Các nhân tố tiến hóa nào vừa làm thay đổi tần số tương đối các alen của gen vừa làm thay đổi thành phần kiểu gen của quần thể?

(1) Chọn lọc tự nhiên

(2) Giao phối không ngẫu nhiên

(3) Di - nhập gen

(4) Đột biến

(5) Các yêu tố ngẫu nhiên.

Trả lời đúng là

A. (1), (2), (4), (5).

B. (1), (2), (3), (4).

C. (1), (3), (4), (5).

D. Tất cả các nhân tố trên.

Read the story and decide if the sentences are true (T) or false (F).

On Saturday, Patricia was in the park when she saw a boy on a mountain bike. He was on the hill when suddenly he fell off his bike. Patricia ran over to help. "Where's my helmet?" he shouted. It was under a park bench so Patricia went to get it. Just then another boy ran past, took the boy's mountain bike and rode away. "Stop!" Patricia shouted. She ran after the other boy and stopped him. He got off the bike and ran away. Patricia took the bike back to the boy, "Thank you, Patricia," he said. "How do you know my name?" Patricia asked. "I live next to you," he said. "My name's Tom". On Sunday Tom left some flowers on her doorstep to say "thank you".

Tom gave Patricia a CD to say "thank you".

A. True

B. False

Read the story and decide if the sentences are true (T) or false (F).

On Saturday, Patricia was in the park when she saw a boy on a mountain bike. He was on the hill when suddenly he fell off his bike. Patricia ran over to help. "Where's my helmet?" he shouted. It was under a park bench so Patricia went to get it. Just then another boy ran past, took the boy's mountain bike and rode away. "Stop!" Patricia shouted. She ran after the other boy and stopped him. He got off the bike and ran away. Patricia took the bike back to the boy, "Thank you, Patricia," he said. "How do you know my name?" Patricia asked. "I live next to you," he said. "My name's Tom". On Sunday Tom left some flowers on her doorstep to say "thank you".

Patricia stopped the other boy and took the bike back.

A. True

B. False