Genetic Analysis: An Integrated Approach (3rd Edition)
Genetic Analysis: An Integrated Approach (3rd Edition)
3rd Edition
ISBN: 9780134605173
Author: Mark F. Sanders, John L. Bowman
Publisher: PEARSON
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Chapter 10, Problem 28P

A small population of deer living on an isolated island are separated for many generations from a mainland deer population. The populations retain the same number of chromosomes and but hybrids are infertile. One chromosome (shown here) has a different banding pattern in the island population than in the mainland population.

Chapter 10, Problem 28P, 10.28 A small population of deer living on an isolated island are separated for many generations

Describe how the banding pattern of the island population chromosome most likely evolved from the main-land chromosome. What term or terms describe the difference between these chromosomes?

Draw the synapsis of these homologs during prophase I in hybrids produced from the cross of mainland with island deer.

In a mainland–island hybrid deer, recombination takes place in band q1 of the homologous chromosomes. Draw the gametes that result from this event.

Suppose that 40 % of all meioses in mainland–island hybrids involve recombination somewhere in the chromosome region between q2 .1 and p2 . What proportion of the gametes of hybrid deer are viable? What is the cause of the decreased proportion of viable gametes in hybrids relative to the parental populations?

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Genetic Analysis: An Integrated Approach (3rd Edition)

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