6.1.2 Cellular control

Question 1

Exon

Answer 1

The coding, or expressed, region of DNA

Question 2

Intron

Answer 2

The non-coding region of DNA

Question 3

Operon

Answer 3

A group of genes that function as a single transcription unit; first identified in prokaryote cells
Lac Operon is 6000 base pairs long

Question 4

Transcription factor

Answer 4

Protein or short non-coding RNA that can combine with a specific site on a length of DNA and inhibit or activate transcription of the gene

Question 5

Apoptosis

Answer 5

Programmed cell death

Question 6

Conserved

Answer 6

Has remained in all descendent species throughout evolutionary history

Question 7

Homeobox sequence

Answer 7

Sequence of 180 base pairs (excluding introns) found within genes the are involved in regulating patterns of anatomical development in animals, fungi and plants

Question 8

Hox genes

Answer 8

Subset of homeobox genes, found only in animals; in formation of anatomical features in correct locations of body plan