Exam 2 Flashcards
Mitosis
One cell splits into two and all the chromosomes are the same.
Meiosis
One cell splits into four and all have halve the chromosomes.
Law of segregation
There are two factors in every trait. One dominate and one recessive passed through gametes.
Law of independent assortment
traits are inherited independently
RNA
A nucleic acid present in all living cells.
Transcription
Coping the genetic process from DNA to RNA.
Translation
The process of converting info from RNA bases to amino acids.
absolute dating
gives a date in years using isotopes
RNA world hypothesis
RNA was one of the first organic molecule
Permian extinction
90% of life extinct
Binomial nomenclature
A two word name for each species
phylogenic classification
classification based on evolutionary history
adaptive radiation
a single species evolves into many new species
ecology
study of how things interact with the enviroment
niche
role of a species in a ecosystem
competitive exclusion princible
two species cannot occupy the same niche for long
trophic levels
the feeding positions in a food chain or web
consumers
herbivores, carnivores, omnivores, decomposers, scavengers, detritivores, seprotrophs
carbon cycle
carbon moves from one resovour to another
community
all bionic parts of an ecosystem
ecological succession
how population change through time
demographics
study of populations and how they grow
sporophytes
seeds and pollen
vascular plants
plants on land
plant tissue
dermal - outer layer
ground - internal plant
vascular - runs through ground tissue
