Among approximately 7500 newborn males, six have one Barr body in the nuclei of their somatic cells. All other newborn males have no Barr bodies. Among 7500 female infants, four have two Barr bodies in each nucleus, two have no Barr bodies, and the rest have one. What is the cause of the unusual number of Barr bodies in a small number of male and female infants?

Accepted Answer

Hello, everyone and welcome to today's video. So, in a mono hybrid cross between two hetero sickos tall plants. What is the expected genotype of the F one generation? What remember that since we're crossing these two hetero Zigo's tall plants, their genotype are going to be as follows. Now, all we have to do to determine the expected probability of each genotype is going to be to create a punnett square crossing the to Jenna types. If we make this grass, we obtain the following. As we can see, we have 1/4 of the offspring being homocide focus dominant for the tall phenotype. We have one half of the offspring Being Hetero Sagas. We have 1/4 of the offspring be in Homocide recessive. Now, if we look at our answer choices, the correct answer choice is going to be answer choice. B 25% are going to be homosexuals dominant, 50% are going to be hetero sagas and 25% are going to be Homo Sagas recessive. I really hope this video helped you and I hope to see you on the next one.

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