Inheritance Flashcards
What is DNA
deoxyribonucleic acid, polymer made up of two strands coiled around to make a double helix
What is gene
Each gene is made up of a small section of DNA
They are the basic unit of hereditary
What is chromosome
A chromosome is made of a single polymer of DNA containing a number of genes
Chromosomes are homologous (matched in pairs)
23 pairs
Chromosomes for gender
Female X/X
Male X/Y
Diploid vs haploid
Diploid - (somatic cell) 46 chromosomes 23 pairs
Haploid (sex cell) 23 chromosomes in total
Somatic meaning body
Heterozygous vs homozygous
Heterozygous is one allele more dominant (Tt)
Homozygous is both alleles is either recessive (tt) (pure breeding) or dominant (TT)
Genotype
What alleles u have eg. (Tt)
Phenotype
What your characteristics are (brown eyes)