what is genetics?
Genetic Term Definition
Gene length of DNA that codes for the production of a particular polypeptide
Allele one of the different forms of a gene which occupy the same locus on homologous chromosomes
Locus the position on a chromosome at which a particular gene is found
Phenotype a persons observable characteristics, resulting from an interaction between its genotype and the environment
Genotype genetic make up of an organism.all the alleles that the nucleus of a human cell contains. (homologous and heterozygous)
Dominant always shows it effect on the phenotype
What is genetics continued....
Recessive shows its effect on the phenotype only when the dominant allele is absent
Autosomes all chromosomes except sex chromosomes (X and Y)
Homologous two chromosomes which contain the same genes but may contain different alleles
Heterozygous having two different alleles of a gene
Homozygous having two identical alleles of a gene
Haploid cells or organisms have only one copy of each gene and chromosome
Diploid organisms inherit two copies of each gene and chromosome
Mutation is a change in the nucleotide sequence of genetic material caused by copying errors during replication that further lead to bas substitution, insertion or deletion of one or more base pairs.
Substitution point mutation, single nucleotide is substiutied with a different nucleotide that can cause an altered sequene of amino acids during translation which may cause a protein to become ineffective.
Insertion or translocation three breaks in which a segment is removed from one chromosome and then inserted into a broken region of a non homologous chromosome
Deletion chromosome abnormality in which part of a single chromosome has been lost