6 Questions
Which can a chromosomal map show?
the positions of genes on a chromosome
Which can result from the deletion of a single nucleotide?
frameshift mutation
Which statement best explains why men and women express the Bb genotype differently?
Pattern baldness is a sex-influenced trait
What is the phenotype of a female with the Bb genotype?
Not bald
What is the phenotype of a male with the BB genotype?
Bald
Which genotype results in a male being not bald?
bb
Study Notes
Chromosomal Maps
- A chromosomal map can show the positions of genes on a chromosome.
Consequences of Nucleotide Deletion
- Deletion of a single nucleotide can result in a frameshift mutation.
Pattern Baldness: Genotypes and Phenotypes
- The genotype BB results in baldness in both females and males.
- The genotype Bb results in baldness in males but not in females.
- The genotype bb results in no baldness in both females and males.
Sex-Influenced Traits
- Pattern baldness is an example of a sex-influenced trait, meaning that the expression of the Bb genotype differs between males and females.
Multiple choice questions on biology covering chromosomal maps, mutations, and genotypes and phenotypes.
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