Advertisements
Advertisements
प्रश्न
Define complete linkage. Give an example of a cross, showing complete linkage.
उत्तर
Complete linkage:
It is a type of inheritance in which only the parental types appear in the progeny and the cross overs or recombinant types are absent. Here, the genes for the characters are linked genes and occur closely on the same chromosome and do not show independent assortment. Crossing over is absent between the linked genes.
The following cross shows complete linkage.
The F females of the above cross are crossed with homozygous recessive males. The ratio comes out to be 9: 1: 1: 8. The two genes did not segregate independently.
APPEARS IN
संबंधित प्रश्न
Answer the following question.
Name the type of cross that would help to find the genotype of a pea plant bearing violet flowers.
Differentiate between complete and incomplete linkage.
Which of the following refers to tendency of genes to inherit together?
From the following disorders identify the ODD one.
Which of the following will not result in variations among siblings?
A fruit fly heterozygous for sex-linked genes, is mated with normal female fruit fly. Male specific chromosome will enter egg cell in the proportion ______.
Two crosses between the same pair of genotypes or phenotypes in which the sources of the gametes are reversed in one cross, is known as ______.
Mr. Kapoor has Bb autosomal gene pair and d allele sex-linked. What shall be proportion of Bd in sperms?
When ‘Aa’ is crossed with ‘aa’, (A is dominant over a)
The enzyme involved in the process of crossing over is ______.