Darwin and Natural Selection
Darwin and Wallace first observation's about population growth
what is populations initially grow exponentially but then eventually growth slows and stabilizes
Dinosaurs evolved into what modern day animal
Individuals within a population share common
What is Gene pool
earth is how old
what is 4.54 billion years old (4.5)
Four tenets of evolution by natural selection
what is
1 overproduction
2 variation
3 selection
4 adaptation
Darwin and Wallace's second observation about limited resources
what is different populations have to compete for resources, individuals that cannot obtain the resources they need will not survive.
What type of animals did whales evolve from
What is 4 legged land animals
The three main ways genetic variation is produced
What is mutations, genetic recombination during sexual reproduction and lateral gene transfer
deep time is
What is the vast concept of time since earth was created
Inference 3
What is if inference one and two are true then differences in survival and reproduction rates are non-random
Darwin and Wallace observation 3 and 4 about variety and heritability
what is individuals within a population can vary greatly in traits, many traits can be passed down from parent to offspring.
What can you infer by looking at stage one embryos of different species
What is common ancestor
Give 2 examples of each helpful harmful and neutral mutations (many answers—more than I listed) (half points for one of each, you can only get none, half, of full points)
What is
helpful — lactose tolerance, HIV Resistance
harmful— Down syndrome, sickle cell anemia
neutral— not having wisdom teeth, eye color
we don’t have many fossils from before 544 million years ago because
what is that is when hard body parts evolved
From the video we watched about antibiotics, antimicrobial drug resistance is where on the research priority list for the US government
What is 70th
inference 1
What is if populations grow exponentially but eventually even out and resources are limited then not all offspring produced survive to have offspring of their own because of competition for resources.
What are homologous structures and an example
What is similar body parts in different species with different functions
human hands bat wings and whale fins — they all have similar bone structures due to their common ancestry
Explain mutations, genetic recombination during sexual reproduction and lateral gene transfer
what is
Mutations are changes in an individuals genetic code that can be passed on to the next generation.
Genetic combination is when DNA molecules exchange, genetic material, producing new combinations of genes in offspring.
Lateral gene transfer is when one individual passes their genes to another individual who is not their offspring.
The oldest evidence of life is_____ from ____
what is the stromatolites and 3.5 billion years ago
the last ice age was ___ years ago
what is 2 million
Inference 2
What is If Individuals have different heritable traits and not all individual survive then some individuals are more likely to survive and reproduce due to their traits.
define vestigial structure and name four of them in humans
What is Vestigial structures are left over structures that lost their original function. Human appendix, human tailbone, wisdom teeth and male nipples
Provide three differences between single gene traits and polygenic traits. What is an example of both (many answers)
What is
Single gene traits are controlled by only one gene, produce only a few phenotypes and each phenotype is distinct from the other. Example: cleft chin vs no cleft chin.
polygenic traits are controlled by two or more genes, produce a wide spectrum phenotypes and phenotypes are not distinct from each other. Example: human height.
The earliest continents formed
What is 4 billion years ago
What happened 130 million years ago
What is first flowering plants