- All members of a beetle species having the same wing pattern.
- A population of deer exhibiting different running speeds.
- A species of plant always producing identical seeds.
- Identical twins growing to different heights due to diet.
No category found.
- Variation.
- Natural selection.
- Struggle for existence.
- Overproduction.
- Inherit a predisposition for musical talent.
- Be born with naturally more agile fingers.
- Develop similar dexterity only with intensive practice.
- Show no inherited physical advantage for piano playing.
- Puppies would be born with shorter tails.
- Puppies would be born without tails.
- Puppies would be born with normal tail length.
- Puppies would develop stronger muscles from carrying smaller tails.
- The presence of RNA in all modern organisms.
- RNA's ability to self-replicate and act as an enzyme (ribozyme).
- The fact that DNA is more stable than RNA.
- The discovery of complex proteins in early life forms.
- A fully developed nucleus.
- Limited self-replication and metabolism.
- Complex multicellularity.
- The ability to perform sexual reproduction.
- Volcanic activity.
- Deep-sea hydrothermal vents.
- Photosynthetic organisms.
- Formation of the ozone layer.
- Amino acids.
- Sugars.
- Purines and pyrimidines.
- Fully functional proteins or nucleic acids.
- The gradual change in species over generations, with common ancestry.
- Organisms losing complexity over time.
- Direct inheritance of acquired traits.
- The sudden appearance of new species without ancestors.
- Individual fish consciously adapted to the pollution.
- Fish inherited acquired detoxification abilities from their parents.
- Fish with pre-existing higher toxin tolerance survived better and reproduced more.
- The pollution directly caused favorable mutations in all fish.
- Lamarck focused on populations, Darwin on individuals.
- Lamarck proposed directed change, Darwin proposed undirected variation acted upon by selection.
- Lamarck believed in extinction, Darwin did not.
- Lamarck emphasized genetic mutations, Darwin emphasized environmental influence.
- Species are immutable and unchanging.
- New species arise directly from the environment.
- Organisms adapt to their specific environments through natural selection.
- Acquired characteristics are passed down through generations.
- Be born with stronger, more efficient running muscles.
- Develop stronger muscles only with similar training.
- Show a decrease in intelligence due to focus on physical activity.
- Exhibit no inherent changes in physical prowess related to parental training.
- Organs that are used more frequently become stronger and larger.
- Unused organs are shed from the organism.
- Only organs used in reproduction can be inherited.
- Genetic mutations lead to changes in organ size.
- Directly absorb energy from sunlight.
- Synthesize their own inorganic compounds.
- Harness energy from chemical reactions to sustain themselves.
- Migrate to new environments for survival.
- Lightning was not a powerful enough energy source.
- The atmosphere may not have been as reducing as initially thought.
- There were no oceans for the "primordial soup" to form.
- Organic molecules would have been too unstable to persist.
- The first true prokaryotic cells.
- Self-assembled, membrane-bound sacs of organic molecules, believed to be precursors to living cells.
- Cells that developed the ability to photosynthesize.
- The simplest forms of eukaryotic cells.
- Descent with modification.
- Common ancestry.
- Inheritance of acquired characteristics.
- Struggle for existence.
- All finches will learn to eat the hard seeds, and their beaks will strengthen.
- Finches with smaller, weaker beaks will reproduce more successfully.
- Finches with larger, stronger beaks will be favored, leading to an increase in their proportion in the population.
- The entire finch population will die out due to starvation.
