HAPPY THURSDAY List your 3 Genetic Modifications from your Sweet Potato Farm. How would it be...

HAPPY THURSDAY • List your 3 Genetic Modifications from your

Sweet Potato Farm.• How would it be possible for future potato

generations to keep the same traits of your genetically modified potatoes.

RECOMBINATION

Buff Binder Check

Happy Thursday

Get out I.A.N on Page 45 and copy down EXACTLY what

you see on the board.

Make two/three columns.

1.

2.

3.

4.

5.

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7.

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10.

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12.

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Name: 20.

21.

22.

23.

24.

25.

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27.

28.

29.

30.

31.

32.

33.

34.

35.

36.

37.

Today’s Activity: Review Stations• You will work with a partner and answer the

questions in the hallway.

• You MAY use your notes.

• Be sure to fill out the correct answers on the correct stations.

• You must complete each station—right or wrong—to receive ANY credit for today’s grade.

1. _______________ is defined as change in a gene pool over time.

• artificial selection• natural selection• homologous structures• vestigial organs• Darwin• Lamarck

• adaptation• evolution• common descent• descent with modification• fitness• biological diversity

2. _______________ contributed more to our understanding of evolution than

anyone else.



3. _______________is selection by humans for breeding of useful traits

from the natural variation among different organisms.



4. _______________ is the ability of an organism to survive and reproduce in

its environment.



5. An _______________ is any inherited characteristic that increases

an organism’s chance of survival.



6. Individuals with characteristics that are not well suited to their environment die. Individuals that

are better suited to their environment survive and reproduce most successfully. Darwin called this

process _______________.



7. _______________ is a principle that each living species has descended, with changes, from other species over time.



8. According to the principle of _______________, all species – living

and extinct – were derived from common ancestors.



9. The following phrases are from a game of telephone. Which biology concept(s) does this illustrate?

1. Dark forest 2. Dark force3. Damp forest4. Dan put forest

10. A population of tortoises inhabits an island filled with small shrubby bushes and vegetation that is located off of the ground. Within the population of tortoises are individuals with short,

medium, and long necks. Which of the individuals will leave behind the most offspring?

11. A type of antibiotic is used to fight an nasty sinus infection. The 10 day

prescription kills 99% of the bacteria. The patient feels better but in a few days their infection is back from the

remaining bacteria reproducing. Explain why the doctor would not

prescribe the same antibiotic.

12. Copy the statement and indicate if it is true or false

Natural selection will occur more quickly when resources are limited.


Natural selection will occur more quickly when populations reproduce

slowly


Natural selection will occur more quickly when competition is minimal


Natural selection will occur more quickly when populations have many

genetic variations

16. Indicate (Y/N) if the situation would cause natural selection to occur for each situation.

A. Limited amount of food supply

B. Decreased competition for mates

C. Reduced material and space for shelter

D. Increased fighting for resources

17. How is the organism in the

picture adapted to its environment?

18. How is the organism in the picture adapted to its environment?

19. Explain how humans caused wolves to evolve into dogs.

20. Which type of

selection is modeled by the blue and green lines?a. Stabilizingb. directionalc. disruptive

21. In shallow water among rocks light-colored oysters are less easy for a predator to see because they match the rock color. Dark-colored oysters blend into the shadows cast by the rocks. Intermediate-colored oysters are most heavily preyed upon by the crabs, and very light and very dark oysters survive to reproduce

Which type of selection is modeled above?a. stabilizing b. directional c. disruptive

Sad, but True

22. It is well known that early mortality is common for extreme birth weights. Both very large and very small infants suffer high mortality rates. This is an example of ______________ selection.

a. stabilizing b. directional c. disruptive

23. Why are mutations important in all species?

24. Which of the following is not evidence of a common ancestor?

• Vestigial Structures• Same biogeography• Similar embryonic structures• Similar gene sequences• Similar prey• Homologous structures

25. Which of the following can not be learned from the fossil record?

(2 answers)

• Where an organism lived• The ancestors of organisms• The chronological order of their existence• The full range of their variations• The climate in which they existed• All the different species that existed

26. Name that term!

• What do we call the geographical distribution of a species?

27. Which of the following does not apply to Natural selection?(4 answers)

• Survival advantage• Survival disadvantage• Phenotype• Genotype• Choice traits/adaptations• Change in Individuals• Acquired traits• Variety• Competition

• Over Reproduction• Inherited Traits• Sudden Change• Change in Populations• Mutations

28. Scientists at Texas A&M University have discovered how to insert a “maroon gene” into the genetic material of a Bluebonnet that causes it to grow maroon-colored. As this flower reproduces, it forms additional maroon flowers. Which evolutionary process is represented in this scenario? (hint: today’s bellwork)

29. Short answer

• Why is variation important in a species?

