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. 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. The way a gene is expressed can be affected by environmental factors such as temperature, light, food, drugs, or toxins. 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 this case, the two genes that would usually assort independently are the ones that are far from each other. Once the autumn comes, their feathers would fade to grayish brown. Please reload the page.

There was an error saving. During spring, they shed their feathers and grow new ones in either brown or gold color which lasts until the end of summer. To determine the probability of an offspring having a particular genotype, we can use a Punnett square diagram. 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. If two genes on the same chromosome are close together, the recombination is low; hence, the crossover would rarely happen. Therefore, the variation in the F2 generation would rarely happen since the genes in the chromosome are close to each other. This trait is formed due to an interplay of both genetics and environment.

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Please reload the page. When chaoter heterozygous guinea pig Rr is crossed with a homozygous guinea pig aathe possible genotype of the offspring includes Rr and rr. There was an error saving. On the other hand, recombination frequency is high if the genes are distant from each other.

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In winter, their feathers would turn white so they can be camouflaged with the snow. 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.

biology chapter 11 critical thinking answers

In this case, the two genes that would usually assort independently are the ones that are far from each other. The way a gene is expressed can be affected by environmental factors such as temperature, light, food, drugs, or toxins. When two heterozygous parents Aa are crossed, the possible genotypes of their offspring are AA, Aa, Aa, and aa. Once the autumn comes, their feathers would fade to grayish brown. Ptarmigans change their feather color when seasons change in order for them to blend into their surroundings and to hide from their predators.

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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. To determine the probability of an offspring having a particular genotype, we can use a Punnett square diagram.

The dominant allele for rough biklogy is represented by capital R and the recessive allele for smooth coat is represented by letter r. This trait is formed due to an interplay of both genetics and environment.

Click to see explanation 2 answ. During spring, they shed their feathers and grow new ones in either brown or gold color which lasts until the end of summer. 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.

If two genes on the same chromosome are close together, the recombination is low; hence, the crossover would rarely happen. Therefore, the variation in the F2 generation would rarely happen since the genes in the chromosome are close to each other.