Inheritance Of Genes

Question 1

Define genotype

Answer 1

Genetic make up of an individual

Question 2

Define phenotype

Answer 2

All observable characteristics of an individual or expressed trait as a result of the genetic make up of one or more specific genetic loci

Question 3

Explain how genotype phenotype and the environment are all connected

Answer 3

Environment controls the genotype and the genotype causes the phenotype. Also the environment affects the phenotype.

Environmental factors include : radiation, mutagens, diet, lifestyle and chemicals that affect cell growth

Question 4

Define gene

Answer 4

Unit of hereditary; a length of DNA on a chromosome that contains the code for a protein

Question 5

Define allele

Answer 5

Alternative form of a gene, each individual has 2 alleles for every gene, which can be the same or different

Question 6

Describe autosomal dominant

Answer 6

Heterozygotes affected.

Disease can skip generations

Question 7

Describe autosomal dominant

Answer 7

Heterozygotes affected
Disease rarely found in homozygous state
Can’t skip generations

Question 8

What has maternal lineage

Answer 8

Mitochondria