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Type of assortment that involves the random distribution of homologous chromosomes during meiosis?
Wiki User
∙ 13y ago
(Mendel's law of) independent assortment.
This states that the chromosomes can line up along the equatorial line in 2^23 different arrangements (in humans- but 2^n in other animals with a different number of chromosomes)
Wiki User
∙ 12y ago
Wiki User
∙ 13y agoWiki User
∙ 13y agoIndependent Assortment
Wiki User
∙ 12y agoIndependent
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What heredity factors were described by Mendel?
The Principles of Mendelian Heredity:A. Law of Segregation (First law)-The Law of Segregation states that when any individual produces gametes, the copies of a gene separate so that each gamete receives only one copy. A gamete will receive one allele or the other. The direct proof of this was later found following the observation of meiosis by two independent scientists, the German botanist, Oscar Hertwig in 1876, and the Belgian zoologist, Edouard Van Beneden in 1883. In meiosis the paternal and maternal chromosomes get separated and the alleles with the traits of a character are segregated into two different gametes.B. Law of Independent Assortment(Second law)-The Law of Independent Assortment, also known as "Inheritance Law", states that alleles of different genes assort independently of one another during gamete formation. While Mendel's experiments with mixing one trait always resulted in a 3:1 ratio (Fig. 1) between dominant and recessive phenotypes, his experiments with mixing two traits (dihybrid cross) showed 9:3:3:1 ratios (Fig. 2). But the 9:3:3:1 table shows that each of the two genes are independently inherited with a 3:1 phenotypic ratio. Mendel concluded that different traits are inherited independently of each other, so that there is no relation, for example, between a cat's color and tail length. This is actually only true for genes that are not linked to each otheIndependent assortment occurs during meiosis I in eukaryotic organisms, specifically metaphase I of meiosis, to produce a gamete with a mixture of the organism's maternal and paternal chromosomes. Along with chromosomal crossover, this process aids in increasing genetic diversity by producing novel genetic combinations.Of the 46 chromosomes in a normal diploid human cell, half are maternally-derived (from the mother's egg) and half are paternally-derived (from the father's sperm). This occurs as sexual reproduction involves the fusion of two haploid gametes (the egg and sperm) to produce a new organism having the full complement of chromosomes. During gametogenesis-the production of new gametes by an adult-the normal complement of 46 chromosomes needs to be halved to 23 to ensure that the resulting haploid gamete can join with another gamete to produce a diploid organism. An error in the number of chromosomes, such as those caused by a diploid gamete joining with a haploid gamete, is termed aneuploidy.In independent assortment the chromosomes that end up in a newly-formed gamete are randomly sorted from all possible combinations of maternal and paternal chromosomes. Because gametes end up with a random mix instead of a pre-defined "set" from either parent, gametes are therefore considered assorted independently. As such, the gamete can end up with any combination of paternal or maternal chromosomes. Any of the possible combinations of gametes formed from maternal and paternal chromosomes will occur with equal frequency. For human gametes, with 23 pairs of chromosomes, the number of possibilities is 223 or 8,388,608 possible combinations.[3] The gametes will normally end up with 23 chromosomes, but the origin of any particular one will be randomly selected from paternal or maternal chromosomes. This contributes to the genetic variability of progeny.Law of Dominance:Mendel's law of dominance states that if you have a pair of genes then the one that shows up in the offspring is most likely the dominant gene because the dominant is passed along more often than the recessive.
Which phase of a cell's lifecycle involves growth and preparation for cell division?
The interphase stage of a cell's lifecycle involves growth and preparation of the cell for division. Interphase includes the G1 phase, the S phase, and the G2 phase. The G1 and G2 phase includes production of proteins and cytoplasmic organelles. The S phase is the phase where chromosomes are duplicated.
The study of culture primarily involves what?
The study of culture primarily involves learning why various people live as they do.
What involves Urban driving often involves limited which often obstructs advance warning of traffic obstacles?
visibility
What kind of listening involves analyzing the artistic elements of something?
Appreciative listening involves analyzing the artistic elements of something (such as music).
What is the type of assortment that involves the random distribution of homologous chromosomes during meiosis?
Independent.
What is the type of assortment that involves the random distribution of homologous during meiosis?
independent
During which phase of meiosis do spindle fibers move the sister chromitatdes to the center of cells?
That would be anaphase I of meiosis. We know the question is concerning meiosis and not mitosis because it involves homologous chromosomes. Anaphase I begins when the kinetochore fibers stemming from the centrioles "grab" the centromeres of homologous chromosomes and "pull" them towards opposite ends of the cell.The mechanisms are a little more complicated than "grabbing" and "pulling," but for this question the mechanisms are of little importance.
Why don't sex cells have homologous pairs of chromosomes?
you need one chromosome from one parent and one from the other parent. These homologous pairs each have the same genes but different alleles. For instance, one may code for black hair while the other codes for brown hair. You need both to be present in order to have both the parents traits.
What is the other name of homologous recombination?
It's also called "general recombination".Sometimes homologous recombination is mistakenly called "crossover", but crossover is a result of homologous recombination and not really synonymous.
Which phase involves the chromosomes lining up along the equator of the cell?
Metaphase 1 is the phase of mitosis when the chromosomes line up along the equator. Homologous chromosomes line up in the middle of the cell, then spindle fibers attach onto the homologous chromosome.
What involves the division of the chromosomes and nucleus?
mitosis
What is a source of genetic variation that involves the swapping of sections of chromosomes during meiosis.?
What is a source of genetic variation that involves the swapping of sections of chromosomes during meiosis.?
What mutation involves two chromosomes?
Inversion and duplication!
What kind of cell involves chromosomes?
Chromosomes are found in the nucleus of a cell.
Which part of chromosome exchange during meiosis centromere or telomere?
During meiosis, chromosome exchange occurs at the chiasmata, which are points of crossing over between non-sister chromatids. The exchange involves the exchange of genetic material between homologous chromosomes, not specifically at the centromere or telomere regions.
How many pair of chromosomes do normal human cells contain?
Gametic [haploid] Cells are chromosome number n - which involves 23 individual chromosomes. Somatic [or diploid] Cells are chromosome number 2n - which involves 23 pairs of chromosomes. Mitotic Cells are 4n.
