Keywords

Question 1

Genome

Answer 1

All of the genetic material in an organism

Question 2

Gene

Answer 2

DNA that codes for a protein

Question 3

Chromosome

Answer 3

DNA wrapped around a histome

Question 4

Loci

Answer 4

The position of a gene on a chromosome

Question 5

Allele

Answer 5

Different versions of the same gene
Can present different characteristics- eg, eye colour

Question 6

Homologous

Answer 6

2 chromosomes with same genes at same loci
May have different alleles of the gene

Question 7

Dominant

Answer 7

Alleles that are always expressed

Question 8

Recessive

Answer 8

Requires 2 recessive alleles to be expressed

Question 9

Co-dominance

Answer 9

2 dominant alleles present
Both are expressed

Question 10

Autosome

Answer 10

The non-sex chromosomes

Question 11

Sex chromosomes

Answer 11

Chromosome 23

Question 12

Homozygous

Answer 12

2 of the same allele

Question 13

Heterozygous

Answer 13

2 different alleles

Question 14

Multiple alleles characteristics

Answer 14

Genes that have more than 2 alleles at their locus

Eg- coat colour in rabbits= one gene with four alleles

Question 15

Phenotype

Answer 15

Observable characteristics of an organism

Result from interaction between genotype and environment

Question 16

Genotype

Answer 16

The genetic constitution/make up of an organism