A Very Massive Object a and a Less Massive Object

question 26

Multiple Choice

A very massive object A and a less massive object B move toward each other under the influence of gravitation. Which force, if either, is greater?

• A) the force on B
• B) the force on A
• C) Both forces are the same.

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Definitions:

Homeotic Genes

Genes that control the development of anatomical structures in organisms, determining the placement and spatial organization of body parts.

Segmentation Genes

Genes that play a crucial role in determining the segmented body plan of an organism during embryonic development.

Gap Genes

Genes involved in the early development of Drosophila embryos, segmenting the embryo into head, thorax, and abdomen regions; they help define the general regions of the body plan.

Pair-Rule Genes

Genes involved in the development of segmented animals, providing positional information during embryo segmentation.