JAMB 2019 Biology · Question 5

Inheritable character/features possessed by an organism can be referred to as

Options

  1. A.Genes
  2. B.Locus
  3. C.Traits
  4. D.Allelo morphs

Answer: C. Traits

Explanation written with AI and checked against the answer key

1. Analyze the question The question asks for the term used for inheritable characters or features that an organism possesses, such as height, eye colour, or blood group.

2. Explain the concepts

  • Gene: A segment of DNA that carries the instructions for a character. It is the unit of inheritance, not the feature itself.
  • Locus: The specific position of a gene on a chromosome.
  • Trait: An observable, inheritable character or feature of an organism, such as tallness or flower colour.
  • Allelomorph (allele): One of the alternative forms of a gene at the same locus, for example T for tall and t for short.

3. Step-by-step solution

  • Genes are the factors that determine characters, but they are not the characters themselves. So A is out.
  • Locus refers to the position of a gene. So B is out.
  • Allelomorphs are the alternative forms of a gene. So D is out.
  • Traits are the inheritable features an organism displays, such as skin colour or height. This matches the question exactly.

4. Answer The correct option is C. Traits.

5. Exam tip Link each term to what it describes:

  • Gene = the instruction
  • Locus = the location
  • Allele = the alternative version
  • Trait = the visible feature

If a question says "character" or "feature", think trait.

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