
Concept explainers
To review:
The given blank space in the statement, “play is almost certainly an adaptive behavior because it used considerable __________, and it can distract the animal from watching for _________. The most likely explanation for why animals play is the “_____ hypothesis,” which states that play teaches the young animal _______ that will be useful as a (n) _____. This hypothesis is supported by the observation that animals that have larger _____ are more likely to play.”
Introduction:
An animal performs different activities like feeding, locomotion, mating, predation, and play in its habitat. Some of these activities are directed towards its survival, while others are displaced in order to acquire fitness. Similarly, the play is an adaptive behavior, which makes an animal fit in its current environment.

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Chapter 26 Solutions
Biology: Life on Earth (11th Edition)
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- A loss of function mutation in Pitx1 enhancers can cause (blank) Removal of Pitx1 exons and growth of ectopic hindlimbs, growth of extra ectopic forelimbs, loss of forelimb specification and development, and loss of hindlimb specification and developmentarrow_forwardHox1a most likely contributes to (blank) patterning in the developing embryo? Ventral, posterior, limb or anteriorarrow_forwardSelect all of the following that can help establish Hox gene expression boundaries (things that affect Hox and not things that Hox affects). Retinoic acid, anterior/posterior axis, fibroblast growth factors, vagal neural crest, and enhancersarrow_forward
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