BSC 170- Exam 3 2024/2025 Exam
Questions with 100% Correct Answers |
Latest Update
Who proposed evolution through natural selection as a mechanism -
🧠ANSWER ✔✔- Charles Darwin in his book "The Origin of Species"
- Life has adapted to be successful in many conditions
- Evolutions through natural selection is the central idea of understanding
biology= explains diversity of humans
The role of random mutations and non-random selection in evolution -
🧠ANSWER ✔✔- evolution via natural selection is not a random process
- new alleles arise through random mutation
- mutation causes new allele/traits= random or semi random
- selection is not random
-environment determines if a trait is successful
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,Evolution results from changes in allele frequency in a population -
🧠ANSWER ✔✔- evolution= change in allele frequency in a population over
time
- if allele freqiency has changed then evolution has happened
-if you want to change the allele frequency= change the environment
-biological success=DNA living on/having offspring
- some organisms will be better to compete for food, shelter, mates, and
iron
-traits making those organisms more competitive are passed on via
heredity (genetics)
-offspring of the more competitive organisms are more likely to express
these traits= present in greater abundance in subsequent generations
What do scientist mean by theory? - 🧠ANSWER ✔✔theory is a well tested,
comprehensive explanation of how something works and is well supported
ex: gravity is a theory
Misconceptions about evolution: Transitional Fossils - 🧠ANSWER ✔✔-
argument: no transitional fossils to fill in the gaps
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, -but there is evidence!
-evolution of whales (used to be dog like animal)
- little changes that resulted in whales
- are transitional fossils logical
Misconceptions about evolution: Humans evolving from apes - 🧠ANSWER
✔✔-chimps and humans evolved from a common ancestor
-almost identical at DNA level
Misconceptions about evolution: Second Law of thermodynamics -
🧠ANSWER ✔✔-2nd law of thermodynamics says that you cannot increase
complexity in a system that is closed (going from a single cell to something
more complex)
-entropy= opposite of order
-Earth is not a closed system! energy from the sun overcomes entropy=
sun brings in energy which means it is not a closed system
Misconceptions about evolution: Irreducible complexity - 🧠ANSWER
✔✔Idea that biological structures are so complex that removal of one
COPYRIGHT©JOSHCLAY 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE. PRIVACY
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STATEMENT. ALL RIGHTS RESERVED
Questions with 100% Correct Answers |
Latest Update
Who proposed evolution through natural selection as a mechanism -
🧠ANSWER ✔✔- Charles Darwin in his book "The Origin of Species"
- Life has adapted to be successful in many conditions
- Evolutions through natural selection is the central idea of understanding
biology= explains diversity of humans
The role of random mutations and non-random selection in evolution -
🧠ANSWER ✔✔- evolution via natural selection is not a random process
- new alleles arise through random mutation
- mutation causes new allele/traits= random or semi random
- selection is not random
-environment determines if a trait is successful
COPYRIGHT©JOSHCLAY 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE. PRIVACY
1
STATEMENT. ALL RIGHTS RESERVED
,Evolution results from changes in allele frequency in a population -
🧠ANSWER ✔✔- evolution= change in allele frequency in a population over
time
- if allele freqiency has changed then evolution has happened
-if you want to change the allele frequency= change the environment
-biological success=DNA living on/having offspring
- some organisms will be better to compete for food, shelter, mates, and
iron
-traits making those organisms more competitive are passed on via
heredity (genetics)
-offspring of the more competitive organisms are more likely to express
these traits= present in greater abundance in subsequent generations
What do scientist mean by theory? - 🧠ANSWER ✔✔theory is a well tested,
comprehensive explanation of how something works and is well supported
ex: gravity is a theory
Misconceptions about evolution: Transitional Fossils - 🧠ANSWER ✔✔-
argument: no transitional fossils to fill in the gaps
COPYRIGHT©JOSHCLAY 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE. PRIVACY
2
STATEMENT. ALL RIGHTS RESERVED
, -but there is evidence!
-evolution of whales (used to be dog like animal)
- little changes that resulted in whales
- are transitional fossils logical
Misconceptions about evolution: Humans evolving from apes - 🧠ANSWER
✔✔-chimps and humans evolved from a common ancestor
-almost identical at DNA level
Misconceptions about evolution: Second Law of thermodynamics -
🧠ANSWER ✔✔-2nd law of thermodynamics says that you cannot increase
complexity in a system that is closed (going from a single cell to something
more complex)
-entropy= opposite of order
-Earth is not a closed system! energy from the sun overcomes entropy=
sun brings in energy which means it is not a closed system
Misconceptions about evolution: Irreducible complexity - 🧠ANSWER
✔✔Idea that biological structures are so complex that removal of one
COPYRIGHT©JOSHCLAY 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE. PRIVACY
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STATEMENT. ALL RIGHTS RESERVED
