Incomplete and Co dominance Incomplete Dominance So far
- Slides: 17
Incomplete and Co dominance
Incomplete Dominance So far according to Mendel's rules. . .
Genes have two options (aka alleles): dominant and recessive. Dominant traits always outweigh or mask the recessive traits. Phenotype (outward appearance) is only dominant or recessive.
Incomplete dominance is where neither allele is dominant over the other, thus they blend their traits and produce a third phenotype RED Flower x WHITE Flower ---> PINK Flower
In snapdragons, inheritance is expressed with incomplete dominance. Homozygous dominant flowers are red (RR) and homozygous recessive flowers are white (WW), but the heterozygote (RW) is a blend of dominant and recessive or in this case
Incomplete Dominance
The trick is to recognize when you are dealing with a question involving incomplete dominance. There are two steps to this: 1) Notice that the offspring is showing a 3 rd phenotype. The parents each have one, and the offspring are different from the parents. 2) Notice that the trait in the offspring is a blend (mixing) of the parental traits.
Co = together Coexist = exist together Cocaptain = captain together Cohabitate = live together Coed=educated together Coauthor=wrote together Codominance=dominant together
Codominance With codominance, a cross between organisms with two different phenotypes produces offspring with a third phenotype in which both of the parental traits appear together.
I remember co dominance in the form of an example like so: red x white ---> red & white spotted
In cattle the red and white shown together is called Roan
F
Codominance Example in Appaloosa Horses
Codominance example: Erminette Chickens Erminette chickens black, but not grey.
BB = black feathers BW = black and white feathers WW = white feathers
- Future painted with fog figure of speech
- The map of the world in the classroom symbolises
- In a kingdom far far away
- Far far away city
- Codominant allele
- Difference between complete and incomplete dominance
- Incomplete dominance horse
- Incomplete dominance traits in humans
- Define pleiotropic gene
- Incomplete dominance punnett square
- What is incomplete dominance? *
- Incomplete dominance
- When neither allele is dominant
- Incomplete dominance definition
- Codominance and multiple alleles
- Define erminette
- Incomplete dominance punnett square
- Incomplete dominance in snapdragons