Gene expression is often assayed by measuring the level of mRNA produced from a gene. What level of the control of gene expression can by analyzed by this type of assay?

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#Question id: 15778

#Unit 5. Developmental Biology

Stem cell regulation is highly influenced by the microenvironment that surrounds a stem cell and is known as the

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#Question id: 19101

#Unit 4. Cell Communication and Cell Signaling

which are specialized bacteria that are obligate parasites of the phloem tissue?

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#Question id: 12710

#Unit 8. Inheritance Biology

When the two gene is present on the same chromosome and 50% chance of crossing over take place, then this is the case of ,

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#Question id: 16498

#Unit 12. Applied Biology

Chromosomal gene of agrobacterium needed for an optimal expression of vir genes of pTi

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#Question id: 4725

#Unit 8. Inheritance Biology

Ptosis (droopy eyelid) may be inherited as a dominant human trait. Among 30 people who are heterozygous for the ptosis allele, 10 have ptosis and 20 have normal eyelids. What is the penetrance for ptosis?