Mapping quantitative trait loci (QTL) through lab crosses is one way to find the genetic variants responsible for variation in a trait. What is the rationale for why this approach works?
Mapping quantitative trait loci (QTL) through lab crosses is one way to find the genetic variants responsible for variation in a trait. What is the rationale for why this approach works?
Chapter4: The Emergence Of Thought And Language: Cognitive Development In Infancy And Early Childhood
Section4.4: Language
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Studies on the possible adaptive value of anticipatory grief have produced results contrary to expectations: people that show more grief before the death of a loved one with a terminal disease also show more grief afterwards. What is a possible explanation for these findings?
- Grief is actually not adaptative – it’s just a side effect of our big brain
- Many other factors influence levels of grief and sadness (gender, past experiences, personality, age) which may obscure any underlying relationship
- The measurements of grief used in this study were too coarse, some quantitative measurement would be better than three qualitative categories
- All of the above
Mapping quantitative trait loci (QTL) through lab crosses is one way to find the genetic variants responsible for variation in a trait. What is the rationale for why this approach works?
- By systematically inhibiting the action of each gene, you can determine which genes affect which traits
- By sequencing the entire genome, you can determine which genes differ between populations, lines or species that vary in the trait of interest
- By shuffling the genomes of two genotypes you wish to contrast, you can figure out which regions (and genes within) are causally tied to the trait of interest
- By created controlled lines in common garden conditions, you can isolate the contribution of
genetic variation versus environmental variation
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