Inheritance of Different in Prokaryotes Mutations arise, move from donors to recipients, incorporated to recipients through recombination Transposition: some genes are mobile and can be transferred to another site, and then another host Transformation: the conversion of the heredity type of a cell by the uptake of DNA released by the breakdown of another cell…
Random change Key factors that can cause evolution: –Small populations are more variable to changes in allele frequencies -non-random mating opportunities result in only those “preferred” traits being passed onto future populations –new alleles may be created when mutations occur (changes the frequencies of new and original alleles) -migration causes changes in the relative abundance…
Evolution describes the changes in the gene pool of a species over time. These changes are the results of mutations, natural selection and genetic drift. Often populations produce more offspring than the environment can support; in other words, they often exceed the carrying capacity. Over-production of offspring leads to intraspecific competition and survival of the…
Mutations are errors made in the DNA sequence than can have negative side effects, no effect, or positive effects for an organism Point Mutations Mutations that occur at a certain point in the DNA Substitution – the replacement of one base in a DNA sequence by another base Deletion – the elimination of a base…
Mutations – any change in a gene that is accompanied by a loss or change in the functioning of the genetic information; many mutations are harmful – spontaneous mutations have no known cause; improper crossing over, DNA replication – induced mutations are caused by mutagens; radiation, chemicals, viruses Somatic Mutations – occur in regular body…