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A structure formed of a very long piece of DNA, usually tightly wound together. Human chromosome 1 nearly has 3000 genes.
A series of three bases that acts as an instruction to add a particular amino acid to a growing polypeptide chain.
(deoxyribonucleic acid) the genetic instruction of all cellular organisms that determines biological characteristics.
The presence of a dominant allele means that its trait will be expressed. It is represented by a capital letter.
Used to predict the outcomes of a cross. The top row has the possible genotypes of gametes from the one parent, and in the left column, the gametes from the other.
The trait coded by the recessive allele will not be seen unless there are no dominant alleles in the genotype. They are represented by a lower case letter.
In the presence of various enzymes a gene's DNA is unwound and the strands separated, and another type of nucleic acid, RNA is produced.
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