For my muddiest point i am having trouble remembering which are dihybrid, incomplete and co-dominance problems. If anyone has any ideas to help me remember which is which that would be great. Thanks!
A cross that is called codominance is when there is no dominant or recessive allele. Both alleles are shown in the offspring. For example when you cross a Red cow (RR) with a White cow (WW) then the offsprings are RW and their phenotype is roan coats because there are both Red and White hairs on the cow. A cross that is called incomplete dominance is when if both the dominant and recessive allele is the genotype for the offspring then the alleles are "blended" together to form a different phenotype. For example when a Japanese 4-o'clock flower that is red (RR) is crossed with a white (WW) flower than the offsprings' phenotype are pink. A dihybrid cross is when you have to "foil" the parents genotype. For specific details you can look at UP 33. Here's a super short example. But I thought this might help. http://facweb.msjnet.edu/pabrahms/dihybrid_genetic_crosses.htm
A cross that is called codominance is when there is no dominant or recessive allele. Both alleles are shown in the offspring. For example when you cross a Red cow (RR) with a White cow (WW) then the offsprings are RW and their phenotype is roan coats because there are both Red and White hairs on the cow.
ReplyDeleteA cross that is called incomplete dominance is when if both the dominant and recessive allele is the genotype for the offspring then the alleles are "blended" together to form a different phenotype. For example when a Japanese 4-o'clock flower that is red (RR) is crossed with a white (WW) flower than the offsprings' phenotype are pink.
A dihybrid cross is when you have to "foil" the parents genotype. For specific details you can look at UP 33. Here's a super short example. But I thought this might help. http://facweb.msjnet.edu/pabrahms/dihybrid_genetic_crosses.htm