Give the genotypes of each of the following blood types: A, B, O, AB. What happens when a person with type A gives blood to a per-son with type B? With type AB? With type O?
Give the genotypes of each of the following blood types: A, B, O, AB. What happens when a person with type A gives blood to a per-son with type B? With type AB? With type O?
A gene is a stretch of nucleotides present in the DNA. DNA or deoxyribonucleic acid is a polymer of deoxyribonucleotides connected together via phosphodiester bond. It holds information of structure and functions of a cell and is also transferred from one generation to the next generation.
Alleles controlling a trait can be dominant or recessive. A dominant allele is expressed in both homozygous (pair of alleles is identical on both the homologous chromosomes) and heterozygous (pair of alleles are contrasting on the two homologous chromosomes) conditions. A recessive allele can only express in the case of homozygous condition.
Any particular character of an organism that can be visualized from its outer appearance is termed as its phenotype whereas the genes controlling that character constitute its genotype.
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