Principles Of Inheritance And Variation — DPP 9

20 NEET questions from Principles Of Inheritance And Variation, with answers and explanations. Attempt it as a timed test to get scoring, accuracy breakdown and mistake tracking.

Attempt this test free 20 questions · 30 minutes · +80 marks
1
In a cross between true breeding red flowered (RR) and true breeding white flowered (rr), snapdragon plant, the $\mathrm { F } _ { 1 } ( \mathrm { Rr } )$ was pink. When the $\mathrm{F _ { 1 }}$ was self-pollinated the $\mathrm{F _ { 2 }}$ resulted in the following ratio $\mathrm{1 ( R R )}$ red; $\mathrm{2 (Rr)}$ pink; $\mathrm{1 (rr)}$ white. Above condition can be explained by :-
  1. A True dominance
  2. B Incomplete dominance
  3. C Lethal gene
  4. D Independent assortment
Show answer

Correct answer: B

2
A man of A blood group marries a woman of AB blood group. Which type of progeny would indicate that man is heterozygous A
  1. A AB
  2. B A
  3. C O
  4. D B
Show answer

Correct answer: D

3
Blue eye colour in human is recessive to brown eye colour. The expected children of a marriage between a blue eyed woman and a brown eyed man who had a blue eyed mother will be :-
  1. A All black eyed
  2. B All blue eyed
  3. C All brown eyed
  4. D One blue eyed and one brown eyed
Show answer

Correct answer: D

4
TDF gene is a :-
  1. A A gene present on X-chromosome
  2. B A segment of RNA
  3. C A proteinaceous factor
  4. D A gene present on Y-chromosome
Show answer

Correct answer: D

5
Given pedigree shows inheritance of autosomal recessive gene. What is the genotype of given parents :-
Principles Of Inheritance And Variation – NEET-4792
  1. A AA, aa
  2. B aa, AA
  3. C aa, Aa
  4. D Aa, Aa
Show answer

Correct answer: A

6
Parents are carrier for albinism. What will be the first three children :-
  1. A Some normal, heterozygous & albino
  2. B All normal
  3. C All heterozygous albino
  4. D No normal
Show answer

Correct answer: A

7
How many types of genotypes are formed in $\mathrm{F _ { 2 }}$ progeny obtained from self pollination of a dihybrid $\mathrm{F _ { 1 }}$ :-
  1. A 9
  2. B 3
  3. C 6
  4. D 1
Show answer

Correct answer: A

8
If mother has blood group B, father has A group, the offspring will be of :-
  1. A A
  2. B O
  3. C A B
  4. D any of the above
Show answer

Correct answer: D

9
If there were only parental combinations in $\mathrm{F _ { 2 }}$ of a dihybrid cross then Mendel might have discovered :-
  1. A Independent assortment
  2. B Atavism
  3. C Linkage
  4. D Repulsion
Show answer

Correct answer: C

10
Which of the following possess homogametic male :-
  1. A Plants
  2. B Man
  3. C Insect
  4. D Birds
Show answer

Correct answer: D

11
One of the genes present exclusively on the X -chromosome in humans is concerned with:
  1. A Baldness
  2. B Red green colour blindness.
  3. C Facial hair/Moustaches in males.
  4. D Sickle cell anaemia
Show answer

Correct answer: B

12
In multiple allele system a gamete possesses:-
  1. A Two alleles
  2. B Three alleles
  3. C One allele
  4. D Several alleles
Show answer

Correct answer: C

13
An example of polygenic inheritance in human beings is :-
  1. A skin colour
  2. B sickle cell anaemia
  3. C colour blindness
  4. D phenylketonuria
Show answer

Correct answer: A

14
A family has five girls and no son, the probability of the occurrence of son as $6 ^ { \text {th } }$ child is :-
  1. A $1 / 2$
  2. B $1 / 5$
  3. C 1
  4. D No chance
Show answer

Correct answer: A

15
If Mendel has chosen to study traits determined by linked genes he would not have discovered :-
  1. A Law of segregation
  2. B Law of dominance
  3. C Law of independent assortment
  4. D Law of unit character
Show answer

Correct answer: C

16
When a cluster of genes show linkage behaviour they :-
  1. A Do not show a chromosome map
  2. B Show recombination during meiosis
  3. C Do not show independent assortment
  4. D Induce cell division
Show answer

Correct answer: C

17
Which of the following is a good example of multiple allele :-
  1. A ABO blood groups
  2. B Size of starch grain in pea
  3. C Shape of seed
  4. D Flower colour in pea
Show answer

Correct answer: A

18
Given below is a pedigree chart of a family with five children. It shows the inheritance of attached ear-lobes as opposed to the free ones. The squares represent the male individuals and circles the female individuals
Principles Of Inheritance And Variation – NEET-4788Which one of the following conclusions drawn is correct :-
  1. A The parents are homozygous recessive
  2. B The trait is Y-linked
  3. C The parents are homozygous dominant
  4. D The parents are heterozygous
Show answer

Correct answer: D

19
If father shows normal genotype and mother shows a carrier trait for haemophilia then :-
  1. A All the female children will be carrier
  2. B A male child has $50 \%$ chances of active disease
  3. C Female child has probability of $50 \%$ to active disease
  4. D All the female children will be colourblind
Show answer

Correct answer: B

20
The number of linkage groups in a cell having 10 pairs of chromosomes are :-
  1. A 5
  2. B 10
  3. C 15
  4. D 20
Show answer

Correct answer: B

Attempt this as a timed test

Reading answers is not the same as sitting the paper. Attempt it timed and you get your score, per-question timing, and the mistakes tracked for revision.

Start free

More Principles Of Inheritance And Variation tests

Principles Of Inheritance And Variation — DPP 1 20 Q Principles Of Inheritance And Variation — DPP 2 20 Q Principles Of Inheritance And Variation — DPP 3 20 Q Principles Of Inheritance And Variation — DPP 4 20 Q Principles Of Inheritance And Variation — DPP 5 20 Q Principles Of Inheritance And Variation — DPP 6 20 Q
All Principles Of Inheritance And Variation questions & tests →