5. Assume that blood type is inherited as A and B dominant over O, but A and B are codominant over each other. Genotypes (la la) and (lai) are then phenotypically type A, genotypes (le le) and
(lei) are type B, genotype (la ls) is type AB, and genotype (ii) is type O blood. A man with blood
type la la marries a woman with type AB blood. What are the genotypic and phenotypic ratios of
the children?

Genotypic ratio = 1 (IaIa) : 1 (IaIe)

Phenotypic ratio = 1 (Type A) : 1 (Type AB)

Explanation:

This question involves a single gene coding for the inheritance of blood type in humans. However, three alleles (multiple alleles) are responsible for this inheritance. Alleles ia and ie, according to the question, are dominant over alleles i.

According to this question, a man with blood type "laIa" (blood type A) marries a woman with type AB blood (IaIe). The following gametes will be produced by each parent:

IaIa - Ia and Ia

IaIe - Ia and Ie

Using these gametes in a punnet square (see attached image), the following proportion of offsprings will be produced:

2 IaIa, and 2 IaIe offsprings

Therefore,

Genotypic ratio = 1 (IaIa) : 1 (IaIe)

Phenotypic ratio = 1 (Type A) : 1 (Type AB)

To wear the full equipment.

Proteins are the workhorses of the cell, controlling virtually every reaction within as well as providing structure and serving as signals to other cells. proteins are long chains of  amino acids  , and the exact sequence of the amino acids determines the final structure and function of the protein. instructions for that sequence are encoded in  genes  . to make a particular protein, a messenger ribonucleic acid (mrna) copy is made from the gene (in the process called  transcription  ), and the mrna is transported to the  ribosome  . protein synthesis, also called  translation  , begins when the two ribosomal subunits link onto the mrna. this step, called initiation, is followed by elongation, in which successive amino acids are added to the growing chain, brought in by transfer rnas (trnas). in this step, the ribosome reads the  nucleotides  of mrna three by three, in units called  codons  , and matches each to three nucleotides on the trna, called the anticodon. finally, during termination, the ribosome unbinds from the mrna, and the  amino acid  chain goes on to be processed and folded to make the final, functional protein