Gamete — Science definition

Defined in 3 courses:

Where it is taught

In use

A body cell with chromosomes in pairs is diploid; a gamete with one chromosome from each pair is haploid.

Meiosis, Gametes & Genetic Variation

That something is meiosis, a special kind of cell division that produces gametes — sperm and egg cells.

Meiosis & Sexual Reproduction

Questions using gamete

Problem 1

Why is reduction relevant before gamete fusion?
Answer and explanation

It permits the paired set to be restored rather than repeatedly doubling the set across generations in this model.

Problem 2

Illustrative species has eight chromosomes in a diploid body cell, arranged in four pairs. Normal gametes form and two fuse. Find gamete and zygote counts and explain how different gametes can carry different combinations.
Answer and explanation

Each modeled gamete has four chromosomes; fusion yields a zygote with eight. Different pair distributions and exchanges can produce varied combinations despite equal counts. Equal chromosome count does not imply identical allele versions. The conclusion assumes the stipulated normal diploid life cycle, not every organism’s reproductive arrangement.

Divide the paired set into one per pair: four.

Combine two gamete sets: four plus four equals eight.

Connect distributions with varied inherited combinations.

Response criteria

  • Explain the relevant biological process accurately.
  • Use the supplied evidence and show calculation steps with units where needed.
  • Connect a labeled model or mechanism with the claim.
  • State an assumption, evidence limitation, or useful next observation.

Problem 3

A diagram gives an eight-chromosome species eight in each gamete and sixteen in the zygote. What missing process should be examined?
Answer and explanation

The diagram omitted chromosome-set reduction during meiosis in the stated diploid model. Normal gametes should have four and the zygote eight.

Response criteria

  • Explain the relevant biological process accurately.
  • Use the supplied evidence and show calculation steps with units where needed.
  • Connect a labeled model or mechanism with the claim.
  • State an assumption, evidence limitation, or useful next observation.

Problem 4

Which set belongs to a normal gamete of the fictional six-chromosome diploid species?
  1. Six paired chromosomes
  2. Three, one from each pair
  3. Twelve
  4. No genetic material
Answer and explanation

Three, one from each pair

Reduction gives three chromosomes, one representative of each modeled pair.

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