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Describe two ways in which genetic recombination occurs during meiosis?
Wiki User
∙ 13y ago
The independent orientation of chromosome tetrads in prophase I. Simplified diagram,
FM
FM
or
FM
MF
Crossing over also in prophase I.
A part of the female chromosome and a part of the male chromosome, aligned together, swap places; genetic material.
Wiki User
∙ 11y ago
Wiki User
∙ 14y ago- Cross over
- Independent assortment
Wiki User
∙ 13y agoConjugation
Transformation
Transduction
Wiki User
∙ 14y agoHomologous and non-homologous recombination.
Wiki User
∙ 14y ago
The two ways are:
1) Crossing Over
2) Independent Assortment or Random assortment
Wiki User
∙ 13y agoIndependent assortment & Cross over.
Wiki User
∙ 12y agoCrossing over , independent assortment .
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What are 2 sources of genetic variation in a population?
Any two of: Mutations Non-disjunctions during anaphase of meiosis Polyploidy Sexual reproduction e.g. crossing-over/recombination during meiosis IF YOU ARE LOOKING FOR THE STUDYISLAND ANSWER IT IS a population whose members have many different traits
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.
Why must a cell reduce the amount of genetic material during meiosis?
So that it can separate into more cells.
How can prophase I and metaphase I in meiosis cause genetic variation in offerspring?
by being cheesy Edited answer: During prophase I of meiosis pairing among homologous chrosomes takes place. This is followed by crossing over. The recessive and dominant genes get interchanged during chiasma formation and such interchanged genetic material get separated in to different cells during mtaphase I. Hence, prophase I and metaphase I cause genetic variations in the male and female gametes. On randum mating among these gametes, genetic variation in the offsring are caused.
What leads to genetic variation in a population?
Random mutations in an organism's DNA after reproduction.what lead to variations
What is the reshuffling of chromosomes during meiosis?
genetic recombination
What creates a variety in the offspring?
Genetic recombination during crossing over in prophase I of meiosis.
What is new gene combinations?
when genes cross over during meiosis, then split they from genes that differ.
Does meiosis have variation?
During meiosis, genetic recombination of homologous chromosomes occurs. So meiosis does result in genetic variation. After prophase I, during which crossing over occurs, every chromosome will have some maternal DNA and some paternal DNA.
Why is it necessary for homologous to pair during meiosis and not desirable for them to pair in mitosis?
to cross over which results in the genetic recombination
Why can plants vary from the plant parent?
Due to genetic recombination during gamete formation by meiosis and fusion of such gametes during fertilization.
What Recombination occurs during .?
Recombination occurs when two molecules of DNA exchange pieces of their genetic material with each other. One of the most notable examples of recombination takes place during meiosis (specifically, during prophase I), when homologous chromosomes line up in pairs and swap segments of DNA
What is random distribution of homologous chromosomes during meiosis called?
Segregation distortion, non-mendelian segregation.
How are crossing over and recombination related?
Genetic recombination occurs during meiosis cell division. As genes cross over during this process, scientists track the genes to study their linkage.
Recombination occurs during?
meiosis
Recombination occurs during which process?
Meiosis.
How does homologous recombination differ from crossing over?
There does not seem to be much difference. Recombination introduces genetic diversity. Single Crossing over results in genetic recombination. Double crossovers may or may not result in genetic recombination.
