The region of a chromosome where two sister chromatids are held together is called a

Witch type of microscope is used to view very small cell components like proteins and dna?

Which is the correct formula for photosynthesis

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.