Down's syndrome is caused by:
A) alcohol abuse by the mother at the time of conception.
B) sex-linked chromosomal abnormalities.
C) an extra chromosome on the 21st pair.
D) drug abuse by the mother during pregnancy.
Correct Answer:
Verified
Q37: The field of biology that studies heredity
Q38: After meiosis, each new cell nucleus contains
Q39: According to a study in the year
Q40: According to a study in the year
Q41: Which of the following statements is true
Q43: According to a study in 2013 by
Q44: If an individual gets a recessive gene
Q45: Sickle-cell anemia is caused by:
A) a chromosomal
Q46: Rico is a man who has enlarged
Q47: Each member of a pair of genes
Unlock this Answer For Free Now!
View this answer and more for free by performing one of the following actions
Scan the QR code to install the App and get 2 free unlocks
Unlock quizzes for free by uploading documents