NEET CBSE NCERT Biology objective Questions,model,practice, exams

Principles of Inheritance and Variation Mock Test-1

Question No:1

Mendel was born in

[A] 17th century
[B] 18th century
[C] 19th century
[D] 8th century



Question No:2

Mendel was the native of

[A] France
[B] Sweden
[C] India
[D] Austria



Question No:3

Mendel proposed which of the following terms for hereditary units?

[A] Factor (determiner)
[B] Genome
[C] Genetic particle
[D] None of the above



Question No:4

In genetics, the use of chequer board was done by

[A] Mendel
[B] Correns
[C] Punnet
[D] Darwin



Question No:5

In 1900 A.D., three biologists independently discovered Mendel’s principles. They are

[A] De Vries, Correns and Tschermak
[B] Sutton, Morgan and Bridges
[C] Avery, McLeod and McCarthy
[D] Bateson, Punnet and Bridges



Question No:6

Which of the following has been used for genetic researches?

[A] Pisum
[B] Neurospora
[C] E. coli
[D] All of the above



Question No:7

Organism of pure line is that which produces individuals of

[A] Dominant characters
[B] Recessive characters
[C] Its own characters
[D] Intermediate type



Question No:8

Mendel is famous for his work on

[A] Pisum
[B] Drosophila
[C] Neurospora
[D] Oenothera



Question No:9

The main reason for the success of Mendel was

[A] Study of all the characters at the same time
[B] Study of one character at one time
[C] Study of all the plants at the same time
[D] Counting of plants



Question No:10

The alleles are

[A] A pair of genes governing a specific character such as tallness or dwarfness
[B] Multiple forms of genes
[C] Genes governing eye characters
[D] Genes present in allosomes



Question No:11

An allele is said to be dominant if :

[A] It is expressed only in heterozygous combination
[B] It is expressed only in homozygous combination
[C] It is expressed in both homozygous and heterozygous condition
[D] It is expressed only in second generation



Question No:12

What is the correct sequence of the following events?
1. Formation of the chromosome theory of heredity
2. Experiments which proved that DNA is the hereditary material
3. Mendel’s laws of inheritance—discovery

[A] 1,3 and 2
[B] 1,2 and 3
[C] 3,1 and 2
[D] 2, 1 and 3



Question No:13

When a true breeding pea plant that has yellow seeds is pollinated by a plant that has green seeds, then all the F1 plants have yellow seeds. This means that the allele for yellow is

[A] Heterozygous
[B] Dominant
[C] Recessive
[D] Lethal



Question No:14

An organism’s genetic constitution is called its

[A] Genotype
[B] Phenotype
[C] Holotype
[D] None of these



Question No:15

An organism with two identical alleles for a given trait is

[A] Homozygous
[B] Segregating
[C] Dominant
[D] A hermaphrodite