Genes are not uniformly distributed in the genome.

Regions longer than 500 kb where there are no ORFs called as deserts

The most gene-rich chromosomes have 10% of their sequences as deserts. So overall, 20% of the human genome consists of deserts that have no protein coding genes.

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#Id: 2541

#Unit 13. Methods in Biology

The PCR primers must not have self complementary regions as this would lead to hairpin formation within primer molecules and make then unsuitable for PCR.

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#Id: 3275

#Unit 6. System Physiology – Plant

Complex III, also called cytochrome bc1 complex or ubiquinone;

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#Id: 2425

#Unit 3. Fundamental Processes

There are other parallels between initiation and termination. Both require breaking of hydrogen bonds (initial melting of DNA at initiation and RNA–DNA dissociation at termination), and both can utilize additional proteins (sigma factors, activators, repressors, and rho factor) that interact with the core enzyme.

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#Id: 10246

#Unit 6. System Physiology – Plant

Isopentenyl diphosphate (IPP)

Zeaxanthin (C40)

all trans-Violaxanthin (C40)

9‘-cis-Neoxanthin (C40)

Xanthoxin (C15)

ABA-aldehyde (C15) Abscisic acid (C15) (ABA)

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#Id: 5572

#Unit 7. System Physiology – Animal

Recirculation of Urea from the Collecting Duct to the Loop of Henle Contributes to Hyperosmotic Renal medullary interstitium and formation of concentrated urine