Bissoy.com
Doctors Medicines MCQs Q&A

The basic assumption of the UPGMA method is that all taxa evolve at a constant rate and that they are equally distant from the root, implying that a molecular clock is in effect.

The basic assumption of the UPGMA method is that all taxa evolve at a constant rate and that they are equally distant from the root, implying that a molecular clock is in effect. Correct Answer True

However, real data rarely meet this assumption. Thus, UPGMA often produces erroneous tree topologies. However, owing to its fast speed of calculation, it has found extensive usage in clustering analysis of DNA microarray data.

Related Questions

In the Neighbor Joining step, The UPGMA method uses unweighted distances and assumes that all taxa have constant evolutionary rates.
Molecular clock is an assumption by which molecular sequences evolve at varying rates.
A clock strikes once at 1 o'clock, twice at 2 o'clock and thrice at 3 o'clock, and so on. If it takes 12 seconds to strike at 5 o'clock, what is the time taken by it to strike at 10 o'clock?
There are 3 clocks located at California, Berlin and Beijing respectively. If the hour hand of the clock at California is rotated by 270 degrees, then it will show same time as clock in Berlin. If the hour hand of clock in Berlin is rotated by 180 degrees, then it will show same time as clock in Beijing. If time at clock at Beijing is 8 : 30 PM what time is clock at California showing?
In the question given below, there is a statement followed by two assumptions numbered I and II. An assumption is something supposed or taken for granted. You have to consider the statement and assumptions and then decide which of the assumption(s) is/are implicit in the statement. You have to consider the statements to be true even if they seem to be at variance from commonly known facts. Statement: Many big actors like Shahrukh Khan, Naseeruddin Shah come from NSD. Assumption I: NSD is the only institute which gives great actors to the film industry. Assumption II: If you want to be a great actor you have to be a student of NSD.
In a question below is given a statement. An assumption is something supposed or taken for granted. You have to consider the following assumption and decide which of the assumption is implicit in the statement. Statement: "Government of State X's state, according to which it has been decided to provide a cooked meal to the students of all primary schools of the states, is not a proper and judicious step." — Criticism by a person. Assumption: I. Student may hesitate to eat the cooked meal provided by the Government. II. The cooked meal served to the students may be hazardous for the health of students. 
A statement is followed by two assumptions numbered I and II. Considered the statement and the following assumption and decide which of the assumption and decide which of the assumption is implicit in the given statements? Statement : Lalita has a large collection of books and she keeps on purchasing new books to add to her collection. Assumption : I - Lalita has read each and every book that she has purchased. II - Lalita has love and passion for books.
A 5-stage pipelined processor has Instruction Fetch (IF), Instruction Decode (ID), Operand Fetch (OF), Perform Operation (PO) and Write Operand (WO) stages. The IF, ID, OF and WO stages take 1 clock cycle each for any instruction. The PO stage takes 1 clock cycle for ADD and SUB instructions, 3 clock cycles for MUL instruction, and 6 clock cycles for DIV instruction respectively. Operand forwarding is used in the pipeline. What is the number of clock cycles needed to execute the following sequence of instructions? Instruction Meaning of instruction I0 : MUL R2, R0, R1 R2← R0 * R1 I1 : DIV R5, R3, R4 R5 ← R3 / R4 I2 : ADD R2, R5, R2 R2 ← R5 + R2 I3 : SUB R5, R2, R6 R5 ← R2 – R6
In each question below is given a statement numbered I, II and III. An assumption is something supposed or taken for granted. You have to consider the following assumption and decide which of the assumption is implicit in the statement. Statement: About a year ago, Prime Minister Narendra Modi had told the world that the signature of a chartered accountant on financial statements was, perhaps, more powerful than even one of his own. ‘Just like doctors don’t want people to be ill to get more business, chartered accountants, too, need to safeguard the society’s economic health. Your signature is more powerful than the PM’s, and the government also believes the accounts signed by you’, Modi had said.  Assumptions: I. The CA community, however, may not have woken up to the value of the initials they put on financial statements. Last year has been more of a challenge for the community’s reputation, with banking frauds, asset quality divergences and mid-term auditor resignations dominating the headlines.  II. There cannot be a situation where there will be 100% agreement on everything. You may have rules but still judgmental factors in credit, asset recognition come in. The approach is that as soon as the asset is stretched, banks have to recognise the problem.  III. But even basic logic just went out of the window and banks together kept dishing out loans to such companies even when their annual turnover was half of the total debt.
In the question below, a statement and assumptions numbered I and II are given. An assumption is something supposed or taken for granted. You have to consider the following assumption and decide which of the assumption is implicit in the statement. Statement: Speaking about 'Veere Di Wedding' being slammed for showing female characters who use cuss words, actor Sumeet Vyas questioned, "People are so prejudiced. What's wrong if women use such language?" Assumption I. Only uneducated women use foul language and educated women use cuss words. II. It's a regular thing for [both] men and women to use cuss words while communication in informal communication.