What three criteria’s are needed for members of a group to be all part of the same species

What are the characteristics of living things

Why do we perceive objects as retaining their brightness under different lighting levels?

Parthenogenesis is a type of reproduction that does not require a mate. it’s rarely seen in birds and higher vertebrates. parthenogenesis involves the formation of a zygote. but this zygote is formed without fertilization. in parthenogenesis, in the absence of a male gamete, the ovum develops directly in the zygote.