Chapter 14 Review: 19629/5025122

Punnett square practice
Pedigree practice
Assume complete dominance. The cross at right indicates the individual with orange eyes is
1. heterozygous. (wrong)
2. homozygous recessive. <==== correct
3. homozygous dominant. (wrong)
4. codominant. (wrong)
5. incompletely dominant. (wrong)
  (Why? )
If the two alleles at a locus differ, the organism is ________, and the ________ allele determines the organism's ________.
1. heterozygous, dominant, genotype. (wrong)
2. homozygous, dominant, phenotype. (wrong)
3. homozygous, recessive, phenotype. (wrong)
4. homozygous, dominant, phenotype. (wrong)
5. heterozygous, dominant, phenotype. <==== correct
  Hint
Alternative versions of genes are called
1. alleles. <==== correct
2. chromosomes. (wrong)
3. chromatids. (wrong)
4. gametes. (wrong)
5. phenotypes. (wrong)
  Hint
A cross of heterozygous individuals that produces a 1:2:1 ratio in the offspring for both genotype and phenotype demonstrates
1. complete recessiveness. (wrong)
2. complete dominance. (wrong)
3. incomplete dominance. <==== correct
4. codominance. (wrong)
5. heterodominance. (wrong)
  Hint
A heterozygous individual who does not exhibit the recessive phenotype is called a(n)
1. aneuploid. (wrong)
2. carrier. <==== correct
3. dominant. (wrong)
4. dihybrid. (wrong)
5. truebred. (wrong)
  Hint
In the law of segregation, the two alleles for a heritable character end up in different
1. chromosomes. (wrong)
2. chromatids. (wrong)
3. gametes. <==== correct
4. somatic cells. (wrong)
5. pedigrees. (wrong)
  Hint
A testcross of a purple-flowered pea with a white-flowered pea yields 3 white and 1 purple offspring. The genotype of the purple parent is
1. homozygous purple. (wrong)
2. homozygous white. (wrong)
3. homozygous purple or white. (wrong)
4. heterozygous. <==== correct
5. impossible; offspring should be 1:1. (wrong)
  Hint