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Home › Biology › Genetics - Terminology

Genetics - Terminology — Biology Questions & Practice

Practise 29 Genetics - Terminology questions from Biology for competitive exams such as UPSC, Banking, SSC and Railway. Read the worked questions below, check every answer with an explanation, and track what you get wrong.

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Practice questions on Genetics - Terminology — with answers

Try each question first, then open the answer. Explanations are included.

1. What does the genetics term 'Genotype' refer to?

  1. Athe second filial generation, resulting from self-pollination or crossing of the F1 generation
  2. Bthe genetic (allelic) makeup of an organism for a particular trait
  3. Chaving two identical alleles for a particular gene
  4. Dhaving two different alleles for a particular gene
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Answer: B

'Genotype' refers to the genetic (allelic) makeup of an organism for a particular trait.

2. Which genetics term refers to the genetic (allelic) makeup of an organism for a particular trait?

  1. ACodominance
  2. BF1 generation
  3. CRecessive allele
  4. DGenotype
Show answer

Answer: D

'Genotype' refers to the genetic (allelic) makeup of an organism for a particular trait.

3. What does the genetics term 'Phenotype' refer to?

  1. Aa condition where both alleles in a heterozygote are fully and separately expressed
  2. Bthe observable physical or biochemical characteristics of an organism
  3. Ca strain of organisms that always produces offspring with the same phenotype when self-crossed
  4. Dan alternative form of a gene that arises by mutation, found at the same locus
Show answer

Answer: B

'Phenotype' refers to the observable physical or biochemical characteristics of an organism.

4. Which genetics term refers to the observable physical or biochemical characteristics of an organism?

  1. ACodominance
  2. BTest cross
  3. CPure-breeding (true-breeding) line
  4. DPhenotype
Show answer

Answer: D

'Phenotype' refers to the observable physical or biochemical characteristics of an organism.

5. Which genetics term refers to an alternative form of a gene that arises by mutation, found at the same locus?

  1. AAllele
  2. BGenotype
  3. CF2 generation
  4. DChromosome
Show answer

Answer: A

'Allele' refers to an alternative form of a gene that arises by mutation, found at the same locus.

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