Last Updated：2025/11/30
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When discussing mate choice in birds, researchers often reference the sexy son hypothesis to explain why females sometimes prefer flashy males over better caregivers.
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When discussing mate choice in birds, researchers often reference the sexy son hypothesis to explain why females sometimes prefer flashy males over better caregivers.
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Related words
sexy son hypothesis
Noun
(evolutionary
theory)
The
hypothesis,
in
evolutionary
biology,
that
a
female
animal's
optimal
choice
among
potential
mates
is
a
male
whose
genes
will
produce
male
offspring
with
the
best
chance
of
reproductive
success,
irrespective
of
the
mate's
capacity
as
a
caregiver
or
any
other
direct
benefits
he
can
offer.
Japanese Meaning
進化生物学における仮説で、雌が交尾相手を選ぶ際、交尾相手の子育て能力など直接的な利益に関係なく、その遺伝子が生み出す息子が高い繁殖成功を収める可能性があるため、魅力的な雄（セクシーな息子）を選ぶ、という現象を説明する。
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