Dr. Gillian explained that research has identified over 25,000 genes that are responsible for the genetic information that progresses from generation to generation. These genes are:

a. telomeres which cap the chromosome.

b. located in a specific order along the axon of the neuron.

c. precise orders on an individual chromosome.

d. located with the synaptic gap between terminal button and receptor site.

I think it is either b or d but I am not too sure.

c is the best answer, the others are just totally wrong. C is only mostly wrong. Genes are not on an "individual chromosome", but are in precise order on many different chromosome.

To determine the correct answer, we need to understand the characteristics and locations of genes. Genes are sequences of DNA that contain the instructions for building and functioning of organisms. They are responsible for passing on genetic information from generation to generation.

Now let's analyze the options given:

a. Telomeres: Telomeres are protective caps at the ends of chromosomes and do not contain genes. They play a role in preserving chromosome stability but are not responsible for carrying genetic information.

b. Located in a specific order along the axon of the neuron: This option is incorrect. Genes are not located along the axons of neurons. Neurons transmit electrical signals, while genes are found within the nucleus of cells.

c. Precise orders on an individual chromosome: This option is the most accurate description. Genes are arranged in a specific order on individual chromosomes. Each gene occupies a particular location, known as a locus, on a specific chromosome.

d. Located with the synaptic gap between terminal button and receptor site: This option is incorrect. Genes are not located within the synaptic gap between the terminal button and receptor site. The synaptic gap is a tiny space between two neurons where neurotransmitters are released, and it is not where genes are found.

Based on the explanation, option c is the correct answer. Genes are located in precise orders on an individual chromosome.