Your professor wants you to construct a phylogenetic tree of orchids. She gives you tissue from seven orchid species and one lily. What is the most likely reason she gave you the lily?

TLS Online TPP Program

#Question id: 3375

#Section 2: Evolution

	Evolutionary force		Caused
A	Mutation	i	Increase genetic variation within population
B	Genetic Drift	ii	Decrease genetic variation within population
C	Migration	iii	Decrease genetic variation between  population
		iv	Increase genetic variation between population

Which of the following combination is correct?

TLS Online TPP Program

#Question id: 12261

#Section 2: Evolution

When a person removed the predator Pisaster from rocky intertidal areas, the diversity of prey animals changed from 15 to __________. 

TLS Online TPP Program

#Question id: 16873

#General Aptitude

Ten years have passed ……… my grandmother died.

TLS Online TPP Program

#Question id: 3250

#Section 2: Evolution

Consider a diploid population at Hardy-Weinberg equilibrium. For a locus with two alleles, the frequency of the A1A1, A1A2 and A2A2 genotype is 0.01, 0.18 and 0.81) Which of the following statement is correct?

TLS Online TPP Program

#Question id: 4569

#Section 2: Evolution

Which of the following must exist in a population before natural selection can act upon that population?