Which of the Following Statements Are True of Fertilization and Embryonic

question 7

Multiple Choice

Which of the following statements are true of fertilization and embryonic development (Select all that apply) ?

• A)Fertilization usually takes place within the body of the uterus.
• B)Implantation usually occurs 5 to 8 hours after fertilization.
• C)The zygote has the diploid number of chromosomes and begins to divide by mitosis.
• D)The first 18 weeks of human development are the embryonic phase.
• E)In fertilization,the tail of the sperm cell creates an opening in the egg cell membrane.
• F)The cells of an 8-cell embryo are still very similar to one another.
• G)The outer layer of the blastocyst will become the embryo.
• H)Cell divisions of the zygote are collectively called cleavage.

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