Cell Reproduction Study Guide

the reproduction of cells in which they divide into two new cells with the same number of chromosomes and the exact same DNA.

Mitosis starts with _______ chromosomes

Mitosis ends with 2 new cells with ______chromosomes

List the first stage of mitosis

List the second stage of mitosis

List the third stage of mitosis

List the fourth stage of mitosis

the time when cells are growing and developing, but not reproducing

thread like fibers which chromosomes attach

point where spindle fibers attach

half of a chromosome

center of a chromosome where 2 chromosomes attach

2 chromatids joined together

there are 46 chromosomes in every ____ cell

there are 23 chromosomes in every ___ cell

In ____ of mitosis, 46 chromosomes become present, the nuclear membrane disappears, the centrioles move to the poles and spindle fiber form

In ____ of mitosis, 46 chromosomes line up in the middle of the celll and attach to the spindle fibers

In ____ of mitosis, 46 chromosomes tear apart into 46 chromatids. 46 chromatids go one way, and 46 chromatids go the other way

In ____ of mitosis, the cell tears into two cells, the centrioles and spindle fibers disappear, the chromatids return to chromatin, the nuclear membrane reforms

during ____ no chromosomes are present, only chromatin, and the body cell grows and develops. But it is NOT reproducing!

the division of sex cells. It results in 4 new cells with half the number of chromosomes and different DNA.

Gametes are ____ cells

Sex cells have ____ chromosomes in each cell

What forms when a sperm and an egg unite during fertiliztion

The zygote has ___ chromosomes

when the offspring has half the number of chromosomes as the parent

when the offspring has the same number of chromosomes as the parent

the diploid number for 46 is ____

the haploid number for 46 is ___

In _____ of meiosis, 23 chromosome pairs become visible, centrioles and spindle fibers form and the nuclear membrane disappears

In _____ of meiosis, the 23 pairs of chromosomes line up in the middle at the equator

In ____ of meiosis, the 23 chromosome pairs split into 23 individual chromosomes…23 go one way and 23 go the other way

In ____ of meiosis, the cell tears into two. The spindle fibers and centrioles disappear, the chromosomes return to chromatin, and the nuclear membrane reforms

In ____ of meiosis, the 23 chromosomes line up in the middle at the equator.

In ____ of meiosis, the 23 chromosomes split into 23 chromatids. 23 chromatids go one wya and 23 chromatids go the other way.

In ___ of meiosis, the 23 chromosomes are visible, the spindle fibers and centrioles appear, and the nuclear membrance disappears.

In ____ of meiosis, the cells tear into two. The spindle fibers and centrioles disappear, the chromatids turn into chromatin and the nucleus reforms. 4 new cells are created …new eggs in girls and new sperms in guys

the chemical code that makes up chromosomes. It gives directions as to what traits an organism will have.

the four nitrogen bases of DNA and tell which bases join together.

sugar and phosphates

4 nitrogen

Gene