20 terms

Biology Chapter 13

Selective breeding
allowing only those animals-including horses, cats, and farm animals-and most crop plants have been produced by selective breeding.
Crossing dissimilar individuals to bring together the best of both organisms
continued breeding of individuals with similar characteristics
Have many sets of chromosomes
Genetic Engineering
making changes in the DNA code of a living organism
Restriction enzymes
Used to cut DNA at specific sequence of nucleotides
Gel electrophoresis
Mixture of DNA fragments is placed at one end of a porous gel, and an electric voltage is applied to the gel. Used to compare the genomes of different organisms or different individuals
Recombinant DNA
They are produced by combining DNA from different sources
Polymerase Chain Reaction
(PCR) Allows biologist to make copies of a particular gene.
small circular DNA molecule. Found in natural bacteria and used for DNA transfer.
Genetic Marker
A gene that makes it possible to distinguish bacteria that carry the plasmid( and the foreign DNA) from those that don't
Contain genes from other organisms
Member of a population of genetically identical cells produced from a single cell.
Humans use selective breeding to...
...pass desired traits on to the next generation of organisms
Breeders can increase the genetic variation in population by...
...inducing mutations, which are the ultimate source of genetic variability
Scientist use their knowledge of the structure of DNA and its chemical properties to...
... study and change DNA molecules
Different techniques are used to...
...extract DNA from cells, to cut DNA into smaller pieces, to identify the sequence of bases in a DNA molecule, and to make unlimited copies of DNA
During transformation...
...a cell takes in DNA from outside the cell, it becomes a part of cell's DNA
If transformation is successful, the one recombinant DNA is...
...integrated into one of the chromosomes of the cell.
Genetic engineering has spurred the growth of biotechnology...
...a new industry that is changing the way we interact with the living world.