30. A wildflower population consisting of blue, purple, and pink flowers is subjected to a mudslide that kills most of the blue ones. As time progresses, blue flowers eventually die out, leaving only purple and pink wildflowers.This is an example of

A. Bottleneck effect B. SpeciationC. Genetic drift D. Gene Flow

31. How does Genetic Drift differ from natural selection?

A. Founder Effect B. Bottleneck effectC. Co-Evolution D. Convergent Evolution

E. Divergent Evolution F. Genetic Drift

32. The North American kangaroo rat, Australian hopping mouse, and North African and Asian jerboa have developed adaptations for hot desert environments; these include a small rounded body shape with very large hind legs and long thin tails, a characteristic bipedal hop, and nocturnal, burrowing and seed-eating behaviors.

http://en.wikipedia.org/wiki/Kangaroo_rat

http://en.wikipedia.org/wiki/Hopping_mouse

http://en.wikipedia.org/wiki/North_Africa

http://en.wikipedia.org/wiki/Jerboa

http://en.wikipedia.org/wiki/Bipedal



33. The Afrikaner population of Dutch settlers in South Africa is descended mainly from a few colonists from the Netherlands. Today, the Afrikaner population has an unusually high frequency of the gene that causes Huntington’s disease, because those original Dutch colonists just happened to carry that gene with unusually high frequency.


E. Divergent Evolution F. Genetic Drift34. A human foot evolved to be very different from a monkey's foot, despite their common primate ancestry. It is speculated that a new species (humans) developed because there was no longer was a need for swinging from trees. Upright walking on the ground required alterations in the foot for better speed and balance. These differing traits soon became characteristics that evolved to permit movement on the ground. Although humans and monkeys are genetically similar, their natural habitat required different physical traits to evolve for survival.

http://science.jrank.org/pages/4427/Monkeys.html

http://science.jrank.org/pages/3184/Habitat.html



35. American bison were once very prevalent in North America, but were hunted close to extinction in the late 1800's. Though the population is recovering, the rapid decrease in population size has led to a population with very little genetic variability



36. One single rough-skinned newt produces enough toxins to kill 100 humans. So you would think that nothing could eat these animals, but you would be wrong! Common garter snakes are able to eat these newts. Over time, these snakes have become resistant to the toxins of these newts.



37. As the result of a catastrophic earthquake, many brown-haired people are killed, but a proportionately lower number of blonde-haired people are killed, resulting in the births of more blonde-haired babies.

Answer key

1. evolution is defined as change over time.



2. Darwincontributed more to our understanding

of evolution than anyone else.



3. artificial selectionis selection by humans for breeding of useful traits from the natural variation

among different organisms.



4. fitness is the ability of an organism to survive and reproduce in its

environment.



5. An adaptation is any inherited characteristic that increases an organism’s chance of survival.



6. Individuals with characteristics that are not well suited to their environment die. Individuals that are

better suited to their environment survive and reproduce most successfully. Darwin called this

process natural selection.



7. descent with modification is a principle that each living species has descended, with changes, from other species over time.



8. According to the principle of common descent, all species – living and extinct – were derived from common ancestors.



9. The following phrases are from a game of telephone. Which biology concept(s) does this illustrate? evolution

1. Dark forest 2. Dark force3. Damp forest4. Dan put forest

10. A population of tortoises inhabits an island filled with small shrubby bushes and vegetation that is located off of the ground. Within the population of tortoises are individuals with short, medium,

and long necks. Which of the individuals will leave behind the most offspring? Long necks

11. A type of antibiotic is used to fight an nasty sinus infection. The 10 day prescription kills 99% of the bacteria. The patient feels better but in a

few days their infection is back from the remaining bacteria reproducing. Explain why

the doctor would not prescribe the same antibiotic.

The 1% of bacteria that survived was immune and passed on the “immunity trait” to the new population

of bacteria. (natural selection)

12 - 15. Copy the statement and indicate if it is true or false

12. Natural selection will occur more quickly when resources are limited True13. Natural selection will occur more quickly when populations reproduce slowly False14. Natural selection will occur more quickly when competition is minimal False15. Natural selection will occur more quickly when populations have many genetic variations False

16. Indicate (Y/N) if the situation would cause natural selection to occur.

• Limited amount of food supply Yes• Decreased competition for mates No• Reduced material and space for shelter Yes• Increased fighting for resources Yes

17. How is the organism in the picture adapted to its

environment?Spines protect from

predators, no leaves (stores water in the plant), etc.

