Few quick questions
-Difference between mhc markers, class 1 and 2, something about red blood cells too? Can someone clarify this
-In gel electrophoresis, the way the dna moves is towards the positive end yea?
-difference between dna sequencing and dna profiling?
-if a dihybrid test cross comes out as 1:1:1:1, does that mean it is not linked, and that they assort independently?
-how to tell the difference between polygenes and codominance?
-Also, im sorta confused about test crosses, say we need to determine whether the trait is hetero or homo, do we make two crosses both crossed with a recessive homo?
Thank you and good luck everyone!!
MHC 1 markers are on all cells with an nucleus. Red blood cells don't have a nucleus therefore do not have MHC1 markers.
MHC 2 markers are only found on white blood cells, macrophages, b cells, t cells etc.
Yes dna is negatively charged and move towards the positive terminal when a electric current is applied.
Nope, if there is a 1:1:1:1 raio,it can suggest both independent assort or sex linked. However you can tell its linked, if the almost all the % of offspring have the parental gene and only a few who have the recombinant ones. You can also tell if its indepdently assorted when the proportion of offspring are all equal in number.
Well, co-dominant is when both alleles are equally expressed so for example, iAiB, making a AB blood type. Polygenes are when when traits are controlled by two or more genes. Really two different concepts
Test cross is used to determine whether the indivdual is heterozygous or homozygous by crossing it with a homozygous recessive. You only cross once, if u perform a test cross on a homozygous dominant, you'll know it isnt heterozygous based on the proportion of offsprings.