The following statements were made regarding the patterning of anterior-posterior body plan of Drosophila:

A. Mutant bicoid mRNA that leads to the deletion of head and thorax

B. bicoid mutant phenotype expressed  two telson phenotype

C. the Bicoid protein activates the zygotic expression of the hunchback gene

D. the bicoid mRNA is represses the hunchback mRNA

Which one of the following options represents all correct statements as made above?

TLS Online TPP Program

#Question id: 12963

#Unit 10. Ecological Principles

The benthic zone in an aquatic biome

TLS Online TPP Program

#Question id: 12964

#Unit 10. Ecological Principles

Where would an ecologist find the most phytoplankton in a lake?

TLS Online TPP Program

#Question id: 12965

#Unit 10. Ecological Principles

Phytoplankton is most frequently found in which of the following zones?

TLS Online TPP Program

#Question id: 12966

#Unit 10. Ecological Principles

You are planning a dive in a lake, and are eager to observe not many underwater organisms but be able to observe them both close up and far away. You would do well to choose

TLS Online TPP Program

#Question id: 12967

#Unit 10. Ecological Principles

Which of the following is the best explanation for why net primary productivity in terrestrial ecosystems tends to increase toward the tropics?

TLS Online TPP Program

#Question id: 12968

#Unit 10. Ecological Principles

Most terrestrial ecosystems have a pyramidal structure of where biomass of producers > primary consumers > secondary consumers > tertiary consumers. However, some aquatic ecosystems have an inverted pyramidal structure where the standing biomass of producers < primary consumers. An explanation for this is: