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Genetics - Some Basic Fundamentals · ICSE STD 10 (ICSE - English Medium). 2 questions.

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Question 14 Marks
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Answer
(a) - 3 (Parental Generation - True-breeding plants with contrasting traits.)
(b) -1 (F1 Generation - All offspring show the dominant trait.)
(c) - 2 (F2 Generation - Phenotypic ratio is 3:1 (dominant).)
(d) -4 (Gametes - Carry only one allele for each trait.)
(e) -5 (Dominant Allele - Trait that appears in the F1 generation.)
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Question 24 Marks
Column AColumn B
(i) Genetics(A) Chromosomes similar in size and shape.
(ii) Autosomes(B) The alternative forms of genes.
(iii) Recessive genes(C) Study of laws of inheritance of characters.
(iv) Allele(D) A gene that can express only when in a similar pair.
 (E) Chromosomes other than the pair of sex chromosomes.
Answer
(i) - (C), (ii) - (E), (iii) - (D), (iv) - (B)
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