How are a zygote and an ovum different?

A zygote and ovum are two different stages in the development of an organism.

Ovum:

- An ovum, or egg cell, is a mature female reproductive cell.

- It is produced by the ovaries in females.

- It contains a haploid set of chromosomes, meaning half the number of chromosomes as a somatic cell.

- It is larger and immobile compared to a sperm cell.

- The ovum is ready for fertilization by a sperm cell, which leads to the formation of a zygote.

Zygote:

- A zygote is a fertilized egg that results from the union of an ovum and a sperm cell.

- It is the earliest stage of development of a new organism.

- It contains a diploid set of chromosomes, meaning it has the complete genetic material from both parents.

- The zygote undergoes cell division and differentiation, leading to the development of an embryo and eventually a fetus.

In summary, the main difference between an ovum and a zygote lies in their genetic composition and developmental stage. An ovum is the mature female gamete, while a zygote is the fertilized egg formed after the union of an ovum and a sperm cell.