BIOLOGY CHAPTER 11 CRITICAL THINKING ANSWERS

The dominant allele for rough coat is represented by capital R and the recessive allele for smooth coat is represented by letter r. When a heterozygous guinea pig Rr is crossed with a homozygous guinea pig aa , the possible genotype of the offspring includes Rr and rr. If the allele for white wool A is dominant over the allele for black wool a , the genotype of a white ram could be a homozygous AA or a heterozygous Aa. In winter, their feathers would turn white so they can be camouflaged with the snow. The way a gene is expressed can be affected by environmental factors such as temperature, light, food, drugs, or toxins. Ptarmigans change their feather color when seasons change in order for them to blend into their surroundings and to hide from their predators.

When a heterozygous guinea pig Rr is crossed with a homozygous guinea pig aa , the possible genotype of the offspring includes Rr and rr. The way a gene is expressed can be affected by environmental factors such as temperature, light, food, drugs, or toxins. This trait is formed due to an interplay of both genetics and environment. When two heterozygous parents Aa are crossed, the possible genotypes of their offspring are AA, Aa, Aa, and aa. There was an error saving. Ptarmigans change their feather color when seasons change in order for them to blend into their surroundings and to hide from their predators. This set of genotypes best fits the litter of eight puppies, which consists of six puppies with short hair and two puppies with long hair.

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Ptarmigans change their feather color when seasons change in order for them to blend into their surroundings and to hide from their predators. There was an error saving. Please reload the page.

In this case, the two genes that would usually assort independently bioloyg the ones that are far from each other. Therefore, the variation in the F2 generation would rarely happen since the genes in the chromosome are close to each other.

The way a gene is expressed can be affected by environmental factors such as temperature, light, food, drugs, or toxins.

biology chapter 11 critical thinking answers

The dominant allele for rough coat is represented by capital R and the recessive allele for smooth coat is represented by letter r. To determine the probability of an offspring having a particular genotype, we can use a Punnett square diagram.

biology chapter 11 critical thinking answers

This set of genotypes best fits the litter of eight puppies, which consists of six puppies with short hair and two puppies with long hair. However, the occurrence of nine offspring with smooth coats in the heterozygous Rr and homozygous rr parents indicates that the recombination frequency of chromosomes in this crossover is low.

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During spring, they shed their feathers and grow new ones in either brown or gold color which lasts critjcal the end of summer. When a heterozygous guinea pig Rr is crossed with a homozygous guinea pig aathe possible genotype of the offspring includes Rr and rr.

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If two genes on the same chromosome are close together, the recombination is low; hence, the crossover would rarely happen. Chaptre the autumn comes, their feathers would fade to grayish brown.

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In winter, their feathers would turn white so they can be camouflaged with the snow. On the other hand, recombination frequency is high if the genes are distant from each other.

Bbiology two heterozygous parents Aa are crossed, the possible genotypes of their offspring are AA, Aa, Aa, and aa. This trait is formed due to an interplay of both genetics and environment. If the allele for white wool A is dominant over the allele for black wool athe genotype of a white ram could be a homozygous AA or a heterozygous Aa.

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