I think you mean sperm cell. It is called fertilization.
Answer: I
Explanation: yhyygdyucrn y
The second answer is correct . . . "stay broken up; physical and emotional health is essential".
The answer to this question is that this are all common by
being x linked. X linked inheritance means that a disorder is manifested /
located in the x chromosomes. The following are the known X linked disorders
such as color blindness, hemophilia, duchenne muscular dystrophy, menkes
disease, and others.
''An insufficient intake of folic acid—a common B vitamin—in the mother's diet is a key factor in causing spina bifida<span> and other neural tube defects.'' the answer is c
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