In Mammals, the Nuclei Resulting from the Union of the Sperm

question 60

Multiple Choice

In mammals, the nuclei resulting from the union of the sperm and the egg are first truly diploid at the end of the

• A) acrosomal reaction.
• B) completion of spermatogenesis.
• C) initial cleavage.
• D) activation of the egg.
• E) completion of gastrulation.

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Definitions:

Parenchyma

A type of plant tissue composed of living cells, often the most abundant type of cell in plants, involved in photosynthesis, storage, and regenerative processes.

Axil

The angle or area between the upper side of a leaf or stem and the supporting stem or branch.

Petiole

A slender stem that attaches the leaf blade to the plant stem, enabling nutrient and water transport.

Stem

The main body or stalk of a plant, which supports leaves, flowers, and fruits, and transports fluids between the roots and the rest of the plant.