1. If the allelic composition of a gene is Aa, the genotype is said to be (homozygous, heterozygous). What is the probability of having "a" allele in gametes? 2. For a genotype of AaBb, what are the possible allele compositions in gametes? 3. What are the possible genotypes and phenotypes ("A" phenotype or "a" phenotype) in the offspring of a monohybrid cross Aa x Aa?

Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
Publisher:Elaine N. Marieb, Katja N. Hoehn
Chapter1: The Human Body: An Orientation
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Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...
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1. If the allelic composition of a gene is Aa, the genotype is said to be (homozygous,
heterozygous). What is the probability of having "a" allele in gametes?
2. For a genotype of AaBb, what are the possible allele compositions in gametes?
3. What are the possible genotypes and phenotypes ("A" phenotype or "a" phenotype) in
the offspring of a monohybrid cross Aa x Aa?
4. If the organism display a dominant phenotype for a trait ("A" phenotype), how does one
determine if the genotype is homozygous or heterozygous? Please use the Punnett
square to explain.
5. How many possible genotypes are there in the offspring of a dihybrid cross AaBb x
AaBb? What are the possible phenotypes for such a cross? What is the phenotypic
ratio for AB : Ab : aB : ab?
D Focus
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E R T Y U
Transcribed Image Text:1. If the allelic composition of a gene is Aa, the genotype is said to be (homozygous, heterozygous). What is the probability of having "a" allele in gametes? 2. For a genotype of AaBb, what are the possible allele compositions in gametes? 3. What are the possible genotypes and phenotypes ("A" phenotype or "a" phenotype) in the offspring of a monohybrid cross Aa x Aa? 4. If the organism display a dominant phenotype for a trait ("A" phenotype), how does one determine if the genotype is homozygous or heterozygous? Please use the Punnett square to explain. 5. How many possible genotypes are there in the offspring of a dihybrid cross AaBb x AaBb? What are the possible phenotypes for such a cross? What is the phenotypic ratio for AB : Ab : aB : ab? D Focus 72°F DEA F4 PrtScr Insert Hor F5 F6 F7 F8 F9 F10 F11 F12 24 & 3. 8 E R T Y U
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