Biology (Raven), 10th Edition

Chapter 12: Patterns of Inheritance

Pre-Test

1
The notations P and p (or any upper-case and lower-case letters) in genetics problems represent the
A)phenotype of an individual.
B)mutant type and the wild type respectively.
C)separate genes.
D)individual alleles.
E)chromosome mutations.
2
Which of these indicates a recessive allele?
A)capital letters
B)lowercase letters
C)italicized letters
D)letters in parentheses
E)numbers
3
In which of these genotypes would the recessive phenotype be expressed? Assume Mendelian simple dominance.
A)AA
B)aa
C)Bb
D)AB
E)Both AA and aa are correct.
4
Word descriptions such as "black" and "short-haired" represent
A)phenotype only.
B)genotype only.
C)both phenotype and genotype.
D)neither phenotype nor genotype.
E)dominance vs. recessive.
5
The probability of obtaining a dominant phenotype from self-fertilization of a heterozygous individual is
A)0%
B)1/4
C)1/2
D)3/4
E)100%
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