In studying humans, whales, and horses, which of the following set of similarities would be evidence for the most recent common ancestor? (1 point)
they all have hair.
they all have similar bones in their limbs.
they all have internal skeletons.
they are all mammals.
I need help ASAP. Thanks!
It is B, they all have similar bones in their limbs
C
B
A
B
D
A
C
C
C
A
B
D
They changed it (the letter answers) so its not the same anymore
Whya ok why do you guys put ABCD like the questions aren't even labeled no one will even understand it like sheeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeesh
To determine which set of similarities would be evidence for the most recent common ancestor among humans, whales, and horses, we need to consider the concept of shared characteristics among related organisms. In this case, we are comparing humans, whales, and horses, which all belong to the mammal group.
The set of similarities that would provide evidence for the most recent common ancestor among these three organisms is "they are all mammals." This is because mammals share specific characteristics, such as giving birth to live young, having specialized glands (like mammary glands), and having hair or fur.
To arrive at this conclusion, we can analyze the other options as well:
1. "They all have hair": While it is true that humans, whales, and horses have hair, this characteristic is not exclusive to mammals. Other groups of animals, like birds or reptiles, can also possess feathers or scales, respectively. Thus, hair alone is not a reliable indicator of a common ancestor.
2. "They all have similar bones in their limbs": While humans, whales, and horses do have similar bones in their limbs (such as humerus, radius, ulna, metacarpals, and phalanges), this similarity can be explained by convergent evolution. Convergent evolution is when unrelated species independently evolve similar traits due to similar selection pressures, such as adapting to a similar habitat or lifestyle. Therefore, having similar limb bones alone does not provide strong evidence for a recent common ancestor.
3. "They all have internal skeletons": This characteristic holds true for humans, whales, and horses, but it is not specific to mammals. Many other organisms, such as reptiles and birds, also have internal skeletons. Consequently, the presence of an internal skeleton alone is not sufficient evidence to support a recent common ancestor between these organisms.
In summary, the characteristic that best serves as evidence for the most recent common ancestor among humans, whales, and horses is that they are all mammals. This is because mammals share numerous distinct features that differentiate them from other groups of animals.
I think that answer is D.
I also need help with the rest of the assignment.