Chapter 14

Constructing a family pedigree is particularly useful when studying inheritance patterns in organisms that ___________ . a. produce many offspring per generation b. produce few offspring per generation c. have a very large chromosome number d. reproduce asexually e. have a fast life cycle

Pedigree analysis is necessary when studying human inheritance patterns because ____________ . a. humans have more than 20,000 genes b. of ethical problems with human experimentation c. inheritance in humans is more complicated than in other organisms d. genetic disorders occur in humans e. all of the above

A recognized set of symptoms that characterize a genetic disorder is \(\mathrm{a}(\mathrm{n})\) ____________. a. syndrome b. disease c. abnormality

If one parent is heterozygous for a dominant allele on an autosome and the other parent does not carry the allele, any child of theirs has a _________ chance of having the associated trait. a. 25 percent b. 50 percent c. 75 percent d. no chance; it will die

Color blindness is inherited in an _________ pattern. a. autosomal dominant b. autosomal recessive c. X-linked dominant d. X-linked recessive

A female child inherits one \(\mathrm{X}\) chromosome from her mother and one from her father. What sex chromosome does a male child inherit from each of his parents?

Alleles for Tay-Sachs disease are inherited in an autosomal recessive pattern. Why would two parents with a normal phenotype have a child with Tay-Sachs? a. Both parents are homozygous for a Tay-Sachs allele. b. Both parents are heterozygous for a Tay-Sachs allele. c. A new mutation gave rise to Tay-Sachs in the child. d. \(b\) or \(c\)

The SRY gene gives rise to the male phenotype in humans (Sections 10.3 and 14.4\()\). What do you think the inheritance pattern of SRY alleles is called?

Nondisjunction may occur during __________ . a. mitosis b. meiosis b. meiosis d. both a and b

Is this statement true or false? Inheriting three or more of each type of chromosome characteristic of the species results in a condition called polyploidy.

Klinefelter syndrome \((\mathrm{XXY})\) can be easily diagnosed by __________ . a. pedigree analysis b. aneuploidy c. karyotyping d. phenotypic treatment

Match the chromosome terms appropriately. ______polyploidy _______ deletion ______ aneuploidy _______ translocation _______ syndrome _______ transposable _______ element a. symptoms of a genetic disorder b. segment of a chromosome moves to a nonhomologous chromosome c. extra sets of chromosomes d. gets around e. a chromosome segment lost \(f\) one extra chromosome