Chapter 14

Constructing a pedigree is 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 sexually 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 experimenting on humans c. inheritance in humans is more complicated than in other organisms d. genetic disorders occur in humans e. all of the above

3\. A recognized set of symptoms that characterize a genetic disorder is a(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 being heterozygous. a. 25 percent b. 50 percent c. 75 percent d. no chance; it will die

Is this statement true or false? A son can inherit an X-linked recessive allele from his father.

A trait that is present in a male child but not in either of his parents is characteristic of _____ inheritance. a. autosomal dominant b. autosomal recessive c. X-linked recessive d. It is not possible to answer this question without more information.

Color blindness is a case of ______ inheritance. a. autosomal dominant b. autosomal recessive c. X.linked dominant d. X.linked recessive

What do you think the pattern of inheritance of the human SRY gene is called?

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

Nondisjunction may occur during _____. a. mitosis b. meiosis c. fertilization d. both a and b

Nondisjunction can result in _____ a. polyploidy b. aneuploidy c. crossing over d. pleiotropy

Nondisjunction can occur during _____ . a. anaphase I b. telophase I c. anaphase II d. a or \(c\)

Is this statement true or false? Body cells may inherit three or more of each type of chromosome characteristic of the species, 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 _______nondisjunction _______ during meiosis a. symptoms of a genetic disorder b. segment of a chromosome moves to a nonhomologous chromosome c. extra sets of chromosomes d. results in gametes with the wrong chromosome number e. a chromosome segment lost f. one extra chromosome