14 Jun How many chromosomes would you expect to find in leaf cells
Question
Week 3 Assignment
Please thoroughly answer the following 5 questions.
By conducting testcrosses, researchers have found that the sweet pea has seven linkage groups. How many chromosomes would you expect to find in leaf cells?
Explain why inversions and reciprocal translocations do not usually cause a phenotypic effect. In a few cases, however, they do. Explain how.
A woman who is heterozygous, Bb, has brown eyes. B (brown) is a dominant allele, and b (blue) is recessive. In one of her eyes, however, there is a patch of blue color. Give three different explanations for how this might have occurred.
While conducting field studies on a chain of islands, you decide to karyotype two phenotypically identical groups of turtles, which are found on different islands. The turtles on one island have 24 chromosomes, while the turtles on another island have 48 chromosomes. How would you explain this observation? How do you think the turtles with 48 chromosomes came into being? If you mated the two types of turtles together, would you expect their offspring to be phenotypically normal? Would you expect them to be fertile? Explain.
What is a G band? Discuss how G bands are useful in the analysis of chromosome structure.
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