MCQs of Biology – Dihybrid Cross

Mendel’s second law is:

Mendel’s law of independent assortment can be demonstrated by:

A cross between two pairs of alleles is called:

A cross between plants having RRYY ar rryy composition will yield plants with:

Organism heterozygous for two genes shall be:

Ratio 9:3:3:1 is due to:

Mendel’s dihybrid cross ratio is:

Phenotypic dihybrid ratio in Fe generation is:

In F2 the phenotypic ratio of dihybrid cross is:

Shen a tall plant with round seeds (TTRR) crossed with a dwarf plant with wrinkle seeds (ttrr), the F1 generation consists of tall plants with round seeds. What would be the proportion of dwarf plant with wrinkle seeds in F2 generation?

A dihybrid for qualitative trait is crossed with homozygous recessive individual of its type , the phenotypic ratio is:

When two hybrids of rr Tt and Rrtt are crossed, the phenotypic ratio of offsprings shall be:

Tall pea plant with red flower crossed to dwarf with white flower yields only tall red plants. A test cross shall give a ratio of:

The ratio of 1:1:1:1 is obtained from a cross between the parents:

Phenotypic ratio of dihybrid test cross is:

IN a dihybrid cross pure homozygous plants will be:

Genotypic ratio of dihybrid cross is:

IN pumpkins, Yellow (Y) is dominant over white (y); big (B) is dominant over small (b0. What is the expected phenotypic ratio of the offsprings when pumpkins, heterozygous for both traits are crossed?

In a dihybrid cross AABBx aabb,F2 progeny of ARBB, AABbm Aa BB and Aa Bb occurs in the ratio of:

Mendel,s law of independent assortment is based on Fe ratio of:

Female Aa Bb is crossed with male AAbb. The gametes shall be:

From a cross AABbx aaBb, the genotypes AaBB, Aabb, aabb will be obtained in the following ratio:

In a certain plant, red fruit (R) is dominant over yellow fruit (r) and tallness (R) is dominant over dwarfness (t). If a plant with RRTt genotype is crossed with a plant that is rrtt, what will be the percentage of tall plants , with red fruits in the progeny?

In guninea pigs, smooth coat (S) is dominant over rough coat (s) and black coat (B) is dominant over white coat (b). In the cross SsBbx SsBb, how many of the offspring will have a smooth black coat on average?

In humans, short fingers and discontinuous hairline are dominant over long fingers and continuous hairline. A heterozygote in both regards reproduces with a similar heterozygote. What is the chance of any one child having the same phenotype as the parents?

A human male produces sperms with the genotypes AB. AB. aB , and ab pertaining to two ciallelic characters in equal proportions. What is the corresponding genotype of this person?

The cytological event that corresponds to Mendel,s law of independent assortment is seen in:

Which of the these could be a normal gamete?

Gametes of AaBb individuals can be:

Genetic traits are often carried on sieparate chromosomes. Which of the following genotype represent a dihybrid organism?

An individual heterozygous for two alleles (CcDd) produce one million sperms; how many of the sperms will have both dominant alleles?

Probabilityof genotype TT rr in F2 generation of dihybrid cross is:

Probabilityof genotype TTrr in F2 generation of dihybrid cross is:

Mendelian recombination are due to:

Independent assortment means:

IN Mendelism, linkage was not observed due to:

Mendel did not notice /An exception to Mendel’s laws:

If Mendel had studied the 7 traits using a plant with 12 chromosomes instead of 14, in what way would the interpretation have been different?

Which of the following demonstrates ‘the law of independent assortment’?

Law of Mendel, which is not completely applicable, is: