Exam 12: Fertilization in Utero

A mature ovum can carry only the X chromosome.

More females are conceived than males; however girls are more vulnerable than boys, such that by age 18, the genders are equally represented in the population.

__________ occurs when two germ cells fuse to become one new cell, called a zygote.

The __________ reaction is the process by which the sperm penetrates and passes through the zona pellucida to the oocyte.

At puberty, the oocyte divides into two cells, with 23 chromosomes each arranged in a doubled structure.

__________ is the process of cell division by which one diploid somatic cell produces four haploid gamete cells.

Germ cells are also called __________.

Gender is determined post fertilization.

In meiosis, the chromosomes intertwine and exchange genetic material. This exchange is responsible for __________.

Fertilization usually takes place in the outer third of the __________.

Fertilization occurs when two germ cells fuse to become one new cell, called a __________.