Lecture 3 Flashcards
What determines how tall someone is ?
- genertics
- environmental factors
- nutrition
What are Traits with no genetic component?
Traits with phenotypes determined only by their environment (i.e, language)
What is a Heritable Trait?
Traits with phenotypes that are genetically inherited from biological parents (i.e, eye colour, hair)
What is Heritability?
A measure of how important genetics are to determining traits
Why do scientists love to put things into different categories or ‘bins’?
- It helps to understand the relationships between things and make new hypotheses/predictions in new contexts
What is Phenotypic Plasticity?
When the exact same genotype produces different phenotypes under different environments
What is an example of phenotypic plasticity?
You are growing plants that are genetically identical, but you grow one in high light and the other in low light.
After a few days the high light plant is tall and the low light plant is short
What is sexual dimorphism?
When females and males look different (i.e, think anglerfish)
Traits are sexually dimorphic if they?
Vary between different sexes in a species and are only relevant for dioecious species (species that have separate males and females)
What does Taxonomic Hierarchy consist of?
Kingdom
Phylum
Class
Order
Family
Genus
Species
What is a Biosphere?
Regions of Earth’s crust, waters, and atmosphere inhabited by living things
Ecosystem
A community plus the physical environment
Community
Interacting Populations
Population
Organism of the same species
Organism
An individual; complex individual composed of organ systems
