How are gametes made?

Gametes are produced by mitosis (not meiosis) and after fertilization a diploid zygote is created. The single zygote cell never grows or divides my mitosis. It can only divide by meiosis to produce haploid cells once more, which then produce the main adult body.

How are gametes produced by meiosis?

Gametes are an organism’s reproductive cells. … During meiosis, a diploid parent cell, which has two copies of each chromosome, undergoes one round of DNA replication followed by two separate cycles of nuclear division to produce four haploid cells. These cells develop into sperm or ova.

How male gamete is formed?

Complete answer: Male gametes are formed by Generative cells. A typical anther contains four microsporangia. The microsporangia form sacs or pockets within the anther (anther sacs or pollen sacs) . … The generative cell divides mitotically to form the two male gametes.

Do males produce gametes?

The testes are the site of gamete production in males. The male gamete is called sperm. It is produced in the seminiferous tubules and testosterone is produced in the interstitial cells.

Do gametes determine gender?

Sperm cells carry either an X or Y sex chromosome. Female gametes, or eggs, however, contain only the X sex chromosome and are homogametic. The sperm cell determines the sex of an individual in this case. If a sperm cell containing an X chromosome fertilizes an egg, the resulting zygote will be XX, or female.

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Who produces more gametes males or females?

Females generally produce a few large gametes, while males typically produce astronomical numbers of tiny gametes. 2) Investment. The disparity in gamete size sets the stage for sex differences in investment throughout the entire reproductive cycle.

Is a sperm a cell?

In the human reproductive process, two kinds of sex cells, or gametes (GAH-meetz), are involved. The male gamete, or sperm, and the female gamete, the egg or ovum, meet in the female’s reproductive system.

How many gametes will be produced by the human male?

Gametes are formed through meiosis (reduction division), in which a germ cell undergoes two fissions, resulting in the production of four gametes. During fertilization, male and female gametes fuse, producing a diploid (i.e., containing paired chromosomes) zygote.

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