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S7L3.c
Heredity,selective breeding
| Term | Definition |
|---|---|
| multiple alleles | when there are more than two alleles for a specific trait |
| 3 | the number of alleles you can possibly inherit from your parents for blood type (A,B,O) |
| codominance | when dominant and recessive traits are combined in the heterozygous state and both traits are expressed at the same time |
| polygenic inheritance | when a trait is controlled by more than one gene and a variety of phenotypes are seen |
| incomplete dominance | when dominant and recessive traits are combined in the heterozygous state and result in a blending of the traits |
| incomplete dominance example | red flowers X white flowers ---> pink flowers |
| codominance example | red flowers X white flowers ---> red & white spotted flowers |
| polygenic inheritance example | eye color, skin color, height |
| hybridization | breeders cross two genetically different individuals and the organism that results has the best traits from both parents |
| artificial selection | another term for selective breeding |
| inbreeding | involves crossing two organisms that have similar characteristics (parents have same or similar sets of alleles) |
| death, infertility, genetic disorders | negative aspects of inbreeding |
| selective breeding | the process of selecting organisms with desired traits to be parents of the next generation |
| a defective gene | the science behind the incredible muscle mass in the super cows |
Created by:
janicebryan
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