Huntington's disease is a fatal disorder characterized by a progressive deterioration of the nervous system. The symptoms of this disease usually begin to develop in middle age. It is caused by a dominant allele (H). A man heterogeneous for the Huntington's allele marries a woman who has the homologous recessive phenotype. They plan to have children. What is the probability that they will have a child who develops Huntington's disease in later life?

as in mitosis, dna replication occurs during interphase.   in meiosis, it occurs specifically in s phase of interphase 1.

examples of nucleic acids are deoxyribonucleic acid (dna) and ribonucleic acid (rna).

protistas excret ethanol used in the manufacture of vinegar

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.