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
Sophie [7]
3 years ago
14

Suppose that gene X is induced in E. coli cells when they are treated with high levels of ethanol. A mutation in region 1 in the

upstream region of gene X results in high-level expression under basal conditions, and a mutation in region 2 results in an uninducible gene. What would you expect from a strain in which both regions 1 and 2 are mutated?
Biology
1 answer:
tangare [24]3 years ago
6 0

Answer:

Because there is a mutation in region one that causes high level expression even in the absence of ethanol, region 1 must bind a transcriptional repressor and regulation of gene X must occur by relief of repression. Since a mutation in gene 2 results in a uninducibility of the gene, region 2 must bind a transcriptional activator. in the absenece of an activator the reprssor becomes irrelevant and the gene is in active regadless of conditions. Mutations in both regions 1 and 2 have the same effect as a single mutation in region 2, because in the absence of a bound transcriptional activator the repressor is irrelaevnat and the gene is inactive regardless of the presence or absence of ethanol

You might be interested in
The city of Austin has expanded so quickly that native bats have lost their natural cave habitats. They began to live in the nar
barxatty [35]
B An ecosystem because it is i dont know how to explain but i think is that one
3 0
2 years ago
The surface of the sea is not level due to ?
lora16 [44]

Answer:waves

Explanation:

5 0
3 years ago
Read 2 more answers
Choose all the answers that apply.
Ksju [112]

Answer:

stores extra food

is responsible for photosynthesis

supports the plant

makes up the majority of a plant

Explanation:

Ground tissues are one of the three types of plant tissues (others being dermal and vascular). They are composed of cells as follows: parenchyma, collenchyma, and sclerenchyma. These three cells that make up the ground tissues perform different functions in the plant cell.

- Parenchyma functions in photosynthesis and storage of extra food (carbohydrates) in the cell.

- Collenchyma functions in the support of young regions of the plant

- Sclerenchyma, which has the thickest cell wall, functions mainly in the strengthening/support of the plant cell.

Also, among the three tissue types in a plant, ground tissues make up majority of the plant cell.

4 0
2 years ago
Dolly was a female domestic sheep, and the first mammal to be cloned from an adult somatic cell, using the process of __________
weqwewe [10]
By using<span> the complete genetic material from a regular body </span>
4 0
2 years ago
Read 2 more answers
Fossils are found in _______.
Sergio [31]

Answer:

Sedimentary rocks

Explanation: Where are fossils found? Fossils are found almost exclusively in sedimentary rocks—rocks that form when sand, silt, mud, and organic material settle out of water or air to form layers that are then compacted into rock. So the answer will be <em>Sedimentary</em> rocks.

6 0
2 years ago
Read 2 more answers
Other questions:
  • What step has not yet been accomplished by scientists researching the origin of life on Earth?
    6·1 answer
  • True or false? t-cells get their name from the thyroid gland in which they are stored.
    14·1 answer
  • When the more dense crust dives into the asthenosphere, it continues to pull the rest of the crust with it. This is called _____
    9·1 answer
  • All living things contain organic compounds.<br><br> True<br><br> False
    12·1 answer
  • What are the tree types of symbiotic relationship
    9·2 answers
  • Fertile hyphae that bear spores are called _____. conidiophores sporangium gametophytes isogametes
    13·2 answers
  • Based on the current research progress, in the future, in which direction might liposomes break through in the field of food?
    13·1 answer
  • The kidneys themselves also serve as an endocrine gland. What hormones are produced by the kidney and what function do they serv
    5·2 answers
  • Natural selection increases the frequency of beneficial alleles in
    15·1 answer
  • What does the fact that the infant mortality rate is higher among minority groups in the United States than among the white popu
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!