Advertisements
Advertisements
प्रश्न
Two heterozygous parents are crossed. If the two loci are linked, what would be the distribution of phenotypic features in the F1 generation for a dihybrid cross?
Advertisements
उत्तर
Two heterozygous parents (i.e., GgLl and GgLl) are crossed, and the two loci are linked; then the cross will be:
This means, if ‘G’ represents a grey body (dominant), ‘g’ a black body (recessive), ‘L’ long (dominant) and ‘l’ dwarf (recessive), then the distribution of phenotypic features in the F1 generation will be 3 : 1, i.e., `3/4` will show the dominant feature, grey and long, either in a homozygous (GGLL) or in a heterozygous (GgLl) condition and `1/4` will show the recessive feature, black and dwarf (ggll).
APPEARS IN
संबंधित प्रश्न
Explain Mendel’s dihybrid ratio with the help of any one cross.
Give Technical Term:
The ratio of offspring on F2 generation in a dihybrid cross.
Complete the following sentence with appropriate word:
_______ is the ratio of dihybrid cross.
Complete the following sentence with appropriate word:
A character that is suppressed is _________.
Explain with an example the inheritance of the dihybrid cross. How is it different from monohybrid cross?
Under which conditions does the law of independent assortment hold good and why?
Which Mendelian idea is depicted by a cross in which the F1 generation resembles both the parents
Select the period for Mendel’s hybridization experiments
Among the following characters which one was not considered by Mendel in his experimentation pea?
Name the seven contrasting traits of Mendel.
A cross between two tall plants resulted in offspring having few dwarf plants. What would be the genotypes of both the parents?
Two linked genes a and b show 20% recombination. The individuals of a dihybrid cross between ++ /++ × ab/ab shall show gametes ______.
A normal green male maize is crossed with albino female. The progeny is albino because ______.
A dihybrid condition is ______.
Mendel’s last law is ______.
A fruit fly exhibiting both male and female traits is ______.
In a dihybrid cross AABB x aabb, F2 progeny of AABB, AABb, AaBB and AaBb occurs in the ratio of ______.
In a dihybrid cross, F2 phenotypic ratio is 13 : 3. It is case of ______.
Two genes ‘A’ and ‘B’ are linked. In a dihybrid cross involving these two genes, the F1 heterozygote is crossed with homozygous recessive parental type (aa bb). What would be the ratio of offspring in the next generation?
In the F2 generation of a Mendelian dihybrid cross the number of phenotypes and genotypes are ______.
Each gamete carry ______.
Given below is a dihybrid cross performed on Drosophila.
Which of the following conclusions can be drawn on the basis of this cross? When yellow bodied (y), white-eyed (w) Drosophila females were hybridized with brown bodied (y+), red-eyed males (w+) and F1 progenies were intercrossed, F2 generation would have shown the following ratio:
According to the evolutionary theory, formation of a new species is generally due to
Sahil performed an experiment to study the inheritance pattern of genes. He crossed tall pea plants (TT) with short pea plants (tt) and obtained all tall plants in F1 generation.
What will be set of genes present in the F1 generation?
When two hybrids rrTt and Rrtt are gassed, the phenotype ratio of offspring should be:
The ratio of 9 : 3 : 3 : 1 is due to:
