Genetics (Pedigree Analysis) Test - Botany, Class 12 - Class 12 MCQ

A plant is heterozygous and is designated Bb and produces two kinds of gametes B and b. The probability of b gamete fertilising  B or b is :-

A pedigree is shown below for a disease that is autosomal dominant. The genetic make up of the first generation is

At a particular locus, frequency of 'A' allele is 0·6 and that of 'a' is 0·4. What would be the frequency of heterozygotes in a random mating population at equilibrium 

Golden rice is a promising transgenic crop. When released for cultivation, it will help in

Which one of the following is the most suitable medium for culture of Drosophila melanogaster? 

Phenotype of an organism is the result of –

In which mode of inheritance do you expect more maternal influence among the offspring?

 How many different kinds of gametes will be produced by a plant having the genotype AABbCC?

Two microbes found to be very useful in genetic engineering are 

In Mendel's experiments with garden pea, round seed shape (RR) was dominant over wrinkled seeds (rr), yellow cotyledon (YY) was dominant over green cotyledon (yy). What are the expected phenotypes in the F₂ generation of the cross RRYY × rryy ?

One ene–one enzyme hypothesis was postulated by

 Test cross involves 

If a colourblind woman marries a normal visioned man, their sons will be 

In maize, hybrid vigour is exploited by:-

Differentiation of organs and tissues in a developing organism, is associated with

Differentiation of organs and tissues in a developing organism, is associated with :

Inheritance of skin colour in humans is an example of :-

One gene - one enzyme relationship was established for the first time in :-

A genetically engineered micro-organism used successfully in bioremediation of oil spills is a species of :-

Two genes R and Y are located very close on the chromosomal linkage map of maize plant. When RRYY and rryy genotypes are hybridized, the F₂ segregaion will show :- 

A common test to find the genotype of hybrid is by 

In pea plants, yellow seeds are dominant to green.If a heterozygous yellow seeded plant is crossed with a green seeded plant, what ratio of yellow and green seeded plants would you expect in F₁ generation :

 The restriction enzyem ECO RI has the property of

DNA ligase is an enzyme that catalyses the :-

Segregation of genes take place during

Which of the following processes affect the HardyWeinberg Equilibrium to cause variation at the genetic level :-

A gene containing multiple exons and at least one intron is termed as :-