In which phase of mitosis does the nuclear envelope disappear, chromosomes become visible, and centrioles begin to form mitotic spindles? 1. Prophase
2. Metaphase
3. Anaphase
4. Telophase

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.