Why do you think deleterious dominant alleles are not very common?

A dominant allele can be described as the one which suppresses the effect of a recessive allele.

A deleterious allele is an allele which causes a decrease in fitness for a species as compared to the other allele form for the gene. A deleterious allele might be present often in a species but it might get masked due to the effect of the other allele. Due to this, a deleterious allele is mostly a recessive one. However, there can be some deleterious alleles which are dominant.

organ system-an organ system is a group of organs that work together to perform one or more functions. each does a particular job in the body, and is made up of certain tissues.

1. amino acid refers to the fundamental building block of proteins, comprising of an amino group and a carboxyl group.

2. catalyst refers to any substance, which increases the rate of chemical reaction without being used up in the reaction.

3. a complex molecule containing he genetic code is dna or deoxyribonucleic acid.

4. an enzyme refers to a molecule of protein, which is unique in accelerating up a particular chemical reaction in the biological systems.

5. nucleic acid refers to an sequence of sugars, phosphates, and nitrogenous bases, for example, dna and rna.

6. a protein refers to a large, composite organic molecule comprising of a huge number of amino acids associated together with the of peptide bonds.

7. rna refers to a nucleic acid that takes part in the production of proteins.

8. substrate refers to a compound, which takes part in a chemical reaction, and is chemically modified by the reaction.