Why are Drosophila P elements only activated in germline cells?

What will be an ideal response?


Ans: A germline-specific splicing event removes an intron that results in an mRNA that is translated to transposase. In somatic cells, the presence of this intron results in the production of a repressor protein that inactivates transposition.

Biology & Microbiology

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What can be inferred from the accompanying graph?

a. This reaction is endergonic, with a positive ?G. b. This reaction is endergonic, with a negative ?G. c. This reaction is exergonic, with a positive ?G. d. This reaction is exergonic, with a negative ?G. e. There is not enough information to make a determination.

Biology & Microbiology

Which type of defense mechanism is not classified as the first line of defense?

a. Chemical barriers b. Skin c. Mechanical barriers d. Physical barriers e. Leukocytes

Biology & Microbiology

Organs strung together functionally and usually structurally form

a. organs. b. systems. c. tissues. d. organelles.

Biology & Microbiology

The failure of either homologous chromosomes to separate during meiosis I or sister chromatids to separate during meiosis II is called ________

Fill in the blank(s) with correct word

Biology & Microbiology