How is the chromosome number maintained in sexually reproducing organisms?

Majority of sexually reproducing organisms form

Life begin in all sexually reproducing organisms as a

Which one of the following is the first cell of the new generation in all sexually reproducing organisms?

What are chromosomes? Explain how in sexually reproducing organisms the number of chromosomes in the progeny is maintained.

A: Zygote is the first cell of the new ganeration in all sexually reproducing organisms. R: Cell division and cell differentiation are the stages of embryogenesis.

Constancy of the chromosome number in sexually produring generation is brought by the process of

Heterosis cannot be maintained in sexually reproducing plants as it disappears on

In all the sexually reproducing organisms, events involved are

Name two sexually reproducing unicellular organisms.

Which of the following feature is universal in all sexually reproducing organisms ?