Question

Life’s Greatest Miracles Follow-along Video Notes
1. When does the human male produce his sperm?
2. Blastocyst produces…
3. Egg is fertilized in the....
4. What was the sex of the baby in the film?

Answer 1

Answer:

1. Guys start producing spermatozoa (or sperm, for short) at the onset of puberty. Puberty starts at different times for different people. Boys usually start puberty when they're around 10 or 12 years old, though some start a little sooner and others a little later.
2. The blastocyst is a structure formed in the early development of mammals. It possesses an inner cell mass (ICM) which subsequently forms the embryo. The outer layer of the blastocyst consists of cells collectively called the trophoblast. ... The trophoblast gives rise to the placenta.
3. Gives rise to: Gastrula
4. Days: 5–9
5. A pregnancy starts with fertilization, when a woman's egg joins with a man's sperm. Fertilization usually takes place in a fallopian tube that links an ovary to the uterus. If the fertilized egg successfully travels down the fallopian tube and implants in the uterus, an embryo starts growing.
6. Miracle demonstrates how the SRY gene, which is found on the Y-chromosome and is only active for a couple days during the sixth week of development, initiates a cascade of reactions that produce a male child. If the Y chromosome–and thus the SRY gene–is not present, the embryo will develop into a female.