B1 Key Words
Inherited - A feature that is passed from parents to their offspring through genes.
Environment - Everything that surrounds you. This is factors like the air, the Earth, and the water as well as other living things.
Nucleus - The part of the cell that holds all of the information.
Chromosomes - Long, thin, thread-like structures in the nucleus of a cell made from a molecule of DNA. Chromosomes carry the genes.
Structural - Used to build something. For example, structural proteins which make everything in the body.
DNA - Deoxyribonucleic acid. The chemical that makes up chromosomes. DNA carries the genetic code, which controls how an organism develops.
Protein - Chemicals in living things that are polymers made by joining together amino acids.
Genes - A section of DNA giving the instructions for a cell about how to make one kind of protein.
Enzymes - A protein that catalyses (speeds up) chemical reactions in living things.
Huntingdon's Disorder - An inherited disease of the nervous system. The symptoms do not show up until middle age.
Sex Cells - Cells produced by males and females for reproduction - egg cells and sperm cells. Sex cells carry a copy of the parent's genetic information. They join together at fertilisation.
23 Pairs - Human body cells have 23 pairs of chromosomes in the nucleus.
Alleles - Different versions of the same gene.
Dominant - Describes an allele that will show up in an…