Agrobacterium tumefaciens contains a large plasmid, which induces tumour in the plants it is termed as
[Uttaranchal PMT 2004]
A trihybrid cross involve three pair of characters which will give rise to the F1 hybrids which are heterozygous for three genes. How many types of gametes will be produced in both male and female
[Uttaranchal PMT 2006]
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A functional complex comprising a cluster of genes including structural gene, a promoter gene, an operator gene and a regulator gene was discovered by :-
[Uttaranchal PMT 2006]
Which one of the following traits studied by Mendel in garden pea was a recessive character :-
[Uttaranchal PMT 2006]
When an F1 individual is crossed with its either of the two parent. Then it is known as :-
[Uttaranchal PMT 2006]
Dihybrid test cross ratio proposed by Mendel is
[West Bengal 2007]
In incomplete dominance ratio of Red : Pink : White is :-
[West Bengal 2007]
How many pairs of contrasting characters were chosen by Mendel for his study with garden pea:-
[C.G. PMT 2004]
The term 'allelomorphic' implies :-
[C.G. PMT 2004]
If a homozygous red flowered plant is crossed with white plant, the offspring will be :-
[C.G. PMT 2004]
What would be the colour of flower in F1 progeny as a result of cross between homozygous red and homozygous white flowered Snapdragon :-
[C.G. PMT 2004]
Who postulated the 'Chromosome Theory of Inheritance' :-
[C.G. PMT 2004]
The tendency of offspring to differ from parents is called
How many types of genotypes are formed in F2 progeny obtained from self polination of a dihybrid F1 :-
[C.G. PMT 2005]
Functioning of structural genes is controlled by :-
[C.G. PMT 2005]
An organism with two identical allele of a gene in a cell is called:
Mendel observed that certain characters not assort independently. Later research found it to be due to :-
[C.G. PMT 2006]
Nobel prize for the concept of jumping genes was awarded to :-
[C.G. PMT 2006]
More advancement in genetic engineering is due to :
[Jharkhand 2006]
The 1 : 2 :1 ratio with the pink flower in the F2 generation indicate the phenomenon of :-
[Jharkhand 2005]
Transgenic crops are modified through genetic engineering to develop natural resistance to insect pests. Which one is a transgenic plant :-
[Jharkhand 2004]
In Mirabilis red (RR) and white (rr) flower produces pink (Rr) flower. A plant with pink flower is crossed with white flower the expected phenotypic ratio is :-
[Jharkhand 2003]
If a dwarf plant is treated with gibberellins it becomes tall and this plant now crosses with pure tall plant then progeny of first generation (F1) is
[Bihar 2005]
If different alleles are present in the same genotype then it is called
Which one of the following is associated with sexlinked inheritance :-
[Bihar 2002]
Sex determination ratio in an organism is given by X/A = 1.5 , then organism will be :-
[Bihar 2001]
The physical expression or appearance of a character is called as