Practice Questions

TLS Online TPP Program

#Question id: 5214

What is the most probable explanation for the continued presence of pseudogenes in a genome such as our own?

#Unit 11. Evolution and Behavior

They are genes that had a function at one time, but that have lost their function because they have been translocated to a new location.
They are genes that have accumulated mutations to such a degree that they would code for different functional products if activated.
They are duplicates or near duplicates of functional genes but cannot function because they would provide inappropriate dosage of protein products.
They are genes that are not expressed, even though they have nearly identical sequences to expressed genes.

More Questions

TLS Online TPP Program

#Question id: 10706

#Unit 10. Ecological Principles

Assuming community occupy by 4 species with number 10, 20, 10, 20. What is Shannon weaver index of that community?

TLS Online TPP Program

#Question id: 10707

#Unit 10. Ecological Principles

Based on the intermediate disturbance hypothesis, a community’s species diversity is increased by

TLS Online TPP Program

#Question id: 10708

#Unit 10. Ecological Principles

Which of the following statements is a likely explanation for why invasive species take over communities into which they have been introduced?

TLS Online TPP Program

#Question id: 10716

#Unit 10. Ecological Principles

The stability of a food web in a community is quantified using certain parameters which are defined below. Which of the following is an CORRECT representation?

A. Community with more complex is more stable

B. Community with more number of alternate is more stable

C. Stability of community is inversely proportional to Connectance

D. Community with higher value of dominax index is more stable

TLS Online TPP Program

#Question id: 10719

#Unit 10. Ecological Principles

Five Hypotheses Explain How Species Richness Affects Community Services, Following statement are given

A) Community services decline with decreased species richness in a stepwise fashion.

B) Species that play the same roles in a community can compensate for each other if some are lost under particular conditions

C) Species richness declines even slightly from its natural levels, community services are reduced immediately

D) Community services change as the number of species increases or decreases, but that the direction of change is not predictable.