1
NEET 2016 Phase 1
MCQ (Single Correct Answer)
+4
-1
Change Language
Which of the following approaches does not give the defined action of contraceptive ?
A
Intra uterine devices $$ \to $$ Increase phagocytosis of sperms, suppress sperm motility and fertilizing capacity of sperm
B
Barrier methods $$ \to $$ Prevent fertilization
C
Hormonal contraceptives $$ \to $$ Prevent/retard entry of sperm, prevent ovulation and fertilization
D
Vasectomy $$ \to $$ Prevents spermatogenesis
2
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
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