Question

All genes located on same chromosome
A. From different groups depending upon their relative distance.
B. From interactive groups that affect the phenotype.
C. From one linkage group.
D. Will not form any linkage.

Answer 1

Hint: Chromosomes are small thread-like structures situated inside the nucleus of living cells.
Each chromosome is made of protein and deoxyribonucleic acid (DNA).
A gene is the fundamental unit of heredity.
Genes are made up of DNA and situated on the chromosomes.

Complete answer:
In order to solve this question we need to learn more about chromosomes and genes.
As we know, a cell is the basic structural, functional and biological unit of life.
Plant as well as an animal cell consists of membrane bound organelle known as nucleus.
The nucleus is a largest organelle that contains genetic material (DNA) of eukaryotic organisms.
It helps to maintain the integrity of the cell by transcription and replication processes.
Nucleus is covered by a membrane known as nucleolus.
Cytoplasm of a nucleus is known as nucleoplasm.
It contains the genetic material of the cell.
This material is arranged as DNA molecules, along with a variety of proteins, to form chromosomes.
Chromosomes: A chromosome is a DNA (deoxyribonucleic acid) molecule.
Most eukaryotic chromosomes include packaging proteins which binds and condense the DNA molecule.
Genes: Genes are found on thread like structures called chromosomes.
All the genes located on the same chromosome form one linkage group.
A linkage group can be explained as all the genes on a chromosome that moves as a single unit during the cell division.
These genes do not tend to separate, until the crossing-over.
For example, human beings have 23 linkage groups due to 23 pairs of chromosomes.

So, the correct option is option C. Form one linkage group.

Note: Gene mapping describes the methods used to identify the locus of a gene and the distances between genes.
Gene mapping can also describe the distances between different sites within a gene.
The essence of all genome mapping is to place a collection of molecular markers onto their respective positions on the genome.
 Genes can be viewed as one special type of genetic markers in the construction of genome maps, and mapped the same way as any other markers.