With Food Sharing Comes Increased Paternal Care

question 16

Multiple Choice

With food sharing comes increased paternal care. Therefore, what other characteristic do we expect to evolve with this pair of traits?

• A) increased sexual dimorphism
• B) decreased sexual dimorphism
• C) increased male-male competition
• D) smaller brains

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Definitions:

Sum

The result of adding two or more numbers or quantities.

Binomial Theorem

A fundamental theorem in algebra that describes the algebraic expansion of powers of a binomial. According to the theorem, it's possible to expand the polynomial u200b\( (a + b)^n \)u200b into a sum involving terms of the form u200b\( a^k b^{n-k} \)u200b.

Expand

In mathematics, to rewrite an expression or equation in an extended form by distributing or multiplying out brackets.

Pascal's Triangle

A triangular array of numbers in which the edges are 1's, and each interior number is the sum of the two numbers directly above it.