Đậu Hà Lan, hạt vàng là tính trạng trội hoàn toàn được quy định do gen A, hạt lục được quy định do gen a. Cho thụ phấn cây hạt vàng với cây hạt lục. a/ Xác định kết quả thu được ở F1.
b/ Đem lai cây ở F1 với nhau. Xác định kết quả thu được ở F2.

The wings of insects, birds, and bats evolved independently but carry out similar functions. this is an example of a. analogous structures. b. embryonic structures. c. vestigial structures. d. homologous structures.

African penguins, which inhabit the coasts of southern africa, were classified as an endangered species in 2010. two significant threats to their survival are ecosystem damage from oil spills and overfishing by humans. overfishing depletes the food supply of african penguins. the best method to reduce the threat of overfishing would be to . the risk of oil spills could be reduced by increasing the use of , which should oil consumption. if an oil spill does occur, could be used to remove the oil so the ecosystem may more quickly recover.

Which statement explains how gravity and intertia work together