DnaB is responsible for forward movement at the replication fork.

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#Id: 6508

#Unit 7. System Physiology – Animal

Tetrahydrobiopterin (BH4) is a cofactor for tyrosine hydroxylase and phenylalanine hydroxylase

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#Id: 2915

#Unit 3. Fundamental Processes

The length of duplex DNA that usually is unwound to initiate replicati011 is probably <60 bp.

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#Id: 943

#Unit 5. Developmental Biology

Chemotaxis 

sperms are attracted toward eggs of their species by following a gradient of a chemical secreted by the egg.

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#Id: 9105

#Unit 10. Ecological Principles

Introduced species A species that is introduced to a region of the world where it has not historically existed. Also known as Exotic species or Non-native species

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#Id: 882

#Unit 13. Methods in Biology

The genetic diseases caused by trinucleotide repeat SSRs within genes. Huntington disease (HD) is one of the approximately 20 such trinucleotide repeat diseases in humans. HD is transmitted as an autosomal dominant mutation.