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.
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
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.
So that it can separate into more cells.
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.
Random mutations in an organism's DNA after reproduction.what lead to variations
genetic recombination
Yes, crossing over occurs during the process of genetic recombination in meiosis, but not in mitosis.
meiosis
Recombination occurs during meiosis, specifically during the crossing over phase of prophase I. This process involves the exchange of genetic material between homologous chromosomes, leading to genetic variation in offspring.
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
During genetic recombination in meiosis, the possible DNA combinations that can result are a mix of genetic material from the two parent cells, leading to new combinations of alleles and variations in the offspring's DNA.
Genetic recombination during crossing over in prophase I of meiosis.
Homologous chromosome pairs are important in genetic recombination during meiosis because they carry similar genes from each parent. This allows for the exchange of genetic material between the chromosomes, leading to genetic diversity in offspring.
Homologous chromosomes play a crucial role in genetic recombination during meiosis by exchanging genetic material through a process called crossing over. This leads to genetic diversity in offspring, as it creates new combinations of genes on the chromosomes.
Recombination and independent assortment during meiosis contribute to genetic diversity by shuffling and mixing genetic material from two parents. Recombination creates new combinations of genes on chromosomes, while independent assortment randomly distributes these chromosomes into gametes. This results in a wide variety of genetic combinations in offspring, increasing genetic diversity.
Genetic recombination refers to the process by which two DNA molecules exchange genetic information. The three types of genetic recombination are crossing over, conservative site-specific recombination and transpositional recombination.
The rearranging of genetic instructions is called genetic recombination. This process occurs during meiosis, where homologous chromosomes exchange genetic material, leading to genetic diversity in offspring.