Mitosis Flashcards
What happens in INTERPHASE?
DNA replicates ready for the cell to divide
What happens in PROPHASE?
Chromosomes condense and form visible bodies
Nuclear envelope breaks down
What happens in METAPHASE? (2 things)
Chromosomes line up in the middle of the cell
They attach to the spindle fibres by their centromeres
What happens in ANAPHASE?
Centromeres split
Sister chromatids separate and are pulled to opposite (polar) sides of the cell
What happens in TELOPHASE?
Chromosomes uncoil
Nuclear envelope reappears
A new cell membrane is formed
2 daughter cells are created
What happens in CYTOKINESIS?
It is the physical splitting of the 2 daughter cells during telophase that divides the cytoplasm to form to identical but separate cells
How many PAIRS of chromosomes do humans have?
23
What is the haploid number of human chromosomes?
23
What is the diploid number of human chromosomes?
46
How many chromosomes are formed in human gametes?
23
What is the DIPLOID number of chromosomes in CATTLE?
60
What is the DIPLOID number of chromosomes in DONKEYS ?
62
What is the DIPLOID number of chromosomes in PIGS?
38
What is the HAPLOID number of chromosomes in PIGS?
19
What is the HAPLOID number of chromosomes in CATTLE?
30
