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TLS Online TPP Program

#Question id: 13168

Use the following diagram from the text showing the spread of the cattle egret, Bulbulcus ibis, since its arrival in the New World, to answer the following question.


How would an ecologist likely explain the expansion of the cattle egret?

#Unit 10. Ecological Principles
  1. The areas to which the cattle egret has expanded have no cattle egret parasites.
  2. Climatic factors, such as temperature and precipitation provide suitable habitat for cattle egrets.
  3. There are no natural predators for cattle egrets in the New World, so they continue to expand their range. 

  4. A habitat left unoccupied by native herons and egrets met the biotic and abiotic requirements of the cattle egret transplants and their descendants.

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TLS Online TPP Program

#Question id: 4657

#Unit 11. Evolution and Behavior

 Which of the following statements most detracts from the claim that the human appendix is a completely vestigial organ?
TLS Online TPP Program

#Question id: 12495

#Unit 8. Inheritance Biology

Haemophilia A is a severe coagulation disorder that shows X-linked recessive inheritance. Red-green colour blindness also shows X-linked recessive inheritance. A man with both haemophilia A and colour blindness is referred for genetic counseling. Assume that his partner is not a carrier of either of these conditions. Which of the following is correct?
TLS Online TPP Program

#Question id: 17080

#Unit 12. Applied Biology

Hypoxanthine and thymidine are required for running which pathway
TLS Online TPP Program

#Question id: 5756

#Unit 8. Inheritance Biology

Type of mutation caused by an addition or deletion of a base in a polypeptide-encoding part of a gene
TLS Online TPP Program

#Question id: 2614

#Unit 2. Cellular Organization

Effects in synthesis, if replaces trp codons with different amino acids;

His concentration low

Run/ On

Ala concentration High

Off