The sex of a baby is determined by whether
A) the X and Y chromosomes separate into sperm cells or ovum.
B) an X-bearing or a Y-bearing sperm fertilizes the ovum.
C) the sperm fertilizes an X-bearing or a Y-bearing egg.
D) the ovum is carrying an X chromosome or a Y chromosome.
Correct Answer:
Verified
Q21: Dizygotic twins
A)have the same genetic makeup.
B)develop more
Q22: If the alleles from both parents _,the
Q23: _ are the most common type of
Q24: Of matching pairs of chromosomes,22 of 23
Q25: In incomplete dominance,
A)both alleles are expressed,resulting in
Q27: Carriers of the sickle cell gene
A)often do
Q29: Fragile X syndrome is
A)expressed only when it
Q30: Taylor's 23rd pair of chromosomes is XY.Taylor
A)is
Q31: Somatic mutation
A)increases with age.
B)decreases with age.
C)shows that
Q54: Most chromosomal defects result from _.
A) X-linked
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