“Filial 1 progeny” refers to
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Explanation
NCERT Page No. 71
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What is the cause of variation?
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Variation arises due to meiosis, where genetic recombination and random segregation of chromosomes occur. Meiosis produces haploid gametes with unique genetic combinations, leading to variation in the offspring. Asexual reproduction, amitosis, and mitosis do not contribute to genetic variation.
How many laws of Mendel are based on monohybrid cross?
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NCERT Page No. 75
Gregor Mendel is known for
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NCERT Page No. 70
A cross between tall and dwarf plant was performed and 120 offspring were produced in which 90 plants were tall and 30 were dwarf. Find out the genotype of their parents.
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Explanation
NCERT Page No. 73
From diagram of Monohybrid cross on page no.73
A cross between tall pea plant and its recessive parent is known as
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Explanation
NCERT Page No. 74
What will be the genotype of parental plants if they produced 25 AA : 48 Aa : 26 aa
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Explanation
NCERT Page No. 74
Given ratio is 25 AA : 48 Aa : 26 aa equivalent to 1 : 2 : 1 which is a genotypic ratio of monohybrid cross.
Thus parental genotype will be – Aa x Aa.
Which of the following was not explainedby the Mendel’s law of dominance?
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Explanation
NCERT Page No. 75
Who was the first to use statistical analysis and mathematical logics for solving biological problems?
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NCERT Page No. 70
If F2 dwarf plants were self-pollinated then the genotype of F3 & F4 plants is
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