Fertilization and Cleavage Division in Reproduction

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Where does fertilization take place?

In the ovary

In the cervix

In the lateral third of the Fallopian tube (correct)

In the uterus

How soon after fertilization does the two-cell stage appear?

40 hours

30 hours (correct)

50 hours

20 hours

What is the main result of fertilization?

Restoration of the diploid number of chromosomes

Determination of the sex of the embryo

Cleavage division starts

All of the above (correct)

Which cells in the morula will form the tissues of the embryo?

The cells at the inner cell mass Signup and view all the answers

What is the purpose of the trophoblast cells in the morula?

To form the placenta Signup and view all the answers

How many cell stages are mentioned in the passage?

4 Signup and view all the answers

Which hormone is primarily responsible for the production of milk after childbirth?

Prolactin Signup and view all the answers

What is the role of oxytocin in lactation?

Causes contraction of the myoepithelial cells and milk ejection Signup and view all the answers

What triggers the release of prolactin and oxytocin during breastfeeding?

Stimulation of the nipples associated with suckling Signup and view all the answers

What happens to milk production when breastfeeding is discontinued?

It declines rapidly Signup and view all the answers

Which hormone is responsible for the developmental changes in the breasts that prepare them for lactation?

Estrogen and progesterone Signup and view all the answers

Fertilization and Cleavage Division in Reproduction

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Questions and Answers

Where does fertilization take place?

How soon after fertilization does the two-cell stage appear?

What is the main result of fertilization?

Which cells in the morula will form the tissues of the embryo?

What is the purpose of the trophoblast cells in the morula?

How many cell stages are mentioned in the passage?

Which hormone is primarily responsible for the production of milk after childbirth?

What is the role of oxytocin in lactation?

What triggers the release of prolactin and oxytocin during breastfeeding?

What happens to milk production when breastfeeding is discontinued?

Which hormone is responsible for the developmental changes in the breasts that prepare them for lactation?

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