In the fruit fly, vestigial wings and h produced by two recessive genes le different chromosomes. The norm wings and hairless body, are domir vostigial win ged hairy malo ic crece
In the fruit fly, vestigial wings and h produced by two recessive genes le different chromosomes. The norm wings and hairless body, are domir vostigial win ged hairy malo ic crece
Biology: The Unity and Diversity of Life (MindTap Course List)
15th Edition
ISBN:9781337408332
Author:Cecie Starr, Ralph Taggart, Christine Evers, Lisa Starr
Publisher:Cecie Starr, Ralph Taggart, Christine Evers, Lisa Starr
Chapter14: Chromosomes And Human Inheritance
Section: Chapter Questions
Problem 5GP: Human females have two X chromosomes (XX); males have one X and one Y chromosome (XY). a. With...
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Transcribed Image Text:11:52
In the fruit fly, vestigial wings and hairy body are
produced by two recessive genes located on
different chromosomes. The normal alleles, long
wings and hairless body, are dominant. Suppose a
vestigial-winged hairy male is crossed with a
homozygous normal female. What types of progeny
would be expected? If the F1 generation from this
cross are permitted to mate randomly among
themselves, what progeny would be expected in the
F2? Show complete genotypes, phenotypes and
ratios for each generation.
7.
Other problems: How do you know the genotype of
organisms with a dominant phenotype? Is it homozygous or
heterozygous?
A pea plant exhibits a purple color, but you are
unsure of its genotype. With what could you cross
this plant to determine its genotype? Show all of
8.
your work for the cross.
What is this type of cross called?
Incomplete dominance: Genes code for the production of
specific proteins, many of which are enzymes. Different
alleles at a locus code for alternative forms of a protein that
differ in structure and when the protein is an enzyme, often
have different degrees of catalytic activity. Therefore, a
heterozygote genotvne produces an intermediate phenotype.
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