Within the human population there are millions of single base variations, called 

TLS Online TPP Program

#Question id: 4608

#Zoology

What must be true of any organ described as vestigial?

TLS Online TPP Program

#Question id: 4609

#Zoology

Pseudogenes are ________.

TLS Online TPP Program

#Question id: 4610

#Zoology

It has been observed that organisms on islands are different from, but closely related to, similar forms found on the nearest continent. This is taken as evidence that ________.

TLS Online TPP Program

#Question id: 4612

#Zoology

The greatest number of endemic species is expected in environments that are ________.

TLS Online TPP Program

#Question id: 4616

#Zoology

Logically, which of these should cast the most doubt on the relationships depicted by an evolutionary tree?

TLS Online TPP Program

#Question id: 4617

#Zoology

Which of the following is not an observation or inference on which natural selection is based?