1
NEET 2016 Phase 1
MCQ (Single Correct Answer)
+4
-1
Change Language
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 -
A
3 : 1 :: Tall : Dwarf
B
1 : 2 : 1 :: Tall heterozygous : Tall homozygous : Dwarf
C
1 : 2 : 1 :: Tall homozygous : Tall heterozygous : Dwarf
D
3 : 1 :: Dwarf : Tall
2
NEET 2016 Phase 1
MCQ (Single Correct Answer)
+4
-1
Change Language
Pick out the correct statements :
(a) Haemophilia is a sex-linked recessive disease.
(b) Down's syndrome is due to aneuploidy.
(c) Phenylketonuria is an autosomal recessive gene disorder.
(d) Sickle cell anaemia is an X – linked recessive gene disorder.
A
(a), (b) and (c) are correct
B
(a), (c) and (d) are correct.
C
(a) and (d) are correct
D
(b) and (d) are correct.
3
NEET 2016 Phase 1
MCQ (Single Correct Answer)
+4
-1
Change Language
In a testcross involving F1 dihybrid flies, more parental-type offspring were produced than the recombinant-typeoffspring. This indicates
A
Both of the characters are controlled by more than one gene
B
The two genes are linked and present on the same chromosome
C
The two genes are located on two different chromosomes
D
Chromosomes failed to separate during meiosis
4
NEET 2016 Phase 1
MCQ (Single Correct Answer)
+4
-1
Change Language
Which of the following most appropriately describes haemophilia ?
A
Chromosomal disorder
B
X-linked recessive gene disorder
C
Dominant gene disorder
D
Recessive gene disorder

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