Codominance

Codominance 

Codominance is a pattern in Non-Mendilian genetics. It is when no single allele is dominant over the other, both are present at the same time. 

• There are two dominant alleles, neither allele over powers the other
• Both alleles will be capital letters 
• Alleles can be represented as primes or letters. Ex: Black fur on a cat and White fur on a cat. They are both dominant but you can choose the alleles as being BW or BB' 
• Codominance shows a combination of both of the traits like spotted, stripped, checkered, etc.

Example Chart: 

 

In this objective I learned that there is a way of having an offspring without having a recessive gene with both dominants present. This topic isn't very hard to pick up especially after understanding punnett square rules and how the different alleles show if the offspring with will be black and white or red and blue. This is used on a day to day bases when scientists to determine the phenotype (physical trait) of an organism. There are many different ways the genotypes in a punnett square can aline to determine traits and it is interesting to see all the possible outcomes.

Citations: http://www.hobart.k12.in.us/jkousen/Biology/inccodom.htm, https://docs.google.com/presentation/d/1FLlmYWIKJqL2gnhXSDpcmQSRTVVudvZmrdj5Z4ZwhxE/edit#slide=id.g1396925b46_0_304