How did Morgan explained linkage of genes?

The closer two genes were to one another on a chromosome, the greater their chance of being inherited together. Therefore, Morgan correctly proposed that the strength of linkage between two genes depends upon the distance between the genes on the chromosome.

How did Morgan demonstrate that a specific gene was associated with a specific chromosome?

Morgan hypothesized that, in his breeding experiment, the first generation of flies contained males only with white eyes because the gene controlling eye color was on the X chromosome. Males displayed the white eye trait because the trait was present on their only X chromosome.

What did Bateson and Punnett experiment with sweet peas prove?

Through their collaborative experiments on poultry and sweet peas, Bateson and Punnett discovered some of the fundamental processes of Mendelian genetics, including complementation and the first example of autosomal (nonsexual chromosome) linkage.

Why did TH Morgan choose Drosophila experiment?

T. H. Morgan selected Drosophila melanogaster to study sex-linked genes in his lab experiment due to the following reasons: (ii) Sex-linked traits such as red eye colour and white eye colour are found only in Drosophila ​melanogaster, where white eye colour in males is a sex-linked recessive trait.

Which chromosome has most genes?

Chromosome 1 is the designation for the largest human chromosome….

Chromosome 1
No. of genes	1,961 (CCDS)
Type	Autosome
Centromere position	Metacentric (123.4 Mbp)
Complete gene lists

What is coupling and repulsion phase?

Coupling is the condition where the genes that are coming from the identical parents enter the same gamete are inherited together. In repulsion, the genes are coming from different parents and therefore are separated in different gametes which are separately inherited.

Who is the father of linkage?

In the early 1900s, William Bateson and R. C. Punnett were studying inheritance in the sweet pea.

What is difference between male and female Drosophila?

The most simple characteristic to use to differentiate the two is to look at the genitalia of the flies. Males have dark, rounded genitalia at the tip of their abdomen, whereas females have light, pointed genitalia. Male Drosophila are generally smaller than their female counterparts, and have a darker abdomen.

Why did Morgan Choose fruit flies for his genetic studies?

Morgan decided to use fruit flies to study how physical traits (for example, eye color) were transmitted from parents to offspring, and he was able to elegantly show that genes are stored in chromosomes and form the basis of heredity. …

Why do some flies have white eyes?

They have a defect in their “white” gene, which normally produces the red pigments in the eye. In these flies, the white gene only works partially, producing fewer red pigments than it should. These flies have white eyes.