Chapter 11

The ______ of chromosomes in a cell are compared to construct karyotypes. a. length and shape b. centromere location c. gene sequence d. both a and b

The _____ determines sex in humans. a. \(X\) chromosome b. Dll gene c. SRY gene d. both a and c

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

Expansion mutations occur _______ within and between genes in human chromosomes. a. only rarely b. frequently c. not at all d. only in multiples of ten

Galactosemia is a case of ______ inheritance. a. autosomal dominant b. autosomal recessive c. \(X\) -linked dominant d. \(X\)-linked recessive

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

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

A(an) _____ can alter chromosome structure. a. deletion b. duplication c. inversion d. translocation e. all of the above

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

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.

The karyotype for Klinefelter syndrome is _____. a. \(X O\) b. \(X X X\) c. \(X X Y\) d. \(X Y Y\)

A recognized set of symptoms that characterize a specific disorder _______. a. syndrome b. disease c. pedigree

Match the chromosome terms appropriately. _____polyploidy _____deletion _____aneuploidy _____translocation _____karyotype _____nondisjunction during meiosis a. number and defining features of an individual's metaphase chromosomes b. segment of a chromosome moves to a nonhomologous chromosome c. extra sets of chromosomes d. gametes with the wrong chromosome number e. a chromosome segment lost f. one extra chromosome