The CFTR gene, on human chromosome 7, encodes an ion channel protein that regulates chloride ion concentrations. Mutations that disrupt CFTR function may lead to a disease called cystic fibrosis. How many copies of the CFTR gene are present in a cell that is... In G1 of the cell cycle
In G2 of the cell cycle
In a sperm cell
In prophase I of meiosis In a primary spermatocyte In a second polar body
In a recently fertilized zygote

c. genetic engineering

explanation:

the "power" of a lens is its resolution power, or its ability to distinguish between to closely located points. with the low power lens, it is likely you will see the rough form of the hay and maybe some movement of dots around the hay. however, when observed with the high power lens, the detailed features of the hay become visible and the microbes being grown are more clearly visible.

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