All about genetic variation
A play with words
I hope you were paying attention
Are you a critical thinker?
The shrinking wild
100
Genetic variation can come from ________ or __________.
mutations or sexual reproduction
100
The trait that helps an organism survive and reproduce in its environment is called this.
adaptation
100
____________ is a selection pressure that made it harder for hawksbeard with feathery seeds to survive and reproduce.
fragmentation
100
If climate change makes an environment hotter, which trait (thick fur or thin fur) may be selected for, and why?
thin fur, because it helps with heat tolerance
100
What selection pressure is impacting the Florida Panthers and mountain lions?
Urbanization/ fragmentation
200
During meiosis ____ _____ produces new combinations of alleles on chromosomes.
crossing over
200
When organisms with traits better suited for their environment survive and reproduce more successfully.
natural selection
200
A gene is expressed through what process?
gene expression or protein synthesis
200
The scientist known as the “Father of Evolution.”
Charles Darwin
200
What does the standard deviation (sd) tell us about the fish using the fish ladder?
There is less variation in the size of the fish using the ladder in 2000 than the fish using the ladder in 1965.
300
A mutation in the DNA happens during the _________ of the cell cycle.
S phase
300
Things in an environment that makes it harder for some individuals in a population to reproduce.
selection pressure
300
The Common Garden Experiment helped us learn that boldness in Juncos is ___________.
inherited
300
A student says organisms evolve traits because they “need” them. Why is this incorrect?
Traits appear randomly and natural selection favors the helpful ones.
300
What is the impact of reduced genetic diversity on the Florida panthers?
Defective sperm, heart condition, susceptibility to diseases
400
Genetic variations can either be _________, __________, or ___________.
anatomical, physiological or behavioral
400
Boldness is considered to be a _________ _________ that makes it more likely for them to survive and reproduce.
behavioral adaptation
400
CORT is a ________ that measures the stress levels in birds and other animals.
hormone
400
Students use generational models to see how advantageous traits become more common. This change in trait frequencies is called…
evolution
400
Name two strategies used to connect fragmented populations
Fish ladders, Wildlife corridors, green roofs, landscaping native plants
500
____________ is happening during the S phase of the cell cycle.
DNA replication
500
Producing non feathery seeds was a __________ __________ that helped hawksbeard survive and reproduce more.
anatomical adaptation
500
Evolution does not happen through individuals but through ___________.
generations
500
Bacteria that survive an antibiotic and reproduce show this process happening today.
antibiotic resistance
500
Use the graphs below and choose the best response. Imagine you caught 100 fish in 1965 and then caught 100 fish in 2000. How would you expect the variety of lengths in the fish to be different between the 2 years?
The 100 fish caught in 2000 would be more similar in length than the 100 fish caught in 1965