If Mutagenizing a Number of Drosophila Results in Several Observable

question 17

Multiple Choice

If mutagenizing a number of Drosophila results in several observable phenotypes but also in several lethal mutations, does this mean that recessive lethal mutations cannot be studied further?

• A)No-the lethal allele can be recovered from heterozygous siblings.
• B)No-the lethal allele can be sequenced from the other embryos.
• C)Yes-lethal alleles can be studied only if they are recessive.
• D)Yes-lethal alleles can be studied only if they are conditional.
• E)Yes-unless the lethal allele can be supplemented with a missing gene product.

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Definitions:

Chromatin Condenses

The process where chromatin fibers coil and fold to form more compact structures, typically during cell division.

Prophase

The first stage of cell division in both mitosis and meiosis, during which the chromatin condenses into visible chromosomes, and the nuclear envelope begins to disintegrate.

Phosphorylation

Phosphorylation is a biochemical process that involves the addition of a phosphate group to a molecule, crucial for energy transfer and signal transduction in cells.

Cell Cycle

The series of events that take place in a cell leading to its division and duplication.