Unit one Key Area five and six

Question 1

Change affecting nucleotide(s) at a site where introns are normally removed from a primary transcript.

Answer 1

Splice-site mutation

Question 2

Physical and biochemical characteristics of an organism resulting from the expression on its genes.

Answer 2

Phenotype

Question 3

Term referring to a change in one of the base pairs in the DNA sequence of a single gene.

Answer 3

Point Mutation

Question 4

Gene mutation involving the loss of one nucleotide from the DNA sequence.

Answer 4

Deletion

Question 5

Gene mutation involving the addition of an extra nucleotide to the DNA sequence.

Answer 5

Insertion

Question 6

Individual whose genotype expressed a mutation.

Answer 6

Mutant

Question 7

Gene mutation involving the exchange of one nucleotide for another in the DNA sequence.

Answer 7

Substitution

Question 8

Sequence of DNA bases that codes for a protein.

Answer 8

Gene

Question 9

General name for a region of DNA that does not code for a protein.

Answer 9

Non-coding sequence

Question 10

General term for a random change in an organism’s genome.

Answer 10

Mutation

Question 11

An organism’s entire genetic information encoded in the DNA of a complete set of its chromosomes.

Answer 11

Genome

Question 12

Doubling up of part of a chromosome involving several genes.

Answer 12

Duplication

Question 13

General term referring to a change that alters the number or sequences of the genes in a chromosome.

Answer 13

Chromosome structure mutation

Question 14

Transfer of a segment of genes from one chromosome to another non-matching chromosome.

Answer 14

Translocation

Question 15

Loss of a segment of chromosome consisting of one or more genes.

Answer 15

Deletion

Question 16

Reversal of the gene order of a segment of chromosome as a result of two breaks in the same chromosome.

Answer 16

Inversion