The reduced fitness in hybrids arising from genetic incompatibility could have, overtime, led to the elimination of the Neanderthal Y alleles from the H. sapien gene pool. Concept introduction: Neanderthals and human beings share a common ancestor and both have said to have been occupied closer niches. During these periods, interspecific breeding might have occurred. As a result, current day European and Asian population have Neanderthal DNA in their autosomes. Neanderthals became extinct, but human beings survived.

Question

Want to see the full answer?

Answer 1

Question

Chapter 26, Problem 3CT

Summary Introduction

To explain: The reduced fitness in hybrids arising from genetic incompatibility could have, overtime, led to the elimination of the Neanderthal Y alleles from the H. sapien gene pool.

Concept introduction: Neanderthals and human beings share a common ancestor and both have said to have been occupied closer niches. During these periods, interspecific breeding might have occurred. As a result, current day European and Asian population have Neanderthal DNA in their autosomes. Neanderthals became extinct, but human beings survived.

Expert Solution & Answer

Want to see the full answer?

Check out a sample textbook solution

See solution

Students have asked these similar questions

As pointed out in the section Evolution of the Y Chromosome, some researchers have predicted that the human Y chromosome will continue to lose genetic information in the future and will completely disappear from the species in about 10 million years. What would happen if the Y chromosome disappeared from the human species?

A scientist investigating the genome of two related individuals observes a difference of a few nucleotides in one individual compared to the other. The nucleotide differences are in a region of noncoding DNA on chromosome 1. Would these differences be considered a mutation? Why or why not? Yes, the difference in nucleotide sequences between the individuals is a mutation because it will affect the phenotype of the two individuals. Yes, any heritable variation in the nucleotide sequence is considered a mutation, even if that variation is in a noncoding region of DNA. Not enough information was provided to determine if this nucleotide difference is a mutation because the effect on phenotype is unknown. No, the change in nucleotide sequence doesn't appear in a coding region of the DNA and so can't be a mutation.

Blue eye color allele (b) is recessive to the dominant to the black eye color allele (B). When we sequence around the locus of the blue gene from 10 pure breed species and 10 black pure breed species we notice difference in dna sequence. The black eye species have short tandem repeat (STR), which is a short DNA sequence that is repeated 6 times in the species with blue eyes, and 10 times in the species with black eyes. These repeats are only 4 cM apart from the orange gene locus. You design a PC test that distinguishes between the 6 and 10 STRs by electrophoresis. Make pedigree that will let us to identify which alleles of the blue gene was the dominant and or recessive?