Browse and search thousands of solved questions for your preparation.
Free questions with full explanations — locked behind signup to protect quality.
If two persons with 'AB' blood group marry and have the sufficiently large number of children, these children could be classified as 'A' blood group: 'AB' blood group: 'B' blood group in 1: 2: 1 ratio. The modern technique of protein electrophoresis reveals the presence of both 'A' and 'B' type proteins in 'AB' blood group individuals. This is an example of:
Change in the sequence of nucleotides in DNA is called:
The frequency of recombination between gene pairs on the same chromosome as a measure of the distance between genes was explained by :
In a plant, red fruit (R) is dominant over yellow fruit (r) and tallness (T) is dominant over shortness (t). If a plant with RRTt genotype is crossed with a plant that is rrtt, what percentage of the offspring will be tall with red fruit?
As per ABO blood grouping system, the blood group of father is B+, mother is A+ and child is O+. Their respective genotype can be
The allele for tallness is dominant over that of dwarfness. This is called:
The production of gametes by the parents, the formation of zygotes, the F1 and F2 plants can be understood using:
A tall true breeding garden pea plant is crossed with a dwarf true breeding garden pea plant. When the F1 plants were selfed, the resulting genotypes were in the ratio of:
Which of the following is true for Golden rice?
The fruit fly Drosophila melanogaster was found to be very suitable for experimental verification of the chromosomal theory of inheritance by Morgan and his colleagues because:
Match the terms in Column-I with their description in Column-II and choose the correct option. Column-I A. Dominance B. Codominance C. Pleiotropy D. Polygenic inheritance Column-II 1. Many genes govern a single character 2. In a heterozygous organism, only one allele expresses itself 3. In a heterozygous organism both alleles express themselves fully 4. A single gene influences many characters
In water hyacinth and water lily, pollination takes place by :
ABO blood group has:
In Mendel's experiments with garden peas, round seed shape (RR) was dominant over wrinkled seeds (rr), and yellow cotyledon (YY) was dominant over green cotyledon (yy). What are the expected phenotypes in the F2 generation of the cross RRYY x rryy?
Given below are two statements: One is labelled as Assertion (A) and the other is labelled as Reason (R). Assertion (A): In honey bee population, sons do not have fathers but have grandfathers. Reason (R): Haploidy in drones of honey bee is due to parthenogenesis while fertilisation results into female bees. In the light of the above statements, choose the correct answer from the options given below:
In Antirrhinum (Snapdragon), a red flower was crossed with a white flower and in F1 generation, pink flowers were obtained. When pink flowers were selfed, the F2 generation showed white, red, and pink flowers. Choose the incorrect statement from the following:
Identify the basic amino acid from the following.
Match the following genes of the Lac operon with their respective products : (a) i gene (i) $\beta$-galactosidase (b) z gene (ii) Permease (c) a gene (iii) Repressor (d) y gene (iv) Transacetylase. Select the correct option.
Match the following with respect to meiosis: (a) Zygotene, (b) Pachytene, (c) Diplotene, (d) Diakinesis. (i) Terminalization, (ii) Chiasmata, (iii) Crossing over, (iv) Synapsis.
In chloroplast, the highest number of protons are found in?