AP Biologymediummcq1 pt
A man with an X-linked recessive trait passes the allele to
A.all of his daughters and none of his sons
B.all of his sons and none of his daughters
C.all children equally
D.no children
Explanation
Core Concept
A father gives his Y chromosome to every son and his X chromosome to every daughter. Therefore an affected father with an X-linked allele transmits that allele to all daughters and no sons. Whether a daughter is merely a carrier or is affected depends on the inheritance pattern and on what allele she receives from her mother.
Correct Answer
Aall of his daughters and none of his sons
More Unit 5: Heredity practice questions
- mediumSickle-cell heterozygotes are generally asymptomatic under ordinary conditions and have increased resistance to severe malaria. The persiste…
- easyA homozygous recessive mother and a heterozygous father have a child. What is the chance the child shows the recessive phenotype?
- mediumHow many possible gamete types can an AaBbCc individual produce (unlinked genes)?
- hardWhich process is the same in mitosis and meiosis II?
- easySomatic cells in a human have 46 chromosomes; gametes have 23. Which division explains this?
Practice more AP Biology questions with full explanations
Practice Unit 5: Heredity Questions →