Mitosis phases
Happens before Mitsosis and prepares the cell for division
What is interphase?
Homologous chromosomes pair up and form a tetrad. Crossing over may also happen in this phase
What is prophase I?
The two types of gametes
What are sperm and egg?
One complete set of all chromosomes in each cell
What is a haploid?
Humans have this number of chromosomes in every diploid cell.
What is 46?
The second phase of mitosis, also the shortest phase, where the spindle fibers are completely attached to the chromosomes and the chromosomes line up in the middle of the cell
What is Metaphase?
Tetrads separate but the centromeres remain intact during this phase. Random separation also happens at the beginning.
What is Anaphase I?
Unequal cytoplasm division results in one egg cell and ...
What is a polar body?
Similar chromosomes that form into pairs during prophase I
What are tetrads?
A haploid cell has this many chromosomes
What is 23?
The first step of Mitosis, also the longest phase, where the centrioles separate and the spindle fibers begin to grow from the centrioles.
What is prophase?
Centromeres split and the chromatids seperate and go to each ends of the cell.
What is Anaphase II?
The process in which a diploid cell divides into four sperm cells. Occurs in males after puberty.
What is Spermatogenesis?
The part of a chromosome where chromatids are attached.
What is the centromere?
String like fibers which break apart chromosomes
What are spindle fibers?
Spindle fibers break apart and the chromosomes go to each ends of the cell.
What is Telophase?
Chromosomes align in the middle of the cell and become attached to spindle fibers.
Metaphase II?
The formation of one egg cell or ovum and many polar bodies is a process known as...
What is Oogenesis?
How genes independently seperate from one another when reproductive cells develop.
What is independent assortment?
Loose and unpackaged DNA is otherwise known as ...
What is chromatin?
After the cells divide, this phase splits up the cytoplasm, and other contents into the two daughter cells.
What is cytokinesis?
Cells divide but the membrane does not usually return. Each cell has one complete set of chromosomes.
What is telophase I?
A sperm and ovum nuclei fuse to become the...
What is a zygote?
Allows genetic diversity between siblings and happens during prophase I.
What is crossing over?
2 coiled chromatids which are joined at a centromere
What is a chromosome?