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
Ch 9 Fund of Genetic
| Term | Definition |
|---|---|
| genetics | the field of biology devoted to understanding how characteristics are transmitted from parents to offspring |
| heredity | the transmission of characteristics from parents to offspring. |
| trait | a genetically determined variant of a characteristic, such as yellow flower color |
| pollination | pollen grains from the anther (male) are transferred to the stigma (female) |
| self-pollination | when pollen is transferred the anther to the stigma of the same plant |
| cross-pollination | transfer of pollen from the anther to the stigma of different plants |
| true-breeding | pure for a trait always produce offspring with that trait when they self-pollinate |
| P generation | true-breeding parents |
| F1 generation | offspring of the P generation |
| F2 generation | offspring of the F1 generation or second generation of the P generation |
| dominant | masks or dominates the other trait |
| recessive | the trait that gets dominated or masked |
| law of segregation | a pair of factors (traits) 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 | study of the structure and function of chromosomes and genes |
| allele | alternative form of a gene (Mendel's factors) |
| genotype | an organism's genetic make up (Letters) |
| phenotype | an organism's appearance (what we see) |
| homozygous | when both alleles of a pair are alike |
| heterozygous | when both alleles of a pair are different |
| probability | the likelihood that a specific event will occur |
| monohybrid cross | a cross in which only one characteristic is tracked |
| punnett square | diagram used to predict the probable distribution of inherited traits in offspring |
| genotypic ratio | the ratio of the genotypes that appear in offspring |
| phenotypic ratio | the ratio of the offspring's phenotypes |
| testcross | an individual of an unknown genotype is crossed with a homozygous recessive individual |
| complete dominance | one allele is completely dominant over the other allele |
| incomplete dominance | heterozygous - offspring will have a phenotype in-between that of the parents. |
| codominance | when both alleles for a gene are expressed in a heterozygous offspring |
| dihybrid cross | a cross in which two characteristics are tracked |
Created by:
droesener
Popular Biology sets