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
Vinvika [58]
2 years ago
15

In a wild-type strain of Drosophilathe size of a gene from the start to stop codon is calculated to be 2000 nucleotide pairs. Ho

wever, the size of the mRNA molecule transcribed from this gene is estimated at 1200 nucleotides. The most likely explanation for this discrepancy in size would invoke the existence of:
A)A new stop codon introduced by mutation
B)A frameshift mutation
C)mRNA degradation
D)DNA degradation
E)The presence of one or more introns
Biology
1 answer:
Kruka [31]2 years ago
7 0

Answer:

The correct answer is option E) "The presence of one or more introns".

Explanation:

Introns are non coding sequences located within genetic sequences that are removed during RNA maturation by a process known as RNA splicing. A gene that has 2000 nucleotide pairs but is translated into a mRNA molecule with 1200 nucleotides most likely have one or more introns that in conjunction are of 800 nucleotides in size. Once the intros are removed from the mRNA molecule the coding sequence is ready to be translated into a protein.

You might be interested in
Which of the following is an organic molecule?
Tpy6a [65]

Glucose is an organic molecule.

So the correct answer is B.

Hope this helps,

Davinia.

3 0
2 years ago
Read 2 more answers
20 points each and brainliest!! I NEED HELP!
8_murik_8 [283]

YOU HAVE TWO LOOK AT BOTH

5 0
3 years ago
HELP ME FAST PLEASE!!!!
SVETLANKA909090 [29]
Think it’s answer D but it maybe B
hope this helps!!
sorry if it’s wrong
6 0
2 years ago
Name and describe each star phase.
Inessa [10]
(A nebula)
is a cloud of gas (hydrogen) and dust in space. Nebulae are the birthplace biths. There are different types of nebula. An Emission Nebubla such as Orion nebula, glows brightly because the gas in it is energised by the stars that have already formed within it. 

(A star)
is a luminous globe of gas producing its own heat and light by nuclear reactions (nuclear fusion). They are born from nebulae and consist mostly of hydrogen and helium gas. 

(red giant)
This is a large bright star with a cool surface. It is formed during the later stages of the evolution of a star like the Sun, as it runs
out of hydrogen fuel at its centre.

(red dwarf)
These are very cool, faint and small stars, approximately one tenth the mass and diameter of the Sun. They burn very slowly and have estimated lifetimes of 100 billion years. 

(white dwarf)
This is very small, hot star, the last stage in the life cycle of a star like the Sun. White dwarfs have a mass similar to that of the Sun, but only 1% of the Sun's diameter; approximately the diameter of the Earth. 

(Black holes)
are believed to form from massive stars at the end of their life times. The gravitational pull in a black hole is so great that nothing can escape from it, not even light. The density of matter in a black hole cannot be measured.
8 0
2 years ago
A ___________ chain is a sequence of amino acids that is the foundation for the basic structure of a protein.
navik [9.2K]
A Polypeptide chain is a sequence of amino acids that is the foundation for the basic structure of a protein
6 0
3 years ago
Read 2 more answers
Other questions:
  • Peter Grant - the evolutionary biologist who has studied finches on Daphne Major (an island in the Galapagos) for several decade
    8·1 answer
  • What describes the activities of a cell that include cellular growth and cell division?
    6·1 answer
  • Which lipid acts as a chemical messenger? adipose tissue cholesterol testosterone beeswax
    7·2 answers
  • Behavioral vs Physicological
    9·1 answer
  • An example of a density dependent limiting factor is...
    7·1 answer
  • Which of the following is a correct statement about the event of the cell cycle​
    6·2 answers
  • 1. The bronchi and alveoli organs are part of which organ system?
    15·1 answer
  • Lizard is a poikilothermic animal give reason please​
    6·2 answers
  • Describe the location of his wounds indicated on figure 1.20
    9·1 answer
  • Name the tiny free floating organisms that live in both fresh water and salt water
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!