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
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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.