1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Kaylis [27]
3 years ago
8

A true reversion occurs when the wild-type DNA sequence is restored to encode its original message by a second mutation at the s

ame site or within the same cod on. Which of the following isoleucine codon(s) could be mutated once to form a methionine codon, and then mutated at a second site to restore an isoleucine codon? Select all that apply. (Note that two different positions in the codon must be mutated.)
AUC
AUU
AUA
none of these codons
Biology
1 answer:
olchik [2.2K]3 years ago
8 0

Answer:

none of these codons

Explanation:

In order for mutation to occur to form methionine codon from an isoleucine codon, position 3 must be changed to a G, giving AUG. A secind mutation would then be required at a second site in the AUG codon. since the isoleucine codons, AUA, AUC and AUU does not have a G at position 3, a true reversion can't occur without mutating the position 3 again.

You might be interested in
What does it mean when a ladybug has no spots?
Leno4ka [110]
Ladybugs are among the 450,000 species of beetles. They vary with size, color, number of spots, and color of the spots. Asian beetles, which are the ladybugs with no spots, are what you are probably seeing.

The spots and the color are used as a warning for predators, such as many poisonous frogs.
4 0
3 years ago
PLEASE JUST ANSWER DO NOT ATTACH IMAGE
anzhelika [568]

Answer:

D

Explanation:

Im not exactly for sure on this one, but if i were you, i would choose either A or D . Homeostasis is like the normal for something when they it isnt sick. Its when they are doing good with not really any concerns!

4 0
3 years ago
Read 2 more answers
The function of the nervous system is to A) help protect the body from disease. B) bring oxygen, nutrients and hormones to cells
Andrews [41]
If I'm not mistaken it would be D
4 0
3 years ago
discuss the different phases of the cell cycle. At which part of the cell cycle would you expect that a change in regulation cou
scZoUnD [109]
Cell division involves two processes mitosis and meiosis. Both of these processes are involved to help the cell divide and result to two diploid  daughter cells and for meiosis four haploid daughter cells. 

<span>A normal, typical and functional cell undergoes cell cycle in normal fashion and eventually reaches apoptosis. Yet cancer cells fail to display just some of these characteristics.

</span><span>The cycle cycle; mitosis occurs more in your body since it changes, modifies and requires cell division at maximum rate in many useful situations with the stand to a particular system and organ. Mitosis and meiosis are simply cell division processes that occurs differently, they're characteristically divergent from each other according to their function and structure. Mitosis is the cell division that happens in all cells in the human body except sperm and egg cells. They produce diploid cells.</span>
3 0
3 years ago
when a planarian(a type of worm) is cut in half each half usually grows back into a complete worm over time.) this situation mos
timama [110]

I think that that the answer should be C asexual reproduction of a single-celled organism

5 0
3 years ago
Read 2 more answers
Other questions:
  • Please help...
    9·1 answer
  • Ample amounts of carbohydrates are almost always found in ____.​
    5·1 answer
  • We want to study how pH affects the growth of
    6·1 answer
  • A student claims that if the animal producing the spermatozoa has a mutation in a mitochondrial gene, the probability that any o
    8·1 answer
  • Which two kingdoms include both one-celled and many-celled organisms?
    15·1 answer
  • What state of matter are icicles .
    12·2 answers
  • What is a major benefit of schooling
    6·2 answers
  • Which of the following is a type of asexual reproduction?
    14·1 answer
  • 6. In the gene pair Tt, the symbol T represent
    11·1 answer
  • In beans, the black color of the seeds (A) dominates over the white (a). When two bean plants were crossed with black seeds, pla
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!