compound consisting of nucleoside linked to phosphate group.

relating to genes or heredity.

Used to add new (often different) information.

person that carries. People with a disease who gives it to another.

having two different alleles of particular gene or genes.

make statement or situation less confused and more comprehensible.

not to be relied on or trusted. person thought to be guilty of crime or offence. To consider someone is the one guilty of a crime.

connected with something else. To form a connection in your mind between things.

give detailed account in words of.

Not of the same kind; unlike other things.

character representing speech sound. Messages you put in an envelope and send by post. inscribe letters on.

substance produced by living organism which acts as catalyst to bring about specific biochemical reaction. Substance in living things helping chemical change.

change or slight difference in condition, amount, or level. Some things almost the same as another but different.

achieved or maintained by careful and deliberate effort. To focus on learning something usually at school.

action or process of mutating. Change that changes genetic structure.