39. Which of the following is true about cleavage of the zygote? a. each cells division...

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Medical Sciences

39. Which of the following is true about cleavage of the zygote?a. each cells division results in smaller cells b. the cellsresulting from cleavage are diploid (contain a maternal andpaternal set of chromosomes) c. both statements are true d. neitherstatement is true
40. Which of the following is not true about implantation? a.would normally occur about 7 days after ovulation b. would normalloccurs about 6 days after fertilization c. would normally occurabout 21 days into the mentrual cycle d. requires attachment of theblastocycst to the endometrium e. usually occurs in the uterine(Fallopian) tube
41. An ectopic pregnancy is a. when the fetus is born feet firstb. when the fetus is born prematurely c. any pregnancy resulting intwins or multiple births d. any pregnancy which lasts more than 40weeks e. development of the embryo or fetus outside the uterinecavity
42. The gestation period in humans is about a. 9 hours b. 24hours c. 48 hours d. 7 days e. 14 days f. 28 days g. none of theabove

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39 Answer C Both statements are true Zygote is formed by fertilisation of sperm and ovum Zygote is diploid cell following cleavage of zygote 2 celled stage is formed which are smaller in size and each cell have both maternal and paternal set of chromosomes 40 Answer E Usually See Answer

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