CBSE
Multiple Choice QuestionsHow many pairs of contrasting characters in pea pod were chosen by Mendel?
3
5
7
9
If a cross between two individuals produces offsprings with 50% dominant character (A) and 50% recessive character (a) the genotype of parents are
Aa Aa
Aa aa
AA aa
AA Aa
Which of the following condition is called monosomic?
2n + 1
2n + 2
n + 1
2n - 1
Polyploid derived from two different species is called
autopolyploid
triploid
allopolyploid
monoploid
Short Answer TypeWhat is a test cross? Why is it so named?
Multiple Choice QuestionsWhich of the following is correct
Haemophilic-Y-chromosome
Down's syndrome-21' chromosome
Sickle cell anaemiaX-chromosome
Parkinson's disease-X and Y-chromosome
Test cross is a cross between
hybrid and dominant parent
hybrid and recessive parent
two hybrid parents
two distantly related species
The gene of sickle cell anaemia is inherited by
blood cells
bone cells
sex chromosomes
autosomes
Which pairs of the following diseases are caused by two genes located on human X-chromosomes?
Colour blindness and phenylketonuria
Colour blindness and haemophilia
Colour blindness and albinism
Colour blindness and hypertrichosis
A character, which is expressed in a hybrid is called
dominant
co-dominant
recessive
epistaticn
