Day: January 23, 2018

Introduction, Evolution

Introduction, Evolution

Topics • Physiological Mechanisms • Genetics • Development • Evolution ECOLOGY – the scientific study of the interactions among organisms and their environments Phenotypic variation in a population is due to both genotype & environment  Phenotype = Genotype + Environment Sometimes Genetic differences among individuals 

Altruism

Altruism

Altruism – is “self-sacrificing” behavior Altruism lower’s the helper’s reproductive success while increasing the reproductive success of the individual being helped. Many insects like ants, termites and bees are sterile and do not reproduce So, how can individuals pass on genes if they can’t reproduce?  

Cricket Behavior

Cricket Behavior

Crickets Observation Materials: Plastic container with a cover punctured with holes  Small paper cup Sand Dry dog food Carrots Water 8 Crickets The Crickets were placed in the plastic container with damp sand, carrots on one side and dry dog food on the other side. The