Genetics New Flashcards
How to do punnet square full
Characteristic Key Pheno Geno Meiosis Gametes Fert Square Pheno Geno
Mendels law of dominance
In a cross of parents that are pure for contrasting traits only the dominant trait will appear.
Mendels law of segregation
The characteristics of an organism are controlled by pairs of alleles which separate into different gametes due to meiosis
Mendels law of independent assortment
Different allele pairs separate independently of each other during the formation of gametes.
Therefore they transfer separately
Albinism
From the absence of skin pigmentation
Autosomal
Alleles
Two alternative forms of a gene at the same locus
Co dominance
Both alleles equal and express equally in the phenotype
Complete dominance
Dominant allele masks the recessive allele in heterozygous
Incomplete dominance
Combine to create and intermediate phenotype of a given trait
Gene
A segment of dna that codes for a particular characteristic
Gene mutation
Small localised changes in the structure of dna
Genotype
Total genetic composition of an organism
Genome
Complete set of chromosomes in cell of org
Haemophilia
Excessive bleeding and lack of blood clotting
Sex linked
Cystic fibrosis
Excessive Thick mucus excreted in lungs and pancreas
Autosomal
