In humans, gene A is paternally imprinted. The paternal copy of the gene is methylated and not expressed. While we know the genotypes and phenotypes of the parents, we do not know the phenotypes of the children (Yeah, I know...weird). We also do not know from which grandparents the parents inherited their alleles. (But then again....can you determine this?). * denotes the alleles inherited from their father. A = wild-type (dominant); a mutant (recessive) Family 1 Family 2 Aa Aa Aa Aa 1 2 3 4 1 2 3 4 A'a Aa' aa' AA' A'a Aa' aa' AA' Answer the following questions based on the pedigrees: What is the phenotype of individual 1 in family 1: а. b. What is the phenotype of individual 2 in family 1: с. What is the phenotype of individual 1 in family 2: d. What is the phenotype of individual 2 in family 2: e. What will be the genotypic and phenotypic ratios of the offspring of a cross between individual 2 of family 1 and individual 1 of family 2?

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Nucleotides

It is an organic molecule made up of three basic components- a nitrogenous base, phosphate,and pentose sugar. The nucleotides are important for metabolic reactions andthe formation of DNA (deoxyribonucleic acid) and RNA (ribonucleic acid). 

Nucleic Acids

Nucleic acids are essential biomolecules present in prokaryotic and eukaryotic cells and viruses. They carry the genetic information for the synthesis of proteins and cellular replication. The nucleic acids are of two types: deoxyribonucleic acid (DNA) and ribonucleic acid (RNA). The structure of all proteins and ultimately every biomolecule and cellular component is a product of information encoded in the sequence of nucleic acids. Parts of a DNA molecule containing the information needed to synthesize a protein or an RNA are genes. Nucleic acids can store and transmit genetic information from one generation to the next, fundamental to any life form.