BIOLOGY CHAPTER 11 CRITICAL THINKING ANSWERS

When two heterozygous parents Aa are crossed, the possible genotypes of their offspring are AA, Aa, Aa, and aa. 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. The way a gene is expressed can be affected by environmental factors such as temperature, light, food, drugs, or toxins. Please reload the page. If two genes on the same chromosome are close together, the recombination is low; hence, the crossover would rarely happen. During spring, they shed their feathers and grow new ones in either brown or gold color which lasts until the end of summer.

The way a gene is expressed can be affected by environmental factors such as temperature, light, food, drugs, or toxins. During spring, they shed their feathers and grow new ones in either brown or gold color which lasts until the end of summer. Therefore, the variation in the F2 generation would rarely happen since the genes in the chromosome are close to each other. If two genes on the same chromosome are close together, the recombination is low; hence, the crossover would rarely happen. Please reload the page. Click to see explanation 2 answ.

This trait is formed due to an interplay of both genetics and environment. In winter, their feathers would turn white so they can be camouflaged with the snow. Ptarmigans change their feather critjcal when seasons change in order for them to blend into their surroundings and to hide from their predators.

  DTU MASTER THESIS LATEX TEMPLATE

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

Solutions to Biology (), Pg. :: Free Homework Help and Answers :: Slader

Once the autumn comes, their feathers would fade to grayish brown. There was an error saving.

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. When a heterozygous guinea pig Rr is crossed with a homozygous guinea pig aa ctitical, the possible genotype of the offspring includes Rr and rr.

Click to see explanation 2 answ. On the other hand, recombination frequency is high if the genes are distant from each other. 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

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

  UNTERSCHIED DISSERTATION UND HABILITATION

CHEAT SHEET

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.

biology chapter 11 critical thinking answers

wnswers In this case, the two genes that would usually assort independently are 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. 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.