Genetic Crosses and Disorders

Genotype=

The combination of genes you inherit for a specific characteristic

Phenotype=

The observable appearance of a characteristic

Dominant=

Type of allele: will result in the characteristic being expressed whether you have 1 or two copies of the allele

Recessive=

Type of allele: will only result in the characteristic being expressed if you have both copies of the allele

Gametes=

Sex cells

Homozygous=

Two of the same alleles of a gene

Heterozygous=

Two different alleles of a gene

Cystic Fibrosis=

A recessive disease

Sickle Cell Anaemia=

A co-dominant disese

Cystic fibrosis cause=

The body produces lots of thick sticky mucus which blocks the air passages, gut and pancreas

Sickle Cell Anaemia Cause=

Red blood cells are sickle shaped and block capillaries

Cystic fibrosis symptoms=

Breathing difficulties, lung infections, malnutrition, infertility

Sickle cell anaemia symptoms=

Tiredness, painful joints and muscles, fever, anaemia, jaundice