Q6. Guinea pigs, which were homozygous for long, black hair were crossed with ones which were homozygous for short, white hair. All the F1 offspring had short, black hair. (a) Using suitable symbols, draw a genetic diagram showing parents genotypes, to explain this result in F1 offspring. (b) Complete the Punnett square to show the results of interbreeding the F1 offspring. Gametes

Human Anatomy & Physiology (11th Edition)
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Chapter1: The Human Body: An Orientation
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Q6. Guinea pigs, which were homozygous for long, black hair were crossed with ones which
were homozygous for short, white hair. All the F1 offspring had short, black hair.
(a) Using suitable symbols, draw a genetic diagram showing parents genotypes, to explain
this result in F1 offspring.
(b) Complete the Punnett square to show the results of interbreeding the F1 offspring.
Gametes
Transcribed Image Text:Q6. Guinea pigs, which were homozygous for long, black hair were crossed with ones which were homozygous for short, white hair. All the F1 offspring had short, black hair. (a) Using suitable symbols, draw a genetic diagram showing parents genotypes, to explain this result in F1 offspring. (b) Complete the Punnett square to show the results of interbreeding the F1 offspring. Gametes
(c) Complete the following table to show the differentphenotypes you would expect in the
F2 and their ratio.
Phenotype
Ratio
(d) State the ratio of phenotypes expected in the F2 offspring.
(e) Mendel's Second Law of inheritance states that, "during gamete formation the
segregation of each gene pair is independent of other pairs." How do the diagrams
above prove this law? (AC 2.4).
Transcribed Image Text:(c) Complete the following table to show the differentphenotypes you would expect in the F2 and their ratio. Phenotype Ratio (d) State the ratio of phenotypes expected in the F2 offspring. (e) Mendel's Second Law of inheritance states that, "during gamete formation the segregation of each gene pair is independent of other pairs." How do the diagrams above prove this law? (AC 2.4).
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