Morgan considered the evidence and proposed that a process of crossing over, or recombination, might explain his results. Specifically, he proposed that the two paired chromosomes could "cross over" to exchange information.
Morgan coined the term 'recombination' to describe the physical association of genes on a chromosome.
scientist T.H. MorganThe phenomenon of linkage was studied by the scientist T.H. Morgan using the common fruit fly or Drosophila melanogaster.
In cosmology, recombination refers to the epoch during which charged electrons and protons first became bound to form electrically neutral hydrogen atoms. Recombination occurred about 370,000 years after the Big Bang (at a redshift of z = 1100).
(physics) a combining of charges or transfer of electrons in a gas that results in the neutralization of ions; important for ions arising from the passage of high-energy particles.
Recombination is a process by which pieces of DNA are broken and recombined to produce new combinations of alleles. This recombination process creates genetic diversity at the level of genes that reflects differences in the DNA sequences of different organisms.
In 1910, Thomas Hunt Morgan performed an experiment at Columbia University, in New York City, New York, that helped identify the role chromosomes play in heredity. That year, Morgan was breeding Drosophila, or fruit flies.
Identifying Recombinants from GenotypeThe frequency of recombinant phenotypes within a population will typically be lower than that of non-recombinant phenotypes.The relative frequency of recombinant phenotypes will be dependent on the distance between linked genes.More items...
Gregor Mendel describes his experiments with peas showing that heredity is transmitted in discrete units. From earliest time, people noticed the resemblance between parents and offspring, among animals and plants as well as in human families. Gregor Johann Mendel turned the study of heredity into a science.
In his study of pea plants, Gregor Mendel used which method to produce offspring? cross-pollination, by using parents that had different traits.
Solution : Recombination is the process of producing a new combination of genes by crossing over during meiosis.
Applications:
It is a means of introducing new traits.
Variability is increased, which is necessary for natural selection.
It is used for preparing linkage chromosome maps.
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.