Dna, Genes And Chromosomes

Question 1

What is dna like in prokaryotic cells

Answer 1

DNA molecules are short
Circular
Not associated with proteins

Question 2

What is dna like in eukaryotic cells

Answer 2

DNA molecules are very long
Linear
Associated with histones

Question 3

What is dna like in mitochondria and chromosomes

Answer 3

Short
Circular
Not associated with protein

Question 4

What is a gene

Answer 4

A base sequence of dna that codes for an amino acid sequence of a polypeptide and a functional rna

Question 5

What is the name for the fixed position of a gene on a dna molecule

Answer 5

Loci

Question 6

What is a triple

Answer 6

A sequence of 3 dna bases that codes for a specific amino acid

Question 7

What are 3 features of the genetic code

Answer 7

Universal
Non overlapping
Degenerate

Question 8

Define universal

Answer 8

Same codon codes for the same amino acid in all organisms

Question 9

Define non overlapping

Answer 9

Each base is only part of one cododn

Question 10

Define degenerate

Answer 10

More than one codon can code for the same amino acid

Question 11

What is an intron

Answer 11

Non coding sequences of dna

Question 12

What is an exon

Answer 12

Coding amino acid sequences of DNA