Question 2
You enter an alien world as a renowned computational biologist. The below table is presented to you as a part of a preliminary study done by a group of scientists to study the local fauna around the base camp. They analyze the DNA and figure out that there are only two bases “+” and “0”. The below table represents the DNA sequence in 6 positions for the different species found. You build a phylogenetic tree that best represents the evolutionary relationship among the species, using the Neighbor-Joining algorithm (on the Hamming distance matrix).
You enter an alien world as a renowned computational biologist. The below table is presented to you as a part of a preliminary study done by a group of scientists to study the local fauna around the base camp. They analyze the DNA and figure out that there are only two bases “+” and “0”. The below table represents the DNA sequence in 6 positions for the different species found. You build a phylogenetic tree that best represents the evolutionary relationship among the species, using the Neighbor-Joining algorithm (on the Hamming distance matrix).
Based on the above data, answer the given subquestions
Consider the two distance matrices DM1 and DM2 shown below. Which of the following statement(s) is/are true?
Consider the two distance matrices DM1 and DM2 shown below. Which of the following statement(s) is/are true?
DM1 is additive, and DM2 is additive.
DM1, but not DM2 is additive
There exists an ultrametric tree that fits DM1, but not DM2.
There exists an ultrametric tree that fits DM2, but not DM1.