Micro-evolution is the term used for changes in allele frequencies that occur over time.

A) It gives rise to changes in the gene pool, which results in few changes in the same species

B) It occur above species level

C) New addition, deletion in the genetic structure, resulting in the formation of new species

D) It changes occurs over short time scales

Which of the following combinations is correct?

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#Question id: 3979

#Unit 3. Fundamental Processes

“Housekeeping genes” in bacteria are commonly expressed constitutively, but not all of these genes are expressed at the same level (the same number of molecules per cell).  The primary mechanism responsible for variations in the level of constitutive enzymes from different genes is that:

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#Question id: 3772

#Unit 3. Fundamental Processes

Who performed classic experiments that supported the semiconservative model of DNA replication?

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#Question id: 3529

#Unit 8. Inheritance Biology

Mendel crossed tall and round seeded pea plants with dwarf and wrinkle seeded pea. The F1 plants were all tall and round seed. What is the probability of tall plant with wrinkle seed in F2 generation?

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#Question id: 29551

#Unit 6. System Physiology – Plant

Which of the following is correctly related or defining the effector molecule regarding pathogen

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#Question id: 16787

#Unit 13. Methods in Biology

The following observations are arranged in ascending order. The median of the data is 15 find the value of x. 

8, 11, 12, x + 6, 17, 18, 23