Chapter 12 Practice

Match it! Select the correct answer from the pull down...Good luck!

Many traits, such as stem length, are controlled by multiple genes. This is called _____.

Karyotypes are better to diagnose which type of genetic defects?

Which of the following traits is controlled by the X-linked inheritance?

A couple has a child who, with respect to a specific trait, resembles neither parent. Which of the following is NOT a possible mechanism for this trait?

A man carrying the allele for Huntington's disease marries a woman who is homozygous recessive for the allele. What is the probability that their offspring will develoop Huntington's disease?

You and your colleagues are constructing a pedigree for a patient with cystic fibrosis. The individual's brother has also been diagnosed with cystic fibrosis. How would this brother be represented in the pedigree?

A newly discovered disease is caused by an extremely rare allele of a gene on the X chromosome. The disease is 100% lethal. A female carrier of the allele decides to have children. What percentage of female embryos will die from this disease?

A chart of an individual's chromosome pair is called a karyotype. Analysis of a karyotype can reveal which of the following?