Inheritance- 7

Question 1

Genotype

Answer 1

The genetic constitution of an organism (the alleles it has for a gene)

Question 2

Phenotype

Answer 2

the expression of the genes and its interaction with the environment.

Question 3

Homozygous

Answer 3

A pair of homologous chromosomes carrying the same alleles for a single gene.

Question 4

Heterozygous

Answer 4

A pair of homologous chromosomes carrying two different alleles for a single gene.

Question 5

Recessive allele

Answer 5

An allele only expressed if no dominant allele is present.

Question 6

Dominant allele

Answer 6

An allele that will always be expressed in the phenotype.

Question 7

Codominant

Answer 7

Both alleles are equally dominant and expressed in the phenotype.

Question 8

sex-linkage

Answer 8

A gene whose locus is on the sex-chromosome- 23rd pair.

Question 9

Autosomal linkage

Answer 9

Genes that are located on the same chromosome but not the sex-chromosome.

Question 10

Epistasis

Answer 10

When one gene modifies or masks the expression of a different gene at a different locus.