BIOL 1111 Chapter 42: Chapter 42 note

• School: University of Windsor
• Department: Biological Sciences
• Course: BIOL 1111
• Professor: Dora Cavallo

Document Summary

Housing provides a place a place in which the embryo can develop. An escalation in parental investment is moving eggs and young inside the body. Many species of sh keep eggs and young in their mouthes. Female frogs use their stomachs as broad pushes: young secrete prostaglandin e2, inhibits secretion of gastric acid in stomach and saves young from being digested. Retention of developing embryos in the oviducts has evolved independently in. Protruding high-quality food is the next level of parental investment (milk) Milk is applied to secretions of the mammary glands: other animals besides mammals also make milk (female cockroaches, male and female discus sh also feed their young, also reported in birds. Mitotic divisions of the zygote are the beginning of development activity. Nucleus houses the dna derived form egg and sperm nuclei and directs development as individual genes are activated. Balance of the info is stored in cytoplasm.