Question

A functional unit in a gene is -
A) Muton
B) Recon
C) Cistron
D) Gene

Answer 1

Hint:
Chromosomes are thread-like structures in which DNA molecules are packed. It is seen in the nucleus of each cell. Each chromosome has a part of constriction at the center called the centromere.It divides the chromosome into two parts which are called arms. The short arm of the chromosome is called the “p arm.” The long arm of the chromosome is called the “q arm.” The location of the centromere characterises the shape of the chromosome.

Complete answer:
In order to solve this question, we need to know all about genes.
A gene is described as the basic physical and functional unit of heredity.
Genes consist of DNA.
Genes act as signals to form various molecules called proteins, but some genes do not form proteins.
In humans, genes size is highly variable so can consist of a few hundred DNA bases to more than 2 million bases.
The Human Genome Project guessed that human beings have between 20,000 and 25,000 genes.
Every individual has two copies of each gene, in which one is inherited from each parent. Most of the genes are the same in all people, but a few genes which make less than 1 percent of the total are slightly different between people.
Option A- Muton- It is a term used for the smallest part of genetic material which is capable of having a mutation that can be identified with a distinct single pair of nucleotides.
Option B- Recon- Recon is the term used for the locations within a gene which take part in recombination. This is the smallest distance between recons within a gene which states that recombination cannot occur within a recon. The term recon is known as a unit of recombination.
Option C- Cistron - It is a functional unit of gene. It is used to emphasize or signify that genes show a particular behavior in a cis-trans test. There are distinct locations or loci within a genome that are cistronic.

So option C - Cistron - is the correct answer.

Note:
The Human Genome Project (HGP) is an international biological research project which has the goal to determine the base pairs that make up human DNA. It aims at identifying and mapping all of the genes in the human genome. It is the world's largest collaborative biological project. The Human Genome Project through its results aims at studies of the DNA which can help us predict various genetic diseases.