Asked by Emily Knight on May 18, 2024
Verified
In the dark-eyed junco, the offspring of females and their extra-pair mates are more likely to survive to reproduce, and have higher reproductive success, than the offspring of females and their pair-bonded mate. While this could be explained by the good genes hypothesis, it could also be the result of maternal effects (females invest more in eggs sired by extra-pair mates). Describe how you could test if these offspring differences are due to good genes or maternal effects.
Good Genes Hypothesis
A theory in evolutionary biology suggesting that individuals select mates based on traits that indicate genetic quality, leading to offspring with enhanced survival and reproductive success.
Maternal Effects
The influence of the mother’s genotype or phenotype on the phenotype of her offspring, independent of the offspring's own genes.
Dark-eyed Junco
A species of North American birds known for their varying plumage colors but typically having dark eyes, found in forests and urban areas.
- Understand the significance of genetic elements, like genetic variance and the evasion of inbreeding, in the development of polyandry.
- Gain an insight into how polyandry contributes to genetic benefits, affecting offspring survival and efficiency.
- Comprehend the multifaceted nature of mating tactics and their responsiveness to changes in environmental and social contexts.
Verified Answer
Learning Objectives
- Understand the significance of genetic elements, like genetic variance and the evasion of inbreeding, in the development of polyandry.
- Gain an insight into how polyandry contributes to genetic benefits, affecting offspring survival and efficiency.
- Comprehend the multifaceted nature of mating tactics and their responsiveness to changes in environmental and social contexts.
Related questions
According to the Evolutionary Perspective,as a Woman,Lisa Should Become Most ...
Inherited Traits That Contribute to Survival and Reproductive Success Are ...
Heterosexual Women Are Most Attracted to Tall Men with Slim ...
In Buss's Study on Cross-Cultural Sex Differences in Human Mate ...
Multiple Mates for Females Only