CBSE
Multiple Choice QuestionsIf an inheritable mutation is observed in a population at high frequency, it is referred as
DNA polymorphism
Expressed sequence tag
Sequence annotation
Linkage
Linkage
Frameshift mutation occurs when
base is subsituted
base is deleted or added
anticodons are absent
none of these
The condition in which there are more than two complete set of chromosome is called :
polytene
monoploidy
polyploidy
aneuploidy
In human the inheritance of sex linkage takes place through :
autosomes
Y - chromosome
X- chromosome
both 'b' and 'c'
The graphical representation to calculate the probability of all possible genotypes of offsprings in a genetic cross was developed by
Gregor Mendel
Kornberg
Har Gobind Khorana
George Gamow
George Gamow
If a homozygous red flowered plant is crossed with a homozygous white flowered plant, the offspring would be
half red-flowered
all red-flowered
half white-flowered
half pink-flowered.
The ratio in a dihybrid test cross between two individuals is given by
2 : 1
1 : 2 : 1
3 : 1
1 : 1 : 1 :1
Pure line breed refers to
heterozygosity only
heterozygosity and linkage
homozygosity only
homozygosity and self assortment
Which of the following is a X-linked disease ?
Tetany
Colourblindness
Xeroderma
Hypertricosis
Multiple allelism is observed in
flower colour in Snapdragon
pod colour in Pisum sativum
haemophilia in man
sex determination in birds
sex determination in birds
