Genes

Question 1

What does a gene consist of?

Answer 1

A gene consists of a unique sequence of nucleotides that codes for a functional protein of an RNA molecule.

Question 2

What does the protein, RNA, determine?

Answer 2

These proteins will determine a particular characteristic/trait (eg height, skin colour) or function (eg structural protein or enzyme).

Question 3

Why is a gene considered ‘double-stranded’?

Answer 3

A gene is considered double stranded - template strand and coding strand of a gene.

Question 4

What are homologous chromosome pairs?

Answer 4

Homologous pairs have the same band sequence (same genes in the same location, but different alleles/versions of the genes.

Question 5

What are homologous chromosome pairs composed of?

Answer 5

Homologous pairs are composed of ONE paternal gene (inherited from dad) and SECOND maternal gene (inherited from mum).

Question 6

What are the coding sections on genes?

Answer 6

Exons

Question 7

What are the non-coding sections on genes?

Answer 7

Introns

Question 8

Which is translated, exons or introns?

Answer 8

Exons