Genetics

By Asiel

DNA and RNA

To understand how the atoms of DNA are linked together by covalent bonds and how the resulting molecules are arranged in three-dimensional space. RNA is principally found as a single-stranded molecule.

Heredity/ Traits

Heredity is passing of mental or physical characteristics genetically from generation to another. A trait is genetically determined characteristic. An example of heredity would be a parent passing down poor eye sight to his or her kid. An example of a trait would be a boy having blue eyes. In humans, dark hair is a dominant trait; if one parent contributes a gene for dark hair and the other contributes a gene for light hair, the child will have dark hair.
  1. Recessive traits can be carried in a person's genes without appearing in that person. For example, a dark-haired person may have one gene for dark hair, which is a dominant trait, and one gene for light hair, which is recessive.




Gamates/ Haploid and Diploid/ Mendel and Watson and Crick/ Mutations

Gamete is a mature haploid male or female germ cell that is able to unite with another of the opposite sex in sexual reproduction to form a zygote. Diploid cells contain two complete sets (2n) of chromosomes. Haploid cells have half the number of chromosomes (n) as diploid - i.e. a haploid cell contains only one complete set of chromosomes. Gregor Mendel was the fouder of the modern science of genetics. Francis Harry Compton Crick, OM, FRS was a British molecular biologist, biophysicist, and neuroscientist, most noted for being a co-discoverer of the structure of the DNA molecule in 1953 with James Watson. Mutation; the changing of the structure of a gene, resulting in a variant form that may be transmitted to subsequent generations, caused by the alteration of single base units in DNA. Substitution, Insertion, and Deletion are 3 examples of mutation.