Bai 1. I/ Cho biet cac cap NST tuong dong deu gom hai NST cau true khac nhau. Qua trinh giam phan khong xay ra trao doi doan va khong dot bien. Hay viet ki hieu NST cua mot te bao qua tung ki trong cac truong hop sau: a) Xet mot cap NST tuong dong, ki hieu Aa. b) Xet hai cap NST tuong dong, ki hieu AaBb.

Which of the following observation darwin shape his concept of descent with modification? a) species diversity declines farther from the equator. b) fewer species live on islands than on the nearest continents. c) birds live on islands located farther from the mainland than the bird's maximum nonstop flight distance. d) south american temperate plants are more similar to the tropical plants of south america than to the temperate plants of europe. e) earthquakes reshape life by causing mass extinctions.