razorbill bird nest on cliffs where mix ups are not possible They dont need to

Razorbill bird nest on cliffs where mix ups are not

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Ex. razorbill bird nest on cliffs where mix-ups are not possible They don’t need to be able to recognize offspring because it will always be their own in nest, they use the location based cue or other situational cues to defend their nest - Important note: never expect an intelligent answer from an animal or human in an environment it is not adapted to or has evolved in!!!!!!!! Cinderella Effect Treating one’s genetic offspring better than their step-children Parental love promotes positive interactions and decreases negative interactions Abuse as a negative measure of parental love The rates of abuse are higher towards kids of stepparent rather than kids of two biological parents, as well as high during infancy where demands are high 600 million child deaths per year committed by stepparents Eliminating any alternative explanations for this effect Stepparenthood as a independent risk factor Poverty? No, happens in both rich and poor Common law marriages? Happens in all types big and small Age of mother and number of children in home? No Child rejecting their stepparent and missed out on child’s early life? No because rejection actualy occurs when child is older Stepfathers kill differently & for different reasons When genetic parent kills their own kid- it is generally associated with mental illness They often kill both themselves and child (but not the same for stepfathers) Infanticide (cinderella effect) not adaptive!!!!!!! Conflict Parent-Offspring Conflict Causes: sibling rivalry, opportunity costs of parental investment Costs to mother breastfeeding: cost to future offspring, costs begin to outweigh the benefits to child so mother will stop breastfeeding Child still wants to be breastfed, and now mother is breastfeeding other child = conflict No conflict zone: young child and older child Conflict is high in young mothers who have high reproductive ability because the child will compete with its siblings Prenatal conflict Occurs when fetus desires more resources than what the mother can give Fetus will try to extract more resources from mother - raise blood sugar levels, create a larger placenta
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Final Exam Review: Psyc 3100 Evolution Outcome: gestational diabetes, preeclampsia Genomic Imprinting The effects of a gene depend on which parent you got it from Maternally inherited copy functions differently than paternal gene copy Example: Female has a son and a daughter That gene will be on in both kids When her daughter has offspring to son and daughter it is still on When son has offspring it is off in both his son and daughter Within us - one gene from mom and one gene from dad Copy from mom is turned on Copy from dad is turned off Insulin gene in fetus Reduces moms blood sugar Paternal copy is off because it doesn't want to reduce blood sugar Conflict Continued Advancing one’s genetic interests at the expense of others, sometimes violently
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