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  Home >> Genetics Dictionary >> Zinc finger Zygonema Zygotene

Zinc finger
A type of DNA binding domain found in some transcription factors. Zinc fingers are characterized by a pattern of cysteine and histidine residues that complex with zinc ions to form a polypeptide loop or finger.

Zinc finger protein
A secondary feature of some proteins containing a zinc atom; a DNA binding protein.

Zygote

The diploid cell (anew individual) formed by fusion of two haploid gametes.
The cell formed by the fertilization of male and female gametes.

Zygotic Selection
The forces acting to cause differential mortality of an organism at any stage (other than gametes) in its life cycle.

Zygonema (adjective: zygotene)

A stage of meiotic prophase I, in which the homologous chromosomes synapse along their entire length, forming bivalents. The stage between leptonema and pachynema.

 

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