An allele is considered dominant

Mendel's dihybrid ratio is

Mendel studied seven contrasting characters for his breeding experiment with Pisum sativum, which of the following characters did he not use?

An organism with two identical allele of a gene in a cell is called

Which principle of inheritance was not given by Mendel

When dominant BB and recessive bb is crossed, the percentage of progeny showing the parental genotype is

The year 1900 AD is highly significant for genetics due to

The process by which the segregation of Mendelian factors takes place is

Which would most probably be the genetic makeup of the parents of a colour blind daughter?

If a heterozygous tall plant is crossed with a homozygous dwarf plant the proportion of dwarf progeny will be

When two tall plants are crossed 45 tall plants and 14 dwarf plants are obtained. The genotype of parent plants is

Which of the following is not a dominant character selected by Mendel in Pisum?

Who discovered the phenomenon of incomplete dominance in Mirabilis and Antirrhinum?

How many types of gametes are produced by a trihybrid?

A dihybrid heterozygous tall plant with round seed is crossed with a similar genotype, what percentage of plants should possess Tt Rr genotype?

A cross by changing the source of ovum is

When the phenotypic and genotypic ratios resemble in the F2 generation it is an example of

When the dihybrid Tt rr plants are self-fertilized, what percentage of descendants would be heterozygous for one character and homozygous for another?

In a double heterozygous plant (Eg: Aa Bb) four types of gametes are produced. This illustrate the law of

Back cross with recessive parent is called

If a gene has multiple effects, it is called

Maize has 10 pairs of chromosomes. How many linkage groups should it possess

Linked genes may be separated by

Crossing over in diploid organism is responsible for

Drosophila melanogaster has

A trisomic individual has a chromosomal number of

Among the following which one is the best chemical for inducing the polyploidy?

Down’s syndrome is an example of

Which of the following is 6x (hexaploid) wheat?

The holandric genes are located on

If the haploid number of chromosomes in a plant is 12, then the number of chromosomes in monosomic is

Alleles are paired in

Inheritance of flower colour is an example of incomplete dominance, which is seen in:

Haemophilia most likely originated as a result of

Chromosome complement with 2n-1 is called as

The most striking example of point mutation is found in a disease called

Gynaecomastia is a common feature seen in:

XO type of sex determination is seen in:

Which of the following is not a Mendelian disorder?

How many type of phenotypes possible for ABO blood group

Haemophilia in man is due to

In XO type of sex determination

Which one of the following cannot be explained on the basis of Mendel’s Law of Dominance?

The genotype of a plant showing the dominant phenotype can be determined by:

Which one of the following conditions correctly describes the manner of determining the sex in the given example?

F2 generation in a Mendelian cross showed that both genotypic and phenotypic ratios are same as 1:2:1. It represents a case of

Alleles which can express only in pair with similar allele is

Among the following traits that Mendel studied, choose the recessive one

When a dominant ‘AA’ and a recessive ‘aa’ are crossed percentage of the progenies showing the parental genotypes will be

A normal visioned man whose father was colour blind, marries a women whose father is also colour blind. They have their first child as a daughter. What are the chances that this child would be colour blind?

The incorrect statement with regard to Haemophilia is

Person with blood group AB is considered as universal recipient because he has

A patient with unknown blood group needs immediate blood transfusion. The group that can be donated will be

Which Mendelian idea is depicted by a cross in which the F1 generation resembles both parents

An F2 hybrid generation will have

Who among the following is not concerned with re-discovery of Mendelism

The diploid number of drosophila melanogaster

Linkage phenomenon explained first by

Who put forward the crossing theory of recombination

In honeybees

First child of a normal couple is phenylketouric. The probability of second male child is affected will be

Mutation of any single gene maybe

A normal man whose father was haemophilic marries a woman whose father was haemophilic. They have their first child as daughter. What is the chance that this could be

Choose the sex influenced trait

Clotting factors VIII is absent in

Pedigree analysis is useful for

Choose the incorrect statement regarding haemophilia

Choose the wrong statement

Which of the following cannot be detected in developing foetus by amniocentesis

Which mendelian idea is depicted by a cross in which the F1 generation resembles both the parents

If both parents are carriers of thalassemia, which is an autosomal recessive disorder, what are the chance of pregnancy resulting in an affected child

A human female with Turner’s syndrome

Which of the following cannot be expected on the basis of Mendel’s law of dominance

When heterozygous yellow round seed plants and self-fertilized, the frequency of occurrence of RrYY genotype among the offspring’s is

A person homozygous for autosomal loci ‘a’ and ‘b’ and heterozygous for gene ‘p’ shall produce how many types of gametes in respect of these loci

Experimental proof for chromosome theory of inheritance is given by

The nuclear structure observed by Henking in 50% of the sperms in the testes of a insect was termed

First artificial mutation was induced in

Hemophilic person marries a girl having no history of the disease in her pedigree. What is the chance that a haemophilic child is born to them