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Test: Genetics - 2 - Year 10 MCQ


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3 Questions MCQ Test - Test: Genetics - 2

Test: Genetics - 2 for Year 10 2025 is part of Year 10 preparation. The Test: Genetics - 2 questions and answers have been prepared according to the Year 10 exam syllabus.The Test: Genetics - 2 MCQs are made for Year 10 2025 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Test: Genetics - 2 below.
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Test: Genetics - 2 - Question 1
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Considering tallness and dwarfness, tallness is more wide spread among pea plants because :-

Detailed Solution for Test: Genetics - 2 - Question 1

Explanation:

  • Most likely explanation for tallness being more widespread among pea plants is that tallness is dominant over dwarfness.
  • This means that even if a pea plant inherits the dwarf allele from one parent, it can still exhibit the tall phenotype if it inherits the tall allele from the other parent.
Test: Genetics - 2 - Question 2
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Genotype means :-

Detailed Solution for Test: Genetics - 2 - Question 2

The genotype of an organism is the chemical composition of its DNA, which gives rise to the phenotype, or observable traits of an organism. A genotype consists of all the nucleic acids present in a DNA molecule that code for a particular trait

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Test: Genetics - 2 - Question 3
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If a heterozygous tall palnt is crossed with a homozygous dwarf palnt, the proportion of dwarf progeny will:-

Detailed Solution for Test: Genetics - 2 - Question 3

To determine the proportion of dwarf progeny, let's analyze the cross between a heterozygous tall plant (Tt) and a homozygous dwarf plant (tt).
Genotype of tall plant: Tt
Genotype of dwarf plant: tt
When these two plants are crossed, the possible genotypes of the progeny are as follows:
1. Tt (tall)
2. Tt (tall)
3. tt (dwarf)
4. tt (dwarf)
From these genotypes, we can see that 2 out of 4 possible genotypes (50%) will result in dwarf progeny.
Therefore, the proportion of dwarf progeny is 50% (option A).
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Genetics - 2 MCQs with Answers

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