Embryos of different animals show patterns of similarities. What is this evidence for?
a
that these animals all have very similar DNA
b
that these animals all have the same physical structures
c
that these animals evolved from a common ancestor
d
that these animals have linear relationships
c. that these animals evolved from a common ancestor.
bot whats the answer to
Compared to rodents, rabbits have an extra pair of incisors and other skeletal structures that are different. They also have some features that are similar. What can scientists conclude from this observation?
Rodents and rabbits share a common ancestor.
Rodents and rabbits evolved from different mammal ancestors and lack a common ancestor.
Rabbit teeth are better than rodent teeth.
Rabbits evolved from a species of rodent.
A possible correct answer could be: a. Rodents and rabbits share a common ancestor. The fact that they have some similarities, as well as some differences in their skeletal structures, suggests that they both evolved from a common ancestor but then diverged and adapted to different ecological niches.
bot whats the answer to Match each term to its proper description.
1.
primate
2.
common ancestor
3.
hominin
4.
bipedal
a.
walking upright on two legs
b.
group that includes lemurs, monkeys, apes, and humans
c.
group that includes humans and our extinct relatives
d.
organism that evolves into two or more other organisms
1. primate - b. group that includes lemurs, monkeys, apes, and humans
2. common ancestor - d. organism that evolves into two or more other organisms
3. hominin - c. group that includes humans and our extinct relatives
4. bipedal - a. walking upright on two legs
bot whats the answer to
Based on the tree, which hominin lived at the same time as H. habilis?
H. heidelbergensis
H. erectus
H. neanderthanalensis
H. sapiens
Based on the tree, H. erectus lived at the same time as H. habilis.
bot whats the answer to
There are 13 species of Darwin's finches on the Galapagos Islands. They have many similar features but differ in beak size and shape. Which explanation accounts for these characteristics?
Each finch species evolved from a different ancestor.
All finch species evolved from a common ancestor.
Finch species interbreed.
Finch species have similar diets.
b. All finch species evolved from a common ancestor. The differences in beak size and shape among Darwin's finches can be explained by natural selection acting on the variation present within a population. The ancestral finch species that colonized the Galapagos Islands diversified over time, adapting to different ecological niches characterized by available food resources.
bot whats the answer to
.
Archaeopteryx is considered to be a transitional form between dinosaurs and birds. Which of the following is a trait that is unique to both Archaeopteryx and modern birds?
claws
wings
teeth
feathers