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JKCET Genetic Terminology — practice questions

Explore 3 free Genetic Terminology questions in JKCET Biology. Open each question or exercise to read its content, reference answers and available explanation.

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Genetic Terminology questions and exercises with answers

Showing questions 1–3 of 3.

An **allele** is best defined as:Read the answer and worked solution →An individual with the genotype **Tt** is described as:Read the answer and worked solution →Spot the trait Mendel never usedRead the answer and worked solution →

Worked practice questions

An **allele** is best defined as:

  1. A pair of homologous chromosomes
  2. An alternative form of a gene occupying the same locus on a homologous chromosome
  3. A complete set of genes from one parent
  4. A type of gamete cell
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Correct answer: B. An alternative form of a gene occupying the same locus on a homologous chromosome

Alleles (or allelomorphs) are two or more alternative forms of a given gene located at identical positions (loci) on homologous chromosomes — e.g. T and t for plant height.

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An individual with the genotype **Tt** is described as:

  1. Homozygous
  2. Heterozygous (hybrid)
  3. Pure
  4. Recessive
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Correct answer: B. Heterozygous (hybrid)

Tt has two different alleles — heterozygous (also called hybrid). It does not breed true and produces two types of gametes (T and t). TT or tt would be homozygous.

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Spot the trait Mendel never used

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Questions
  1. Items
    1. Seed shape
    2. Leaf size
    3. Pod colour
    4. Flower position
    Odd item
    Leaf size
  2. Items
    1. Plant height
    2. Seed colour
    3. Root depth
    4. Pod shape
    Odd item
    Root depth
  3. Items
    1. Flower colour
    2. Pod colour
    3. Seed shape
    4. Stem thickness
    Odd item
    Stem thickness
Instructions
Three traits in each row are ones Mendel followed in his pea plants. Tap the fourth.
_Source: Qallery verified question bank, MHT CET, topic Inheritance and Variation_

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More Biology topics

Molecular Basis of InheritanceSexual Reproduction in Flowering PlantsHuman ReproductionCell Cycle and Cell DivisionPrinciples of Inheritance and VariationPrinciples Of InheritanceReproductive HealthHuman Health and Disease