객관식
The 46 chromosomes of a zygote come from __________.
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29. Heredity
Overview of Human Genetics
객관식
Which of the following statements about the human X chromosome is correct?
A
The X chromosome is only found in females.
B
The X chromosome is present in both males and females.
C
The X chromosome is responsible for determining male sex.
D
The X chromosome is the smallest human chromosome.
검증된 단계별 안내1
Understand the role of the X chromosome in human genetics. The X chromosome is one of the two sex chromosomes, the other being the Y chromosome.
Recognize that both males and females have X chromosomes. Females typically have two X chromosomes (XX), while males have one X and one Y chromosome (XY).
Clarify that the X chromosome is not responsible for determining male sex. The presence of the Y chromosome is what typically determines male sex.
Note that the X chromosome is not the smallest human chromosome. In fact, chromosome 21 is the smallest human chromosome.
Conclude that the correct statement is: 'The X chromosome is present in both males and females.'
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