Practice Questions

  1. Home
  2. Free Resources
  3. Practice Questions
  4. 39566
TLS Online TPP Program

#Question id: 19138

Which of the following statement is correct?

#I Life Science/ Life Sciences Group – I-V
  1. BLOSUM matrices may have less evolutionary meaning than the PAM matrices. 
  2. BLOSUM matrices are entirely derived from local sequence alignments of conserved sequence blocks, whereas the PAM1 matrix is based on the global alignment of full-length sequences
  3. PAM matrices are derived from an evolutionary model whereas the BLOSUM matrices consist of entirely direct observations
  4. All of the above 
More Questions
TLS Online TPP Program

#Question id: 4605

#SCPH28 | Zoology

Over long periods of time, many cave-dwelling organisms have lost their eyes. Tapeworms have lost their digestive systems. Whales have lost their hind limbs. How can natural selection account for these losses?
TLS Online TPP Program

#Question id: 4606

#SCPH28 | Zoology

Which of the following evidence most strongly supports the common origin of all life on Earth? All organisms ________.
TLS Online TPP Program

#Question id: 4607

#SCPH28 | Zoology

Members of two different species possess a similar-looking structure that they use in a similar way to perform about the same function. Which of the following would suggest that the relationship more likely represents homology instead of convergent evolution?
TLS Online TPP Program

#Question id: 4608

#SCPH28 | Zoology

What must be true of any organ described as vestigial?
TLS Online TPP Program

#Question id: 4609

#SCPH28 | Zoology

Pseudogenes are ________.
TLS Online TPP Program

#Question id: 4610

#SCPH28 | 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 ________.