Đáp án: 1 Ở ₫ậu hà lan hạt trơn trội so với hạt nhăn Cho ₫ậu hạt trơn thuần chủng lai với hạt nhăn Xác ₫ịnh kết quả ở F2 - Đáp án QUy ước A - Trơn, a-nhănP AA x aaF1 AaF1xF1 Aa xAaGF1 (A, a) x (A, a)F2 1AA 2Aa 1aaKH 3 trơn 1 nhăn

MinhThang

2 năm trước

1. Ở ₫ậu hà lan hạt trơn trội so với hạt nhăn .Cho ₫ậu hạt trơn thuần chủng lai với hạt nhăn .Xác ₫ịnh kết quả ở F2

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nguyenthuyen121192

2 năm trước

Đáp án:

QUy ước: A - Trơn, a-nhăn

P: AA x aa

F1: Aa

F1xF1: Aa xAa

GF1: (A, a) x (A, a)

F2: 1AA : 2Aa : 1aa

KH: 3 trơn: 1 nhăn

vuhuyenwhite

2 năm trước

Hạt trên cây F2 là thế hệ F3 .

=> Aa 1/2 ∧ 3 = 1/8

AA = aa = ( 1 - 1/8 ) / 2 = 7/16

chú ý : 1/2 là 1 phần 2 mấy cái phân số kia cũng giống như thế .

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