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5 May, 07:47

What are maternal-effect genes?

They are genes that control early embryogenesis and development

of female but not male offspring.

They are genes that control early embryogenesis and development

of male but not female offspring.

They are genes that are transcribed in the nuclei of the

developing embryo giving rise to fourteen segments in

Drosophila.

They are genes that control early development that are

dependent on the deposition of their products (mRNA, transcription

factors, various structural proteins, etc.) in the egg by the

mother.

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  1. 5 May, 08:11
    0
    They are genes that are transcribed in the nuclei of the developing embryo giving rise to fourteen segments in Drosophila.

    Explanation:

    Maternal effect genes:

    - They code for RNAs and proteins that play a key role in the early stages of embryogenesis (cell division, clivating pattern, axial axis orientation)

    - Defective mutant alleles are usually lethal or have dramatic effects on the offspring phenotype
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