Genetics
ICSE · Class 10 · Biology
Practice quiz for Genetics — ICSE Class 10 Biology. MCQs and questions with answers to test your preparation.
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Who is known as the Father of Genetics?
Which plant did Mendel choose for his experiments?
What is the basic unit of heredity?
What is the diploid chromosome number in humans?
Sample Questions
Which of the following are reasons why Mendel selected garden pea for his experiments?
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Annual plant with short life span, Seven pairs of contrasting characters, Self-pollinated and can be cross-pollinated, High yield
Mendel selected garden pea because it is an annual plant (short life span), has seven pairs of easily detectable contrasting characters, is self-pollinated but can be cross-pollinated, and has high yield. Being expensive was not a reason for selection.
Which nitrogenous bases are purines in DNA?
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Adenine, Guanine
Purines are double-ringed compounds in DNA. Adenine and Guanine are purines. Cytosine and Thymine are pyrimidines (single-ringed compounds).
In humans, which parent determines the sex of the child?
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Father
In humans, the father determines the sex of the child because males produce two types of sperms (22+X and 22+Y), while females produce only one type of ovum (22+X). The type of sperm that fertilizes the ovum determines the child's sex.
What is the phenotypic ratio in F2 generation of a monohybrid cross?
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3:1
In a monohybrid cross, the phenotypic ratio in F2 generation is 3:1 (dominant:recessive). The genotypic ratio is 1:2:1. The 9:3:3:1 ratio is for dihybrid cross.
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