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
Mariulka [41]
3 years ago
15

When the bases are present in their rare imino or enol states, they can form which of the folowing pair combination?

Biology
1 answer:
Digiron [165]3 years ago
6 0

Answer:

The correct answer is c.  A:C

Explanation:

Thymine and guanine are most stable in their keto form and adenine and cytosine are most stable in their amino form. Sometimes these bases undergo tautomeric shift(proton shift) which converts them into rare less stable form called tautomeric form which are imino and enol form.

In this rare form, these bases can pair with the base which are not complementary to them. Like adenine base pairs with cytosine and guanine base pairs with thymine when present in rare form.

When these tautomeric forms of nucleotides incorporated in DNA they may cause mutation in the DNA.

Therefore the correct answer is c.  A:C .

You might be interested in
Help asap true or false Uranus orbits the Sun at less than 40% of the speed of Venus.
wlad13 [49]

Answer:

True

Explanation:

The attached image shows a table that displays the eight (8) planets, their respective average distance from the sun and their respective orbital speeds.

The question only relates the orbital speed of planets Uranus and Venus, which is 7km/s and 35km/s respectively.

40% of the orbital speed of planet Venus is:

= 40/100 × 35

= 0.4 × 35

= 14

According to the table in the image, Uranus orbits around the sun at a speed of 7km/s, which is lesser than 40% of Venus's orbital speed (14km/s).

Therefore, it is TRUE that Uranus orbits the sun at less than 40% of the orbital speed of Venus.

7 0
3 years ago
_______ can produce their own energy.
STALIN [3.7K]
A) Autotrophs because heterotrophs don't make their own food and rely on other organisms while autotrophs are organisms such as plants who use photosynthesis to make their own food.
8 0
4 years ago
A farmer notices that the corn in her fields is growing slowly, so she adds twice the normal amount of fertilizer to each field.
IRISSAK [1]
Lawn and farming fertilizer is harmful to the enviroment due to the abundance of chemicals. When it rain or seeped underground, the fertilizer leaked into the nearby lake and thus, all the fish died to the chemicals in the fertilizer. 
3 0
4 years ago
Mid-ocean ridges are segmented and contain which two basic types of plate boundaries linked together?
mamaluj [8]
Mid ocean ridges occur where two tectonic plates diverge or move away from each other. This separation occurs under the ocean.The Mid-Atlantic Ridge is such an example and is where the North and South American plates pull away from the Eurasian and African plates. Mid ocean ridges are usually a combination of divergent and transform plate boundaries. At transform boundaries plates slide past each other in opposite directions. 
7 0
4 years ago
please help :) In an experimental investigation, the variable that the researcher changes or manipulates in order to see its eff
erma4kov [3.2K]

Answer: Independent variable

6 0
4 years ago
Other questions:
  • Does photosynthesis require oxygen
    13·2 answers
  • With certain diseases, even a single case is treated as an epidemic. <br> a. True <br> b. False
    6·2 answers
  • Which condition is a population that descended from a small number of common ancestors more likely to have?
    9·1 answer
  • How would you increase oxygen levels during photosynthesis
    14·2 answers
  • Primary succession takes much longer than secondary succession because it involves _________
    11·2 answers
  • Show the location of different parts of the urinary system in man
    6·1 answer
  • Ở người, alen A nằm trên NST X quy định máu đông bình thường là trội hoàn toàn so với alen a quy định mù màu. Một cặp vợ chồng s
    15·1 answer
  • Which of the following best describes a limiting factor of renewable energy?
    15·1 answer
  • This is urgent ill give you brainliest and 25 ponts but helppp
    8·1 answer
  • Taryn is thinking about a belief-laden statement, and Myra is thinking about a belief-neutral statement. Taryn's _____ is activa
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!