Phase 4 (resting membrane potential) averages about −90 millivolts.

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#Id: 3709

#Unit 2. Cellular Organization

Depending on the diploid combination of thalassemic alleles, an affected individual may have any number of a chains from zero to three.

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#Id: 3710

#Unit 2. Cellular Organization

if an individual has only one a gene, the excess b chains form the unusual tetramer b4, which causes hemoglobin H (HbH) disease. The complete absence of a genes results in hydrops fetalis, which is fatal at or before birth.

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#Id: 3711

#Unit 2. Cellular Organization

Hb anti-Lepore, Hb Kenya result from unequal crossing over between linked genes

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#Id: 3712

#Unit 2. Cellular Organization

Ribosomal RNA is encoded by a large number of identical genes that are tandemly repeated to form one or more clusters called as rDNA cluster

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#Id: 3713

#Unit 2. Cellular Organization

Part of genome which changes expression of genome called as mutable loci or sometimes GENES

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#Id: 3714

#Unit 2. Cellular Organization

If entire genome is encoding than mathematically human should have 106 genes but humans have only 30,000 to 50,000 genes this is also a paradoxical feature of genome