Help
Options
Didn't know it?
click below
click below
Knew it?
click below
click below
Don't Know
Remaining cards (0)
Know
retry
shuffle
restart
0:00
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.
Normal Size Small Size show me how
Normal Size Small Size show me how
Chapter 9
Genetics
| Term | Definition |
|---|---|
| heredity | the transmission of characteristics from parents to offspring |
| trait | a genetically determined variant of a characteristic |
| pollination | when male reproductive parts of a flower (anthers) are transferred to the female reproductive part |
| self-pollination | when pollen is transferred from the anthers of a flower to the stigma of either that flower or another flower on the same plant |
| cross pollination | when plants reproduce between other plants |
| true breeding | when a trait always produces offspring that have the same trait when they self-pollinate |
| p generation | the breeding of the parents |
| F1 generation | the breeding of the offspring of the p generation |
| f2 generation | the breeding of the offspring of the f1 generation |
| dominant | a factor that dominates the other trait in a pair |
| recessive | a factor that is not dominate and is dominated by the other trait in the pair |
| law of segregation | a pair of factors is segregated, or separated, during the formation of gametes |
| law of independent assortment | factors separate independently of one another during the formation of gametes |
| molecular genetics | the study of the structure and formation of chromosomes and genes |
| allele | two or more alternative forms of a gene |
| genotype | the genetic makeup of an organism |
| phenotype | an organisms appearance |
| homozygous | when both pairs of alleles are alike |
| heterozygous | when the two alleles in the pair are different |
| probability | the likeliness that an event will occur |
| monohybrid cross | when a cross in only one characteristic is tracked |
| punnet square | a diagram that helps scientists predict the distribution of the outcomes of genetic traits |
| genotypic ratio | the ratio of genotypes that will appear in an offspring |
| phenotypic ratio | the ratio of the offsprings phenotypes |
| testcross | where an individual unknown genotype is crossed with a homozygous recessive gene |
| complete dominance | a relationship where one allele is dominant over another |
| incomplete dominance | a condition in which a trait in an individual is intermediate between the phenotype of the individual's two parents cause the dominant allele is unable to express itself |
| codominance | when both alleles are expressed in a heterozygous offspring |
| dihybrid cross | a cross where two characteristics are tracked |
Created by:
elizrhys
Popular Biology sets