DNA, alleles, genes and chromosones

DNA

Deoxyribonucleic acid. A molecule that carries genetic information and makes up chromosomes

Chromosones

A strand of DNA and stabilizing proteins condensed into a threadlike structure

Genes

A unit of heredity, a sequence of DNA that codes for a protein

Allele

A variant of a gene

What is neuclotides made up of?

sugar, phosphate, and a base

Four types of bases

Adenine, Thymine, Cytosine, Guanine

Homologous chromosomes

pairs of chromosomes containing the same genes, one from each parent.

Diploid

having two sets of chromosomes in a cell

Haploid

having one set of chromosomes in a cell

Heterozygous

Different copies of a gene

Homozygous

the same copies for a gene

Locus

the same position on homologous chromosomes