Can triploid cells undergo mitosis?
Can triploid cells undergo mitosis?
Can triploid cells undergo mitosis? – Quora. Yes.
What does M CDK do in mitosis?
Mitotic CDKs are best known for their essential function in initiating mitosis, where they promote mitotic spindle formation, chromosome condensation, and the breakdown of the nuclear envelope (Nigg 2001; Miele 2004). The functions of these kinases in later stages of mitosis are less well understood.
What is G1 G2 and S in mitosis?
G1 phase (Gap 1) – Cellular contents excluding the chromosomes, are duplicated. II. S phase (DNA Synthesis) – Each of the 46 chromosomes are duplicated by the cell. G2 phase (Gap 2) – The Cell “double checks” the duplicated chromosomes for error, making any needed repair.
What are the five Subphases of mitosis?
Today, mitosis is understood to involve five phases, based on the physical state of the chromosomes and spindle. These phases are prophase, prometaphase, metaphase, anaphase, and telophase.
What happens when a triploid cell undergoes meiosis?
Meiosis in triploids results in four highly aneuploid gametes because six copies of each homolog must be segregated into four meiotic products. Strains derived from some of the aneuploid spore colonies had very high frequencies of mitotic chromosome loss, resulting in genetically diverse populations of cells.
Why can’t a triploid cell go through meiosis?
Triploid organisms are normally sterile as their lack of homologous chromosomes prevents pairing during meiosis. This can be useful to plant breeders, for example in banana cultivation: sterile triploid bananas can be propagated asexually and will not contain any seeds.
How is M-CDK activated?
The activation of M-Cdk. Cdk1 associates with M-cyclin as the levels of M-cyclin gradually rise. The resulting M-Cdk complex is phosphorylated on an activating site by the Cdk-activating kinase (CAK) and on a pair of inhibitory sites by the Wee1 kinase.
What are the functions of M-CDK?
M-CDKs also influence the assembly of the mitotic spindle by phosphorylating proteins that regulate microtubule behavior. The net effect of these coordinated phosphorylation reactions is the accurate separation of chromosomes during mitosis.
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