Question

Genes present on Y chromosome?

Answer 1

When we talk about Y chromosome it is mainly found in males only which is inherited from male to male or from father to son. They code to "maleness" but sometimes cause conditions like colour blindness etc.

Complete answer-
Before we infer about the genes let us know about the molecules on which they are present. DNA or Deoxyribonucleic acid is the molecule to which all genes code to. The traits are usually transferred to the offspring usually by these genes that are present on the chromosomes.
The answer to this is Holandric genes. The genes that are carried on Y chromosomes are known as holandric genes. These genes are transferred in the males only to the son. These inheritance usually produce the genes that are present on the y character, that means the male characters are recessive and are expressed.
This kind of linkage is usually difficult to see as this chromosome is small and difficult to express. Not all the genes that are used to detect the sex of the organism being Y linked only. All the Y chromosome genes that do not combine are called "non recombining regions".
Some characteristic of these genes are:
1. These are usually transferred to males.
2. It usually appears in the offspring that are carrying these traits.
3. Absent in the females even if they are carrying these traits.

Note
Gene interaction is the influence of one gene over another which causes a change in its expression, phenotype or normal mendelian ratio of 3:1 (monohybrid cross) and 9:3:3:1 (dihybrid cross). We all know that sex linkage inheritance is the transmission of characters and their determining genes along with sex determining genes which are borne on the sex chromosomes, and, therefore are inherited from one generation to the next. It is usually of 4 types: diagenic, diandric, hologic and holandric. The holandric genes are directly transferred from male to male or from father to son.