Dictyostelium can utilize one of three survival strategies when food starvation-

(1) Microcyst formation, favoured in dark & wet conditions, or ammonia levels are high.
(2) Zygote formation, favoured in dark & wet conditions, & triggered by ethylene produced by the cells.
(3) Cell aggregation & differentiation

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#Id: 6842

#Unit 8. Inheritance Biology

Narrow-sense heritability

h2 = VA/VP

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#Unit 5. Developmental Biology

The first visible sign of limb development is the formation of bilateral bulges called limb buds.

1. limb bud  is 

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#Unit 8. Inheritance Biology

T bands specially telomere staining. 

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#Unit 4. Cell Communication and Cell Signaling

Multiple gene segments exist at heavy (V, D, and J) and light-chain (V and J) loci.

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#Id: 1714

#Unit 4. Cell Communication and Cell Signaling

The binding of IgE antibodies to FcεRs activates these granulocytes, inducing a signaling cascade that causes cells to release the contents of intracellular granules into the blood, a process called degranulation. releases histamine, heparin, and proteases.