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WorksheetsBiology MCQ class 12th
Total questions: 15
Worksheet time: 8mins
What is the branch of biology that deals with the inheritance and variation of characters from parents to offspring?
Ecology
Genetics
Physiology
Botany
Who conducted hybridisation experiments on garden peas and proposed the laws of inheritance in living organisms?
Alfred Wallace
Charles Darwin
Louis Pasteur
Gregor Mendel
What is the process by which characters are passed on from parent to progeny?
Evolution
Selection
Mutation
Inheritance
In Mendel's experiments, what is the genotype of a true-breeding tall pea plant?
TT
tt
Tt
YY
What is the phenotype of a plant with the genotype Tt according to Mendel's experiments?
Tall
Dwarf
In-between height
Green
In the ABO blood grouping system, which blood type is controlled by the gene I^A I^A or I^A i?
Type B
Type O
Type A
Type AB
What is the genotypic ratio in the F2 generation of a monohybrid cross according to Mendel's experiments?
2:1
3:1
1:2:1
9:3:3:1
Which scientists independently rediscovered Mendel's results on the inheritance of characters in 1900?
Watson and Crick
Sutton and Boveri
de Vries, Correns, and von Tschermak
Morgan and colleagues
What did Walter Sutton and Theodore Boveri use to explain Mendel's laws?
Ribosomes
Chromosomes
Mitochondria
Enzymes
Which organism did Thomas Hunt Morgan work with to experimentally verify the chromosomal theory of inheritance?
Fruit Flies
Mice
Fungi
Bacteria
What is the law that states 'when two pairs of traits are combined in a hybrid, segregation of one pair of characters is independent of the other pair of characters'?
Law of Co-dominance
Law of Segregation
Law of Independent Assortment
Law of Dominance
In a dihybrid cross, what is the genotypic ratio of the offspring according to Mendel's experiments?
2:1
1:1
3:1
9:3:3:1
What did Sutton and Boveri argue would lead to the segregation of a pair of factors they carried?
Ribosomes
Chromosomes
Enzymes
Mitochondria
What did Thomas Hunt Morgan work with to experimentally verify the chromosomal theory of inheritance?
Fungi
Fruit Flies
Mice
Bacteria
What did Walter Sutton and Theodore Boveri use to explain Mendel's laws?
Mitochondria
Ribosomes
Enzymes
Chromosomes