18. How is the organism in the picture adapted to its environment?

Smell discourages predators, coloring discourages predators

19. Explain how humans caused wolves to evolve into dogs.

People only bred wolves with traits they wanted (cuteness, tameness, etc). Over many generations wolves evolved into

dogs.

20. Which type of selection is modeled by the blue and green lines?

a. stabilizingb. directionalc. disruptive

21. In shallow water among rocks light-colored oysters are less easy for a predator to see because they match the rock color. Dark-colored oysters blend into the shadows cast by the rocks. Intermediate-colored oysters are most heavily preyed upon by the crabs, and very light and very dark oysters survive to reproduce

Which type of selection is modeled above?a. stabilizing b. directional c. disruptive

Sad, but True

22. It is well known that early mortality is common for extreme birth weights. Both very large and very small infants suffer high mortality rates. This is an example of ___________ selection.

a. stabilizing b. directional c. disruptive

23. Why are mutations important in all species?

Mutations are the source of new traits.

24. Which of the following is not evidence of a common ancestor?

• Vestigial Structures• Same biogeography• Similar embryonic structures• Similar gene sequences• Similar prey• Homologous structures

25. Which of the following can not be learned from the fossil record?

(2 answers)

• Where an organism lived• The ancestors of organisms• The chronological order of their existence• The full range of their variations• The climate in which they existed• All the different species that existed

26. Name that term!

• What do we call the geographical distribution of a species?

Biogeography

27. Which of the following does not apply to Natural selection?(4 answers)

• Survival advantage• Survival disadvantage• Phenotype• Genotype• Choice

traits/adaptations• Change in Individuals• Acquired traits

• Variety• Competition• Over Reproduction• Inherited Traits• Sudden Change• Change in Populations• Mutations

28. Scientists at Texas A&M University have discovered how to insert a “maroon gene” into the genetic material of a Bluebonnet that causes it to grow maroon-colored. As this flower reproduces, it forms additional maroon flowers. Which evolutionary process is represented in this scenario? (hint: today’s bellwork)

Recombination

29. Short answer

• Why is inherited variation important in a species?

It is essential for natural selection to result in a new species.

30. A wildflower population consisting of blue, purple, and pink flowers is subjected to a mudslide that kills most of the blue ones. As time progresses, blue flowers eventually die out, leaving only purple and pink wildflowers.This is an example of

A. Bottleneck effect B. SpeciationC. Genetic drift D. Gene Flow

31. How does Genetic Drift differ from Natural Selection?

Genetic Drift are organisms dying by chance. Natural Selection is organisms being selected by nature/environment for specific traits that are well adapted to that habitat.



32. The North American kangaroo rat, Australian hopping mouse, and North African and Asian jerboa have developed adaptations for hot desert environments; these include a small rounded body shape with very large hind legs and long thin tails, a characteristic bipedal hop, and nocturnal, burrowing and seed-eating behaviors.

http://en.wikipedia.org/wiki/Kangaroo_rat

http://en.wikipedia.org/wiki/Hopping_mouse

http://en.wikipedia.org/wiki/North_Africa

http://en.wikipedia.org/wiki/Jerboa

http://en.wikipedia.org/wiki/Bipedal



33. The Afrikaner population of Dutch settlers in South Africa is descended mainly from a few colonists from the Netherlands. Today, the Afrikaner population has an unusually high frequency of the gene that causes Huntington’s disease, because those original Dutch colonists just happened to carry that gene with unusually high frequency.


E. Divergent Evolution F. Genetic Drift34. A human foot evolved to be very different from a monkey's foot, despite their common primate ancestry. It is speculated that a new species (humans) developed because there was no longer was a need for swinging from trees. Upright walking on the ground required alterations in the foot for better speed and balance. These differing traits soon became characteristics that evolved to permit movement on the ground. Although humans and monkeys are genetically similar, their natural habitat required different physical traits to evolve for survival.

http://science.jrank.org/pages/4427/Monkeys.html

http://science.jrank.org/pages/3184/Habitat.html



35. American bison were once very prevalent in North America, but were hunted close to extinction in the late 1800's. Though the population is recovering, the rapid decrease in population size has led to a population with very little genetic variability



36. One single rough-skinned newt produces enough toxins to kill 100 humans. So you would think that nothing could eat these animals, but you would be wrong! Common garter snakes are able to eat these newts. Over time, these snakes have become resistant to the toxins of these newts.



37. As the result of a catastrophic earthquake, many brown-haired people are killed, but a proportionately lower number of blonde-haired people are killed, resulting in the births of more blonde-haired babies.

HAPPY THURSDAY List your 3 Genetic Modifications from your Sweet Potato Farm. How would it be...

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