Unit 3 Topic 1
This level of classification groups organisms based on shared structural features.
taxonomic class
This term describes organisms that obtain energy by consuming other organisms.
Heterotrophs
Which base pairs with adenine during DNA replication?
Thymine.
This term describes the passing of traits from one generation to the next.
inheritance
The term "clade" is defined as?
A group of living things that includes one single common ancestor and all of that ancestor's descendants.
This concept describes the number of different species present in an ecosystem.
Species Richness
This process describes how ecosystems change over time following disturbance.
Ecological succession
This structure carries genetic information in the form of DNA.
Chromosome
This concept explains how populations change genetically over time.
Evolution
This term describes the movement of water into a cell, causing it to swell.
hypotonic solution
This curve shows population growth when resources are unlimited.
Exponential Growth
This type of succession begins on surfaces where no soil exists.
Primary Succession
This term describes the physical expression of a genotype.
Phenotype
Speciation is more likely to occur between two populations when gene flow is high/low and selection pressures are similar/different.
Speciation is more likely to occur between two populations when gene flow is low and selection pressures are different.
This relationship occurs when one organism benefits and the other is unaffected.
commensalism
This measure combines species richness and evenness to quantify biodiversity.
Simpson's Diversity Index
This term describes species that first colonise disturbed environments and modify conditions for later species.
Pioneer Species
This process produces gametes with half the number of chromosomes.
Meiosis
This mechanism increases genetic variation through random changes in DNA.
Mutations
This concept explains how traits that do not affect survival may still spread through a population due to mate preference.
Sexual Selection
This concept describes how genetic variation within a population increases resilience to environmental change.
Genetic Diversity
This model explains how energy flows through ecosystems, showing efficiency losses between trophic levels.
10% rule of energy transfer
This inheritance pattern occurs when both alleles influence the phenotype, producing a blended appearance.
Incomplete dominance
This evolutionary process occurs when random events drastically reduce population size, altering allele frequencies.
Genetic Bottleneck
This biochemical phenomenon explains how enzymes with completely different amino‑acid sequences can evolve to perform the same catalytic function due to similar selective pressures.
functional enzyme convergence