BIO 1320 Chapter 10 Assignment

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Analyze the genotypes and phenotypes shown in the Punnett square below. Then, click on the term that describes the expression of the F gene. (Select the one correct answer.)

Incomplete dominance

How many individuals on this pedigree are definitely heterozygous (Rr)?

seven

What is the probability that the fourth child has genotype ff? (Click on the one correct answer.)

0.25

How many of the 80 offspring of this mating will be heterozygous for all three genes?

10

Approximately what percent of their children are predicted to express the disorder?

50

When a female that is heterozygous for a gene is crossed with a male that is heterozygous for a gene, what proportion of their offspring are predicted to be heterozygous for the same gene?

50

Select the correct statement about gametes.

All gametes contain unique subsets of both the father's and the mother's DNA.

Genes A, B, C, and D are on the same chromosome, meaning they are linked. The crossover frequency between the genes in each column and row are listed in the table below. Use the table to determine the order of the genes. Click on the one correct answer.

C-A-B-D

Click on the term that describes the expression of the C gene. (Select the one correct answer.)

Codominance

A normal gamete might be homozygous or heterozygous for a gene.

False

During meiosis, when are the genes on different chromosomes independently assorted? Click the correct box.

Metaphase 1 to anaphase 1

Human females have two X chromosomes in each cell. Which of the following is true of these chromosomes?

One of the chromosomes is inactivated. The process is random and results in cells that have either the mother's or the father's X chromosome active.

Analyze the image below, which shows one protein affecting three biochemical pathways. Then, click on the term that best describes how the gene encoding this protein affects the phenotypes of the individual.

Pleiotropy

What is the genotype of the male parent, and what is the genotype of the susceptible offspring? (Assume complete dominance.)

The genotype of the male parent is Rr and the genotype of the susceptible offspring is Rr.

What trait is most likely influenced by multiple genes? (Select the one correct answer.)

Trait 3

What is the most likely mode of inheritance for the trait shown in this pedigree?

Y-linked recessive


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