INHERITANCE AND VARIATION biology MCQ’s questions answers

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INHERITANCE AND VARIATION

Question 156 [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
A tall true breeding garden pea plant is crossed with a dwarf true breeding garden pea plant. When the F1 plants were selfed the resulting genotypes were in the ratio of : ..... [AIPMT-2016]
A
1 : 2 : 1 :: Tall homozygous : Tall heterozygous : Dwarf
B
1 : 2 : 1 :: Tall heterozygous : Tall homozygous : Dwarf
C
3 : 1 :: Tall : Dwarf
D
3 : 1 :: Dwarf : Tall
Question 157 [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
If both parents are carriers for thalassemia, which is an autosomal recessive disorder, what are the chances of pregnancy resulting in an affected child? ..... [NEET 2013]
A
No chance
B
50%
C
25%
D
100%
Question 158 [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
If F1 generation has all tall plants and ratio of F2 generation is 3 tall : 1 dwarf, it proves ..... [Odisha 2011]
A
law of independent assortment
B
law of segregation
C
law of dominance
D
incomplete dominance
Question 159 [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Sexual reproduction brings about ..... [CPMT 2002]
A
polyploidy
B
Aneuploidy
C
Euploidy
D
Genetic recombination
Question 160 [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
In albinism, the absence of which pigment makes the skin and hair light coloured ..... [EAMCET 1999]
A
Melanin
B
Carotene
C
haemoglobin
D
Chlorophyll
There are 160 questions to complete.