Down syndrome is characterized by:
A) single base mutations
B) the presence of 47 chromosomes per somatic cell
C) increasing risk with younger maternal age
D) the presence of an extra chromosome 18 in each somatic cell
E) the same symptoms observed in each individual
Correct Answer:
Verified
Q14: The normal human karyotype contains _ total
Q15: Gene targeting has been used in mice
Q16: Down syndrome is an example of a
Q17: Colchicine is a drug that:
A) arrests cells
Q18: The position of a specific gene on
Q20: Comparing the human and mouse genomes has
Q21: Huntington's disease is caused by a:
A) rare
Q22: Which of the following are inborn errors
Q23: Aneuploidies describe:
A) a phenomenon that only occurs
Q24: Maternal PKU can result in serious effects
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