Q1: These fossils were the oldest known and traces back prokaryotic activities 3.5 billion years ago. A. Stromatolites B Meteorites C. Mesosaurus fossils D. Glossopteris fossils
Q1: These fossils were the oldest known and traces back prokaryotic activities 3.5 billion years ago.
A. Stromatolites
B Meteorites
C. Mesosaurus fossils
D. Glossopteris fossils
Q2: In this mechanism, the genetic structure of the surviving population will be the genome of their descendants.
A. Founder effect
B. Bottleneck effect
C. Gene flow
D. Random mating
Q3: Which statement is true for Lamarck’s idea about the giraffe’s neck length?
A. He believed that giraffe’s neck was the result for the need to feed on taller trees and survive, and the stretching of necks from the ancestors (acquired trait) was passed down from generation to generation
B. He believed that the giraffes tend to over-reproduce and the competition brought mutations, and this mutation were passed down to their offspring from generation to generation
C. He believed that the giraffes’ necks were a result of the gradualism theory, they gradually changed from generation to generation
D. He believed that all the giraffes in the past have varying neck lengths, but short-necked giraffes died because they were not able to adapt to the changes in environment, and those with longer neck survived and reproduced
Step by step
Solved in 3 steps
