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When parts of chromosomes are broken off and lost during mitosis or meiosis the result is an?
Wiki User
∙ 13y ago
when parts of chromosomes are broken off and lost during mitosis the results is a chromosomal mutation
Wiki User
∙ 13y ago
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Why does meiosis result in more genetic variation than mitosis?
It would be wrong to consider mitosis insignificant as it helps in cell repair and replacement in our daily life and it would be impossible to survive without it and asexual reproduction as well but if it weren't for meiosis, none of us would have been born :) Meiosis is responsible for the division for our gamete cells which leads to the formation a zygote. from there on mitosis takes over.
Does random alignment of chromosomes during Meiosis produce genetic variations?
In meiosis crossing over may occur at certain points on a chromatid. Crossing over is where variation occurs in allele combination. When a Zygote is formed alleles from mother and father cross over.. this is why you may have some features resembling your father and your mother... or grandma or grandpa... etc... There can be mutations ( messups ) in mitosis but the actual process results in no genetic variation. AP bio
How many divisions occur in meiosis?
Meiosis does in fact divide twice, once in meiosis I (cytokinesis) and meiosis II (cytokinesis) basically it divides into four daughter cells at the end of meiosis. Two from meiosis I and four in meiosis II
How is genetics material combined between two parents?
During sexual reproduction male and female gametes are formed in the respective reproductive organs. The gametes are haploid having half the number of chromosomes found in the parent body cells. These chromosomes have the genetic material in the form of DNA. When a male gamete unites with a female gamete during fertilization, the chromosomes in the zygote get doubled. The homologous chromosomes get paired at the time of meiosis in these offsprings and get combined by crossing over.
Does cossing over lead to genetic variation?
Crossing over: exchange of parts of DNA in a homologous chromosome in the area where they come in contact with each other. Then this chromosome splits, during meiosis, to form a daughter cell (gamete) with a haploid number of chromosomes. During fertilization, the two gametes fuse into one cell containing now a diploid number of chromosomes. This process leads to genetic diversity and variation.
When parts of chromosomes are broken off and lost during mitosis or meiosis the result is?
when parts of chromosomes are broken off and lost during mitosis the results is a chromosomal mutation
When parts of chromosomes are are broken off and and lost or reattach incorrectly during mitosis or meiosis the result is a?
Mistake.
When do chromosome duplicate themselves during mitosis?
In Mitosis, the chromosomes duplicate themselves. In Meiosis 1, they duplicate, however they do not duplicate in meiosis 2.
Do chromosomes double in mitosis?
Mitosis occurs in almost all eukaryotic cells. The duplication of chromosomes only occurs during the S phase of interphase in mitosis to form chromatids.
What is the pairing of replication chromosomes during meiosis called?
I believe it is the Anaphase of Mitosis
When choromosomes are visible in the nucleus?
Chromosomes are visible in the cell nucleus during mitosis and meiosis.
How many homologous chromosomes interact with each other or dont during mitosis and meiosis?
In mitosis, the homologous chromosomes dont interact, but in meosis, they separate during Anaphase 1. In mitosis, the homologous chromosomes dont interact, but in meosis, they separate during Anaphase 1.
Why do the chromosomes become easier to see under the microscope just before mitosis?
during mitosis and meiosis because the condensed chromosomes are thicker and therefore more prominent.
What is one of the two strands of a chromosomes that become visible during meiosis or mitosis?
daughter strands
During mitosis and meiosis kinetochore fibers are thought to?
Kinetochore fibers are thought to move chromosomes.
Do the chromosomes line up in the center of the cell?
They line up during metaphase of mitosis and meiosis
Do the chromosomes separate once in both mitosis and meiosis?
No. In mitosis the chromosomes separate once. In meiosis, in anaphase I, homologous chromosomes separate, but are still attached as sister chromatids. In anaphase II, the sister chromatids separate. So there are two chromosome separations in meiosis.
