how can zygotes have complete number chromosomes
Answer (1)
Zygotes have a complete number of chromosomes because they are formed by the fusion of two gametes (sperm and egg) during fertilization. Each gamete contributes half of the chromosomes (haploid) to the zygote, resulting in a cell with a complete set of chromosomes (diploid).In humans, for example:- Sperm cell (haploid): 23 chromosomes- Egg cell (haploid): 23 chromosomes- Zygote (diploid): 46 chromosomes (23 from sperm + 23 from egg)This combination of genetic material from both parents restores the full chromosome number, ensuring the zygote has the necessary genetic information for development.
