Cell division 🐒
What is the difference between karyokinesis and cytokinesis?
Karyokinesis is the division of the nucleus whereas cytokinesis is the division of the cytoplasm.
What happens at metaphase in mitosis?
The chromosomes line up at the equator plane.
What happens at the telophase in mitosis?
The chromosomes are at opposite poles.
What is the difference between mitosis and meiosis?
Mitosis:
The cell divides __and daughter cells are ___.
Meiosis:
The cell divides __and daughter cells are __.
-once, diploid
-twice, haploid
What is the product of meiosis?
Sperm and ovum
Each human cell has 23 pairs of chromosomes. If one of the pairs of chromosomes does not separate during meiosis, how many chromosomes are there in the gametes?
22/24
What is the number of chromosomes that are found in an individual with Down syndrome?
47
Sequence of phases in a cell cycle?
G1--->S--->G2--->M
There are 36 chromosomes in the nucleus of an organism. How many chromosomes are formed in a daughter cell through mitosis?
36
What is the end products of mitosis?
Two identical diploid cells
What happens at G1 phase?
Organelle synthesis
What happens at S phase?
DNA replication
What happens at G2 phase?
ATP production
What happens at M phase?
Nuclear division
A pollen grain of a plant is found to have 10 chromosomes. How many chromosomes does a leaf cell of the same plant have ?
10
What can occur as a result of uncontrolled mitosis?
Leukaemia, malignant tumour, benign tumour