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The male chromosome is officially known as the Y chromosome.
The precise chromosome is not known; future research may yield results.
one of the sister chromatids in one of the two cells that was produced during the first division of meiosis did not separate during the second division resulting in one cell with an extra chromosome and one with a missing chromosome. This process is known as nondisjunction
These cells are known as
bivalent
A chromatid is one-half of two identical copies of a replicated chromosome. During cell division, the identical copies are joined together at the region of the chromosome called the centromere. They are known as sister chromatids. Once the paired sister chromatids separate from one another in anaphase of mitosis, each is known as a daughter chromosome. [source: About.com/Biology, see link below]
A chromatid is one-half of two identical copies of a replicated chromosome. During cell division, the identical copies are joined together at the region of the chromosome called the centromere.Joined chromatids are known as sister chromatids. Once the joined sister chromatids separate from one another in anaphase of mitosis, each is known as a daughter chromosome.Chromatids are formed from chromatin fibers.Bailey, Regina. "Chromatid." ThoughtCo, Apr. 17, 2017.
The male chromosome is officially known as the Y chromosome.
An X chromosome is known as an X chromosome based on its shape, which resembles an X. The Y chromosome resembles a Y.
The precise chromosome is not known; future research may yield results.
one of the sister chromatids in one of the two cells that was produced during the first division of meiosis did not separate during the second division resulting in one cell with an extra chromosome and one with a missing chromosome. This process is known as nondisjunction
These cells are known as
The mutation in which a segment of a chromosome is repeated is known as duplication.
Cytokinesis is the division of a eukaryotic cell into two daughter cells. This process usually begins in the late stages of mitosis and, sometimes, meiosis.
Nuclear fusion
bivalent
It is both. All chromosomes that are not sex-chromosomes (X or Y) are known as autosomes.