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Question
Give Technical Term:
The hereditary unit, which is responsible for inheritance.
Solution
Gene
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RELATED QUESTIONS
Give appropriate biological/technical terms for the following:
A pair of corresponding chromosomes of the same size and shape, one from each parent.
In a homozygous pea plant, axial flowers (A) are dominant over terminal flowers (a).
(i) What is the phenotype and genotype of the F1 generation if a plant bearing pure axial flowers is crossed with a plant bearing pure terminal flowers?
(ii) Draw a Punnett square board to show the gametes and offsprings when both the parent plants are heterozygous for axial flowers.
(iii) What is the phenotypic ratio and genotypic ratio of the above cross shown in (ii)?
(iv) State Mendel’s Law of Dominance.
(v) Name two genetic disorders commonly seen in human males.
Predict the genotype and phenotype of the following cross in pea.
TtRr x TtRr
(Capital letters show dominance)
Multiple Choice Question
Who among the following is called father of genetics?
The pairs of contrasting character (traits) of Mendel are called ______.
To study the natural phenomenon of inheritance, Mendel selected pea plants. Which of the following properties were suitable for their studies?
(i) Plants would easily self-pollinate or cross-pollinate in nature.
(ii) Plants were easily grown in garden soil with a considerably shorter generation time.
(iii) Pea plants do not require true-breeding for hybridization experiments.
(iv) Many parts of the plant such as pod, seed, flower, cotyledons showed distinct phenotypes.
Mendel selected pea as material for his experiments because:
In order to obtain the F1 generation Mendel pollinated a pure-breeding tall plant with a pure breeding dwarf plant. But for getting the F2 generation, he simply self-pollinated the tall F1 plants. Why?
Identify the incorrect statement with reference to the gene ‘I’ that controls ABO blood groups.
A male plant bearing red flowers was crossed with a female plant bearing yellow flowers. In the F1 generation, all the flowers were orange in colour.
Mention the ratio of red flowers, yellow flowers and orange flowers in the F2 generation.
