Earth's Calendar
The Month we are currently in, according to Earth's Timeline Calendar.
What is December?
The fowl species closest related to the Trex.
What is Chicken?
Scientists study the similar bone structure in a bat's wing, a dolphin's flipper, and a human arm to understand the process of evolution. This field of study is called ___.
What is comparative anatomy?
The dominant gene of Dd.
What is [Capital] D?
The scientific term for an abnormality in DNA.
What is Mutation?
The longest unit of geologic time that covers Earth's formation up to 541 million years ago, when life was just beginning.
What is the Precambrian Eon?
Scientists compare the DNA of dogs and wolves to prove they share one of these.
What is a common ancestor?
Over many generations, a population of rabbits in a snowy area might evolve to have white fur instead of brown, experiencing __.
What is adaptation?
This chart, shaped like a diamond, helps predict possible offspring traits.
What is a Punnett square?
A Polar Bear's white fur helps it blend into snow while hunting—an example of ___.
What is camouflage?
Dinosaurs ruled during these three periods.
What are the Triassic, Jurassic, and Cretaceous periods?
These preserved remains of ancient life, like dinosaur bones, show how species changed over time.
What are fossils?
This process, driven by environmental pressures, leads to the reproduction of organisms best suited to their environment.
What is natural selection?
If a brown-eyed parent (BB) and a blue-eyed parent (bb) have a child, this is the child's eye color genotype.
What is Bb?
A porcupine's quills or a turtle's hard shell help it survive by providing this type of adaptation.
What is a physical adaptation?
The "Great Dying" event 252 million years ago wiped out 90% of ocean life, ending the Paleozoic Era.
What is the Permian-Triassic Extinction?
The study of developing embryos (like comparing fish and human embryos) is called ___.
What is embryology?
A term that describes structures in different species that share a common ancestry, like the wings of bats and the arms of humans.
What are homologous structures?
A dog's floppy ears or a person's freckles are examples of these observable characteristics.
What are phenotypes?
When birds fly south for winter or bears hibernate, they're using this type of survival behavior.
What is a behavioral adaptation?
The Phanerozoic Eon's three eras (Paleozoic, Mesozoic, Cenozoic) are divided by these two major extinctions.
What are the Permian and Cretaceous-Paleogene (K-Pg) Extinctions?
This "timeline" of fossils in rock layers helps scientists track Earth’s history and evolution.
What is the geologic time scale?
Scientists use this "tree" of species to show how whales evolved from land mammals over millions of years.
What is an evolutionary tree?
When one allele "overpowers" another (like brown eyes over blue), it’s called this type of allele.
What is dominant?
Scientists use this term to describe ALL genes (like fur color, size, etc.) available in a population.
What is the gene pool?