What Is One Explanation for Why Hox Genes That Determine

question 14

Multiple Choice

What is one explanation for why Hox genes that determine body plans are less important in plant embryos than animal embryos?

• A)Plants have simpler body plans than animals.
• B)Animal embryos develop more quickly than plant ones.
• C)Plant embryos are relatively simple;most of the development and differentiation of the plant body takes place in seedlings and adult plants.Animal embryos are much more complex.
• D)Plant embryos can go dormant,unlike animal embryos.
• E)Hormones are more important in plant embryos.

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Definitions:

Artificial Selection

The process by which humans breed plants or animals for particular genetic characteristics.

Directional Selection

Mode of natural selection in which forms of a trait at one end of a range of variation are adaptive.

Disruptive Selection

Mode of natural selection in which forms of a trait at both ends of a range of variation are adaptive, and intermediate forms are selected against.

Hybrid Sterility

A condition in hybrids between different species where the offspring are sterile, unable to produce viable gametes.