Question

10. Which of the following does NOT cause mutations?
11. The International Agency for Research on Cancer has classified ______ as a carcinogen.
(Its use before the age of 30 increases melanoma risk by 75%).
12. The trait ‘dollop’ is caused by a recessive gene (d). If the frequency of d is 0.3 in a
population, what is the expected frequency of dollop?

13. The longer two species have been evolving independently (since a common ancestor), the
greater the number of mutations that accumulate between them. In fact, the rate of change is
_______. This allows us to compare sequences from different individuals or species
and estimate the years since they had a common ancestor.
14. Which group is most distantly related to tuna (the longest time since they had a shared
ancestor)?

15. The fact that fish, penguins (birds), and dolphins (mammals) all have the same basic
shape (torpedo-like) is best explained by which of the following?
16. Which of the following is a statement that describes the concept of convergent evolution?
17. Anatomical similarities, like the number and structure of bones, among vertebrate forelimbs
suggests that all vertebrates evolved from a common ancestor. Possession of a trait in two or
more species derived from their common ancestor is known as?
18. Which of the following is NOT an example of a vestigial trait?
19. Where would I most likely find the oldest fossils in sedimentary rock?
20. The close relationship between fossil and extant (living) species from the same geographical
area, or between fossils within adjacent rock strata, is one of the oldest types of evidence for
evolution. It is called _____.

21. You are given a fossilized piece of wood by someone who tells you that it is has been
carbon-dated to ~20,000 years ago. Approximately how much of the original carbon-14
remains? Use 5,000 years as the half-life for carbon-14 to make the math easier.
22. Which of the following is true of lactose tolerance in adult humans?
23. How does natural selection cause evolution?
24. How do bacteria become antibiotic resistant?
25. Human birth weight is a classic example of:
26. Imagine that those who had children at a younger than average age tended to leave more
descendants than others. This continued to be true over hundreds of generations across the
planet. What else would evolve as a consequence?
27. Which is definitely an INCORRECT explanation for why we grow old?
28. Why is adaptation imperfect?
29. Anatomical similarities, like the number and structure of bones, among vertebrate
forelimbs suggests that all vertebrates evolved from a common ancestor.
30. Which are true of cancer cells?

If there isn't a real option just skip it ex:number 10 u don't need to answer it

Just answer the questions that make some sense I guess

Answer 1

11. The International Agency for Research on Cancer has classified UV-emitting tanning devices as a carcinogen. (Its use before the age of 30 increases melanoma risk by 75%).

13. The longer two species have been evolving independently (since a common ancestor), the greater the number of mutations that accumulate between them. In fact, the rate of change is constant. This allows us to compare sequences from different individuals or species and estimate the years since they had a common ancestor.

17. Anatomical similarities, like the number and structure of bones, among vertebrate forelimbs suggests that all vertebrates evolved from a common ancestor. Possession of a trait in two or more species derived from their common ancestor is known as? Homology

19. Where would I most likely find the oldest fossils in sedimentary rock?

Ans: Tiny ripples of sediment on ancient seafloor, captured inside a 3.7-billion-year-old rock in Greenland, may be the oldest fossils of living organisms ever found on Earth, according to a new study.

21. You are given a fossilized piece of wood by someone who tells you that it is has been carbon-dated to ~20,000 years ago. Approximately how much of the original carbon-14 remains? Use 5,000 years as the half-life for carbon-14 to make the math easier.

Solution:

8.898 % (If we take half actual half life of C-14 = 5730 yrs)

And if we take half-life of C-14 = 5000 (Use 5,000 years as the half-life for carbon-14 to make the math easier.)

Let x be the original carbon-14 remains

T = [In (x)/-0.693] * t1/2
20000 yrs = [In (x)/-0.693] * 5000
In (x) = 20000* -0.693 / 5000
In (x) = -2.772
X = 0.0625 = 6.25 %

6.25 % of the original carbon-14 remained in a fossilized piece of wood.