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CRUSTACEANS OR WHATEVER HELP - Printable Version

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CRUSTACEANS OR WHATEVER HELP - Trar - 01-06-2009 11:45 AM

So I got these questions. You know what to do.


1. List three general kinds of observations that Darwin made during the voyage of the Beagle.

2. Contrast Galapagos iguanas to South American iguanas.

3. What is an adaptation? Explain how the claws of the Galapagos and South American iguanas are adaptations.

4. How did Darwin explain why Galapagos species had different adaptations than similar South American species?

5. How does selective breeding support Darwin's hypothesis?

6. What is a variation? What is natural selection?

7. How do variation and natural selection work together to help cause evolution?

8. Suppose the climate in an area becomes much drier than it was before. What kinds of variations in the area's plants might be acted on by natural selection?

9-11. Needs the following chart:

INHERITANCE OF HAIR LENGTH IN CATS
H = short hair h = long hair
Eggs
h h
Sperm H | Hh| Hh|
h | hh| hh|

9. What are the genotypes of the offspring? What are their phenotypes?

10. What percentage of the offspring will have short hair? What percentage will have long hair?

11. Suppose the heterozygous short-haired cat parent were replaced with a homozygous short-haired cat. What would be the genotypes of the offspring? What would be their phenotypes?

12. Describe what occurs during the process of protein synthesis.

13. Why is messenger RNA necessary for protein synthesis?

14. Explain how you could determine whether the seeds ina packet of round pea seeds have the genotype RR or Rr, in which R represents round seeds and r represents wrinkled seeds.


Re: CRUSTACEANS OR WHATEVER HELP - Alucard483 - 01-06-2009 02:06 PM

Trar Wrote:So I got these questions. You know what to do.


1. List three general kinds of observations that Darwin made during the voyage of the Beagle.

2. Contrast Galapagos iguanas to South American iguanas.

3. What is an adaptation? Explain how the claws of the Galapagos and South American iguanas are adaptations.

4. How did Darwin explain why Galapagos species had different adaptations than similar South American species?

5. How does selective breeding support Darwin's hypothesis?
Natural selection. If a certain trait increases the survival rate of an animal it is more likely to grow to adulthood and mate, thus passing this favored trait down in the gene pool.
6. What is a variation? What is natural selection?
Variation is just what it sounds like, variation of traits. Natural selection, seee above.
7. How do variation and natural selection work together to help cause evolution?
See no. 5
8. Suppose the climate in an area becomes much drier than it was before. What kinds of variations in the area's plants might be acted on by natural selection?
Plants that require less water would survive in the new habitat better and thus become 'favored' in traits. Natural selection would then kill off the less suited ones and after a while you only have a catus.

9-11. Needs the following chart:

INHERITANCE OF HAIR LENGTH IN CATS
H = short hair h = long hair
Eggs
h h
Sperm H | Hh| Hh|
h | hh| hh|

9. What are the genotypes of the offspring? What are their phenotypes?
Going clockwise from top left, [G= H, P= Hh], [G=H, P=Hh], [G=h, P=hh], [G=h, P=hh]
10. What percentage of the offspring will have short hair? What percentage will have long hair?
50% for both
11. Suppose the heterozygous short-haired cat parent were replaced with a homozygous short-haired cat. What would be the genotypes of the offspring? What would be their phenotypes?
All genotypes are short-hair, all phenotypes are Hh
12. Describe what occurs during the process of protein synthesis.

13. Why is messenger RNA necessary for protein synthesis?

14. Explain how you could determine whether the seeds in a packet of round pea seeds have the genotype RR or Rr, in which R represents round seeds and r represents wrinkled seeds.
Fucking plant them
Bolded is answers. I hold no responsibility if you get them wrong, bio was four years ago.