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#Question id: 4562


Which stratum should contain the greatest proportion of extinct organisms?

#Unit 11. Evolution and Behavior
  1. A

  2. B

  3. C

  4. D

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#Question id: 5307

#Unit 11. Evolution and Behavior

Which of the following techniques would be most appropriate to test the hypothesis that humans and chimps differ in the expression of a large set of shared genes?

TLS Online TPP Program

#Question id: 31295

#Unit 5. Developmental Biology

Which of the following cells become Nieuwkoop center?

TLS Online TPP Program

#Question id: 28287

#Unit 5. Developmental Biology

the cortical granules containing protein such as___

a) mucopolysaccharides

b) adhesive glycoproteins

c) hyalin protein

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#Question id: 3417

#Unit 11. Evolution and Behavior

In balancing selection, two or more alleles are kept in balance, and therefore are maintained in a population over the course of many generations. Which of the following example can support balancing natural selection?

A- Sickle cell allele kept in balance because heterozygotes have greater chance of survival if infected by the malarial parasite, compared with normal homozygotes

B. One morph has selective advantage over another morph

C. One homozygote has greater chance of survival than other genotype results in purity of population

D. many species of invertebrates exist as different colored forms, identical in all respects except color. Visually searching predators often develop a search image for one color form, usually the commoner

TLS Online TPP Program

#Question id: 13067

#Unit 13. Methods in Biology

The first immunoassay formats described were methods based on the ____ reaction, which is characterised either by gel formation in a liquid phase or as an opaque band in an agar plate assay.