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TLS Online TPP Program

#Question id: 5542

One stage of cleavage is the morula stage which is:

#5. Developmental Biology

  1. An embryo with 4 cells

  2. An embryo with a darkly pigmented vegetal hemisphere

  3. A collection of 16-32 cells resembling a raspberry

  4. A group of cells that do not undergo DNA replication

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TLS Online TPP Program

#Question id: 18369

#12. Applied Biology

The chemical and breakdown products of herbicide DDT cause eggshell thinning and population declines in multiple North American and European bird of prey. They are remediated by 
TLS Online TPP Program

#Question id: 5033

#11. Evolution and Behavior

Which of the following statements is correct in regard to Homo erectus?
TLS Online TPP Program

#Question id: 2645

#2. Cellular Organization

When uncharged tRNA concentration is low what will you expect as the activity of tryptophan operon?
TLS Online TPP Program

#Question id: 1100

#4. Cell Communication and Cell Signaling

Which of the following results would most likely be an immediate result of a growth factor binding to its receptor?
TLS Online TPP Program

#Question id: 10578

#10. Ecological Principles

The population of annual breeder growing at a rate of 10% per year. Initial population size is 1200. After 3 years population size would be