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Worksheetsprinciples of inheritance & variation- Quiz 3
Total questions: 10
Worksheet time: 4mins
A tall red-flowered pea plant after crossing with a dwarf white-flowered plant yields only tall red-flowered plants. A test cross shall give a ratio of
1 : 1
3 : 1
1 : 2 : 4 : 6 : 4 : 2 : 1
1 : 1 : 1 : 1
Mendel did not propose the theory of –
dominance
incomplete dominance
segregation
independent assortment
Pleiotropic gene has –
single genotype
multiple genotype
multiple phenotype
single phenotype
A blue fowl obtained from mating between black and white fowls, is self-crossed. The F2 ratio is
1 black : 2 white : 1 blue
1 black : 2 blue : 1 white
2 black : 1 white : 1 blue
none of these
A child with mother of A group and father of AB group, will not have the following blood group –
A
B
AB
O
Linkage was discovered by
Mendel
Morgan
Crick
Muller
What will be the number of linkage groups in a cell having 2n = 20?
15
40
10
4
Column A Column B
I. Gene ------------------------ A. Homozygote
II. TT -------------------------- B. DNA
III. Alternate form of gene---- C. Dihybrid cross
IV. TtRr x TtRr ---------------------- D. Allele
The correct match is –
I – B, II – A, III – D, IV – C
I – D, II – A, III – B, IV – C
I – D, II – B, III – A, IV – C
I – B, II – C, III – D, IV – A
Linkage is
Stronger between genes located far away from each other upon the chromosome
Stronger between genes located close together upon the chromosome
Strength of linkage is not dependent upon the distance between the genes
It depends upon the nature of the concerned genes
X and Y-chromosomes are
Only morphologically similar
Only morphologically dissimilar
Morphologically as well as genetically dissimilar
None are correct.
