BIOLOGY CHAPTER 11 CRITICAL THINKING ANSWERS

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. 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 two genes on the same chromosome are close together, the recombination is low; hence, the crossover would rarely happen. Ptarmigans change their feather color when seasons change in order for them to blend into their surroundings and to hide from their predators. Therefore, the variation in the F2 generation would rarely happen since the genes in the chromosome are close to each other. There was an error saving.

Click to see explanation 2 answ. 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. If two genes on the same chromosome are close together, the recombination is low; hence, the crossover would rarely happen. The way a gene is expressed can be affected by environmental factors such as temperature, light, food, drugs, or toxins. Please reload the page. 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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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.

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

answeds Please reload the page. This trait is formed due to an interplay of both genetics and environment. 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.

biology chapter 11 critical thinking answers

To determine the probability of an offspring having a particular genotype, we can use a Punnett square diagram. When a heterozygous guinea pig Rr is crossed with a homozygous guinea pig aathe possible genotype of the offspring includes Rr and rr.

During spring, they shed their feathers and grow new ones in either brown or gold color which lasts until the end of summer. Click to see explanation 2 answ. If two genes on the same chromosome are close together, the recombination is low; hence, the crossover would rarely happen.

In this case, the two genes that would usually assort independently are the ones that are far from each other.

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The dominant allele for rough coat is represented by capital R and the recessive allele for smooth coat is represented by letter r. When two heterozygous parents Aa are crossed, the possible genotypes of their offspring are AA, Aa, Aa, and aa.

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biology chapter 11 critical thinking answers

On the other hand, recombination frequency is high if the genes are distant from each other. If the allele for white wool A is blology over the allele for black wool athe genotype of a white ram could be a homozygous AA or a heterozygous 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 critica, predators.

The way a gene is expressed can be affected by environmental factors such as temperature, light, food, drugs, or toxins. Therefore, the variation in the F2 generation would rarely happen since the genes in the chromosome are close to each other.

biology chapter 11 critical thinking answers

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