Question

JASOOHDY24 5. The baby's sex is determined at conception by... a. A chromosome contributed by the mother b. A chromosome contributed by the father c. The gender ratio of the mother's siblings d. The gender ratio of the father's siblings BOAT GEVIOVIMU 9m te

Answer 1

5)

b. A chromosome contributed by the father.

In humans and other Mammals, the baby's sex is determined by the presence of either X or Y chromosome. Males have one X and one Y chromosome and females have two X chromosomes. The gender of the baby is determined by which chromosome is carried by the Sperm that fertilizes the egg. If a sperm carries an X chromosome, the Zygote develops into a female and if the sperm carries a Y chromosome the Zygote develops into a male.

6)

a. Zygote, Embryo, Fetus, Neonate

The cell formed by the fusion of the Egg and the Sperm cells is known as the Zygote, which develops into the Embryo, which produces the Fetus. The Fetus develops and the newly born child is known as a Neonate.

7)

a. First two weeks following fertilization

The first two weeks following fertilization are known as the Germinal period, which is followed by Gastrulation and Neurulation to produce the Fetus.

8)

d. Fetal

This is the stage where organs like the heart, lungs, digestive system develop to a level where they can function outside the womb, without the support of the mother's body. The fetal stage lasts from the second to the third trimester.