BIO 331 Exam 2 QUESTIONS
AND VERIFIED CORRECT
ANSWERS [LATEST] GRADED
A+ 100% GUARANTEES
SUCCESS
Teaching - CORRECT ANSWER-A more complex form of behavioral investment in young, in which
parents interact repeatedly with offspring to introduce them to proper food sources (search
images), habitat, or other behaviors (e.g. song, nest building).
Natural selection favors parental instruction when offspring co-exist with parents for a long
period of time (i.e. numerous/extended opportunities for learning/reinforcement). This form is
also more common among cognitively competent (often vertebrate) species.
Recognizing your offspring - CORRECT ANSWER-Heterospecific - Right species?
Conspecific - Mine?
Inter-individual - Which one?
Evolution of offspring-recognition
signals - CORRECT ANSWER-a) vocal (crying, begging)
b) visual (patterns)
c) olfactory (mammals)
d) spatial location
, What are the main factors that drive the evolution of intricate offspring recognition
mechanisms? - CORRECT ANSWER-(1) raising young around other species
(2) raising young in large groups
(3) when some young are more valuable than others
(4) when you might mistakenly care for the wrong offspring
Playing favorites with offspring - CORRECT ANSWER-• Different offspring carry different costs
(energy)
Different offspring carry different benefits
- survival, relatedness, breeding prospects
SELECTION TYPICALLY FAVORS
PARENTAL FAVORITISM
Hypotheses explaining
parental favoritism - CORRECT ANSWER-1. The silver-spoon hypothesis (i.e. most valued)
a. Oldest and/or phenotypically best (based on quality signals)
2. The good-kid hypothesis (i.e. most valued)
b. When environmental conditions are challenging (insurancepolicy hypothesis)
• Feed them both when (i.e. in case)
times are good
• Sacrifice one when times are tough
• *Siblicide can be an assistive mechanism
of brood reduction*
c. Sons over daughters (sexy-son hypothesis)
AND VERIFIED CORRECT
ANSWERS [LATEST] GRADED
A+ 100% GUARANTEES
SUCCESS
Teaching - CORRECT ANSWER-A more complex form of behavioral investment in young, in which
parents interact repeatedly with offspring to introduce them to proper food sources (search
images), habitat, or other behaviors (e.g. song, nest building).
Natural selection favors parental instruction when offspring co-exist with parents for a long
period of time (i.e. numerous/extended opportunities for learning/reinforcement). This form is
also more common among cognitively competent (often vertebrate) species.
Recognizing your offspring - CORRECT ANSWER-Heterospecific - Right species?
Conspecific - Mine?
Inter-individual - Which one?
Evolution of offspring-recognition
signals - CORRECT ANSWER-a) vocal (crying, begging)
b) visual (patterns)
c) olfactory (mammals)
d) spatial location
, What are the main factors that drive the evolution of intricate offspring recognition
mechanisms? - CORRECT ANSWER-(1) raising young around other species
(2) raising young in large groups
(3) when some young are more valuable than others
(4) when you might mistakenly care for the wrong offspring
Playing favorites with offspring - CORRECT ANSWER-• Different offspring carry different costs
(energy)
Different offspring carry different benefits
- survival, relatedness, breeding prospects
SELECTION TYPICALLY FAVORS
PARENTAL FAVORITISM
Hypotheses explaining
parental favoritism - CORRECT ANSWER-1. The silver-spoon hypothesis (i.e. most valued)
a. Oldest and/or phenotypically best (based on quality signals)
2. The good-kid hypothesis (i.e. most valued)
b. When environmental conditions are challenging (insurancepolicy hypothesis)
• Feed them both when (i.e. in case)
times are good
• Sacrifice one when times are tough
• *Siblicide can be an assistive mechanism
of brood reduction*
c. Sons over daughters (sexy-son hypothesis)
