Which phase of Meiosis does independent assortment occur?
Independent assortment in meiosis takes place in eukaryotes during metaphase I of meiotic division. It produces a gamete carrying mixed chromosomes. Gametes contain half the number of regular chromosomes in a diploid somatic cell.
What assorts independently during meiosis?
When the alleles assort during meiosis, there will be four different combinations possible from this individual: EW, Ew, eW and ew. During meiosis, each pair of alleles on the homologous chromosomes sorts independently from all other pairs of alleles.
How does meiosis relate to the law of independent assortment?
The law of segregation is based on four main concepts:
- Genes exist in more than one form or allele.
- Organisms inherit two alleles (one from each parent) during sexual reproduction.
- These alleles separate during meiosis, leaving each gamete with one allele for a single trait.
- Heterozygous alleles exhibit complete dominance as one allele is dominant and the other recessive.
Is independent assortment the same as crossing over?
No, independent assortment occurs after crossing over. Crossing over occurs in prophase I while independent assortment occurs in metaphase I and anaphase I. During prophase I, a process called synapsis occurs. Subsequently, one may also ask, what is independent assortment in meiosis?
Which phase of Mendel's law is independent assortment?
Mendel's law of independent assortment can be seen in Prophase I (pachytene substage). However i personally think that this law can also be seen in metaphase I, where random arrangement of chromosomes can lead to independent assortment of those genes, which are located on non-homologous chromosomes.". Click to see full answer.
What is independent assortment?
This is a necessary part of sexual reproduction which allows two gamete cells to then fuse together to create a diploid zygote, containing all the DNA necessary to create a new organism.
What is the second stage of meiosis?
The second of the two consecutive divisions of the nucleus of eukaryotic cell during meiosis, and composed of the following stages: prophase II , metaphase II , anaphase II, and telophase II. Supplement. Meiosis is a specialized form of cell division that ultimately gives rise to non-identical sex cells.
What is independent assortment?
Independent assortment is the process where the chromosomes move randomly to separate poles during meiosis. Subsequently, question is, where is independent assortment in meiosis? Independent assortment has its basis in the mechanics of meiosis.
Where do homologous chromosomes align in meiosis?
In meiosis I, homologous chromosomes pair up and align at the midplane of the cell, such that each chromosome in a pair is equally likely to be found on one side of the midplane as the other. All the homologous pairs along the plane line up randomly.
What happens during meiosis?
During the meiosis process, independent assortment takes place. Meiosis and mitosis are almost same with the gamete cell being the final product. The gamete cells are haploid and contain half of the regular diploid DNA.
Why did Mendel use two different pea plants with different characteristics for breeding in his experiment?
Mendel used two different pea plants with different characteristics for breeding in his experiment in order to explain the law of independent assortment. In his experiment he crossed a round yellow plant with wrinkled green plant. As the yellow round pea plant has dominant effect on the wrinkled green one, the offspring produced was yellow round. But when he performed a dihybrid cross in the next generation, the results showed variation. This time the peas are not only yellow-round or green-wrinkled, in fact there were peas with green- round characteristics and as well as yellow and wrinkled.
