AQA GCSE Combined Science: Trilogy (8464) — Biology — Foundation · 4.1.2.1

Chromosomes Flashcards – AQA GCSE Combined Science: Trilogy (8464) — Biology — Foundation

Revise AQA GCSE Combined Science: Trilogy (8464) — Biology — Foundation specification point 4.1.2.1, Chromosomes, with free active-recall flashcards. Flip through the set or review every question and answer below.

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Cards in this set (9)

What is a haploid nucleus?

A nucleus with one set of chromosomes, containing one chromosome of each type.

What is a diploid nucleus?

A nucleus with two sets of chromosomes, containing a pair of each type.

How many chromosome pairs and total chromosomes are in a human diploid cell?

23 pairs, or 46 chromosomes in total.

Does the haploid–diploid distinction depend on whether chromosomes contain genes?

No. It concerns the number of chromosome sets in a nucleus.

What are chromosomes made of?

DNA.

What do chromosomes carry?

Genetic information.

What is a gene?

A length of DNA that codes for a protein.

Where are genes located in chromosomes?

They are parts of the DNA in chromosomes.

What is an allele?

An alternative form of a gene.