Heredity and Variation — Practice Quiz
Maharashtra Board · Class 9 · Science
Try a 4-question quiz on Heredity and Variation for Maharashtra Board Class 9 Science: tap an answer to check it and see why.
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Quick Quiz: Heredity and Variation
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What is the transfer of characteristics from parents to offspring called?
How many chromosomes are present in human beings?
Which scientist is known as the father of genetics?
In Mendel's monohybrid cross, what is the phenotypic ratio in F2 generation?
Sample Questions
Which of the following are components of DNA? (Select all correct answers)
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Adenine, Guanine, Cytosine, Thymine
DNA contains four nitrogenous bases: Adenine (A), Guanine (G), Cytosine (C), and Thymine (T). Uracil is found in RNA, not DNA.
Dominant genes are represented by ______ letters and recessive genes by ______ letters.
Down syndrome is caused by an extra chromosome in which pair?
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21st pair
Down syndrome is caused by trisomy of the 21st chromosome, meaning there are three copies of chromosome 21 instead of two.
Which type of reproduction shows greater variation in offspring?
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Sexual reproduction
Sexual reproduction produces greater variation because offspring receive genetic material from both parents, while asexual reproduction produces offspring identical to the parent.
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