1) C
A population has to be isolated for speciation
2) D
Different species are incapable of reproducing with one another
3) D
When a population is contained, the recessive alleles can become dominant within the population
Answer: a hard sedimentary rock, composed mainly of calcium carbonate or dolomite, used as building material and in the making of cement.
Muốn chắc chắn ở F2 thu được ít kiểu gen và kiểu hình nhất thì phải chọn lai hai cây F1 có kiểu gen và như thế nào?Tại sao
The phloem transports sucrose that is converted to starch elsewhere.
The building block of carbohydrates is Monosaccharides
