Question

the fossils of ancient whale like mammals with four limbs provide evidence that whales evolved from land creatures.
true
false
8 true or false 10 points
all living things have dna made up of the same 4 nitrogenous bases (a,t,c,g).
true
false
9 multiple choice 10 points
dna evidence shows that the whale is most closely related to which land animal?
dogs
the hippopotamus
chicken
guana
10 multiple choice 10 points
fossils, dna, and embryology provide evidence that birds evolved from
fish ancestors
insect ancestors
dinosaur ancestors
bat ancestors

Explanation:

Question 7

Fossils of ancient whale - like mammals with four limbs (transitional fossils) show that whales had land - dwelling ancestors as these fossils have features of both land and aquatic organisms, supporting the evolution of whales from land creatures.

All living organisms (from prokaryotes to eukaryotes) have DNA composed of the four nitrogenous bases adenine (A), thymine (T), cytosine (C), and guanine (G). This is a fundamental aspect of the molecular biology of life, showing the unity of life at the genetic level.

DNA evidence has shown that whales share a very close evolutionary relationship with hippopotamuses. Molecular studies comparing the DNA sequences of whales and various land animals have revealed that the hippopotamus is the land animal most closely related to whales. Dogs are in a different evolutionary lineage, chickens are birds, and iguanas are reptiles, none of which are as closely related to whales as hippopotamuses.

Answer:

True

Question 8