How would the genetic traits of a population change in response to an environmental pressure such as overfishing?

1 answer:

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Overfishing can be defined as the catching of more fish from a single population ... Some commercially important stocks are in such a critical state that all fishing has .... than protecting the marine environment and conserving fish populations. .... Heavy fishing pressures can change the genetic characteristics of a population:.

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Bart Simpson saw bats catching insects after dark. He asked, "How do bats find the insects in the dark?"

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Answer: c. question

Explanation:

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2 years ago

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Is the reduced form of cytochrome c more likely to give up its electron to oxidized cytochrome a or cytochrome b, why? Provide a

Vadim26 [7]

Answer:

The reduced form of cytochrome c more likely to give up its electron to oxidized cytochrome a having a higher reduction potential.

Explanation:

Electrons from NADH and FADH2 flow spontaneously from one electron carrier of the electron transport chain to the other. This occurs since the proteins of the ETC are present in the order of increasing reduction potential. The reduced cytochrome b has lower reduction potential than cytochrome c1 which in turn has a lower reduction potential than the cytochrome c.

Cytochrome c is a soluble protein and its single heme accepts an electron from cytochrome b of the Complex III. Now, cytochrome c moves to complex IV which has higher reduction potential and donates the electron to cytochrome a which in turn passes the electrons to O2 via cytochrome a3.

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3 years ago

A) In how many cases in the genetic code would you fail to know the amino acid specified by a codon if you knew only the first t

Vesna [10]

Answer:

a) 28 cases

b) 3 cases

Explanation:

a) From the table of genetic codes, there are 28 codons that specify more than one amino acid assuming only the first two nucleotides are considered. In these cases, one cannot outrightly specify the amino acid the genetic codes are coding for without knowing the last nucleotide of the codes. For example, UU can be for Phenylalanine or Leucine, CA can be for Histidine or Glutamine, etc.

b) From the table of genetic codes, the first two nucleotides of Arginine can be either of CG or AG, that of Serine can be either of UC or AG while that Leucine can be either of CU or UU. Only in these 3 cases would one fail to know which are the first two nucleotides assuming the name of the amino acids are given.

See the attached image for the genetic code.

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2 years ago

All living things have DNA. What about DNA determines the type of organism it will become?

kakasveta [241]

The answer would be A. the arrangement of DnA

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3 years ago

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6. Before transferring sperm to the female during mating, the males of some species of beetles use their copulatory organs to re

scZoUnD [109]

Answer: Mechanical Isolation

Explanation:

Mechanical isolation is a type of barrier that prevents the species that are closely related from mating with each other.

It is used in case of plants and animals(here beetles) in which the without compatible sex organs individual of different species will not be able to mate and produce offspring.

Thus, the correct answer is option C

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2 years ago