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The most commonly referred to are A, B, AB and O. Others include rhesus-positive and rhesus-negative.
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Use the “A-B-O” method of blood- typing in humans to answer the questions. How many phenotypes exist for this method of blood-typing?
How many phenotypes exist for this mrthod of blood typing
Why does human height have such a wide variety of phenotypes?
i eat pancakes
What is the blood type letters found in the blood?
In humans there are two blood antigens - A and B. The absence of either antigen is referred to as O. The four possible phenotypes (genotypes) are: AB (AB), A (AA or AO), B (BB or BO) and O (O).
How differences in genotypes cause variations in phenotypes?
Phenotypes are the traits expressed by the genotype. So, for blood type, a person can have A and i alleles (genotype). However, in the phenotype, since i is recessive, only the A will be expressed, and the person will have an A blood type.
Why do human traits such as height and skin color have different phenotype?
This is because phenotypes are the physical appearance. If you had brown hair and so did I, our phenotypes, would still be different.
Who discovered the four basic human blood types?
Karl Landsteiner
How many blood groups have been discovered?
There are eight main blood types:O positive, O negative, A positive, A negative, B positive, B negative, AB positive and AB negative.Wikipedia has info- also try www.nzblood.co.nz.
You are looking at four tall pea plants What are their phenotypes and genotypes?
tall; Tt or TT
What are the four known blood types in the human body?
O, A, B, and AB
What four human groups are controlled by three alleles instead of two?
blood
If the mother is blood type A could a man of blood type O be the father of a baby with blood type AB?
Yes. It's a matter of phenotypes, not genotypes.
Why does height in humans have such a wide variety in phenotypes?
Because Height is controlled by at least four genes
