Week 9 Test Answers

In peas, yellow seed color (Y) is dominant to green seed color (y). Which describes an organism that has nonidentical alleles for seed color?

Hemophilia is an X-linked recessive disorder that is passed through generations and can be traced by using a pedigree. In the pedigree that is shown, which represents Irene's allele combination?

How many genes make up the human genome?

What would most likely happen to a person who is not getting enough essential amino acids in his or her diet?

The results of Thomas Hunt Morgan’s last cross are shown in the Punnett square below. Which of Thomas Hunt Morgan's hypotheses was valid based on these results?

A purebred plant that has yellow flowers is crossed with a purebred plant that has white flowers. All the offspring have yellow flowers. Which conclusion about yellow flowers is supported by these results?

Which best matches a type of genetic material with its description?

Which type of protein will fight disease?

What was Friedrich Miescher's contribution to the discovery of the genetic code?

Which of the following correctly organizes these genetic terms in order from smallest to largest?

What would most likely happen if an error occurred when RNA was receiving coding information?

Which is released during the formation of a peptide bond?

Pedigrees are used to help geneticists understand how traits are inherited between generations. The Romanovs, a Russian royal family, had a history of hemophilia, a sex-linked disorder that is determined by a recessive allele on the X chromosome.What is the best evidence to prove that Irene was heterozygous for hemophilia?

Which allele combination represents a male who has an X-linked recessive disorder?

In peas, yellow seed color (Y) is dominant to green seed color (y). A homozygous green seed pea plant is crossed with a heterozygous yellow seed pea plant. What is the predicted phenotypic ratio of the offspring based on seed color?

Round seeds and yellow seed color are dominant to wrinkled seeds and green seed color. What is the probability of having offspring that have wrinkled seeds and yellow seed color for the cross RRYY ´ RrYy?

Duchenne muscular dystrophy is an X-linked recessive disorder. What is the probability that a female offspring of the cross that is shown above would have a recessive allele for Duchenne muscular dystrophy disorder?

What effect has breast cancer research had on society?

Which statement about inheritance is true?

What is genotype for a recessive trait found on the female chromosome?