NEET NCERT Principle Inheritance MCQs,Free mock,model tests,PDFS

Principles of Inheritance and Variation Mock Test-11

Question No:1

In the theoretical explanation of allelic interaction for dominant and recessive forms, the recessive trait is seen due to the production of

[A] Normal or less efficient enzyme
[B] A non-functional enzyme
[C] No enzyme production
[D] Either (b) or (c)



Question No:2

Genes responsible for ABO blood group determine which of the following biomolecules of RBC plasma membrane?

[A] Phospholipid
[B] Proteins
[C] Sugars
[D] Cholesterols



Question No:3

Shape of seed depends on starch granules size; so inheritance of seed shape show _____ relationship, while inheritance of starch grains show _____.

[A] Dominant recessive, codominance
[B] Incomplete dominance, codominance
[C] Dominant-recessive, incomplete dominance
[D] Codominance, incomplete dominance



Question No:4

If yellow body, white eyed drosophila is crossed with wild brown body red eyes drosophila. Then what would be the frequency of recombinants in F, generation?

[A] 100%
[B] 1.30%
[C] 98.70%
[D] 0%



Question No:5

Chromosomal aberrations are commonly observed in

[A] Germinal cells
[B] Cancer cells
[C] Nail base cells
[D] Gametes



Question No:6

Which of the following cell cycle event is responsible for polyploidy phenomenon?

[A] Failure of karyokinesis
[B] Failure of cytokinesis
[C] Failure of segregation
[D] Failure of spindle apparatus



Question No:7

Match the following
Column –I— Column – II
A. Haemophilia 1. Board palm with characteristic palm creased
B. Down’s syndrome 2. Delayed clotting of blood
C. Klinefelter’s syndrome 3. However feminine development
D. Turner’s Syndrome______ 4. Rudimentary ovaries

[A] A:1;B:3;C:2;D:4
[B] A:2; B:1; C:3; D:4
[C] A:4;B:2;C:1;D:3
[D] A:1; B:2; C:3; D:4



Question No:8

Mendel’s Law of independent assortment holds good for genes situated on the

[A] non-homologous chromosomes
[B] homologous chromosomes
[C] extra nuclear genetic element
[D] same chromosome



Question No:9

Occasionally, a single gene may express more than one effect. The phenomenon is called

[A] Multiple allelism
[B] Mosaicism
[C] Pleiotropy
[D] Polygeny



Question No:10

In a certain taxon of insects, some have 17 chromosomes and the others have 18 chromosomes. The 17 and 18 chromosome-bearing organisms are

[A] Males and females, respectively
[B] Females and males, respectively
[C] All males
[D] All females



Question No:11

The inheritance pattern of a gene over generations among humans is studied by the pedigree analysis. Character studied in the pedigree analysis is equivalent to

[A] Quantitative trait
[B] Mendelian trait
[C] Polygenic trait
[D] Maternal trait



Question No:12

It is said that Mendel proposed that the factor controlling any character is discrete and independent. This proposition was based on the

[A] Results of F3 generation of a cross
[B] Observations that the off springs of a cross made between the plants having two contrasting characters show only one character without any blending
[C] Self-pollination of F1 off springs
[D] Cross-pollination of parental generations



Question No:13

Two genes ‘A’ and ‘BA’ are linked. In a dihybrid cross involving these two genes, the F1 hetero-zygote is crossed with homozygous recessive parental type (aa bb). What would be the ratio of offspring in the next generation?

[A] 1:1:1:1
[B] 9:3:3:1
[C] 3:1
[D] 1:1



Question No:14

In the F2 generation of a Mendelian dihybrid cross, the number of phenotypes and genotypes are

[A] phenotypes-4; genotypes-16
[B] phenotypes-9; genotypes-4
[C] phenotypes-4; genotypes-8
[D] phenotypes-4; genotypes-9



Question No:15

Mother and father of a person with ‘0’ blood group have ‘A’ and ‘B’ blood group, respectively. What would be the genotype of both mother and father?

[A] Mother is homozygous for ‘A’ blood group and father is heterozygous for ‘B’
[B] Mother is heterozygous for ‘A’ blood group and father is homozygous for ‘B’
[C] Both mother and father are heterozygous for ‘A’ and ‘B’ blood group, respectively
[D] Both mother and father are homozygous for ‘A’ and ‘B’ blood group, respectively