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
Ivahew [28]
3 years ago
7

When is gene expression blocked in the lac operon system?

Biology
2 answers:
PilotLPTM [1.2K]3 years ago
8 0
The repressor protein blocks the genes from making mRNA.
elena-s [515]3 years ago
4 0

The depressor protein blocks the genes from making mRNA.

Absolutely sure!

You might be interested in
Which area of the respiratory system is vascularized with the richest capillary network in the body?​
elena-14-01-66 [18.8K]

Answer:

There are from 200-500 million alveoli (mean diameter = 200 micrometers) in adult human lungs

Explanation:

The epithelial cells of the alveolar septum are markedly thinned and the capillary network immediately beneath the epithelium is the richest in the body.hope this helps you :)

3 0
3 years ago
Read 2 more answers
Which of the following processes takes place during prophase?
makkiz [27]

Answer:

It would be D. Mitotic spindles form

4 0
2 years ago
Another form of extracellular fluid is that located in
igor_vitrenko [27]
The second type of body fluid, the extracellular fluid, have two types: the interstitial fluid and the intravascular fluid. The interstitial fluid serves as a messenger for transferring materials to and from cells. While the intravascular fluid is responsible for being within the circulatory systems of the body, being am addition of 4% of the body's weight.
5 0
3 years ago
Interestingly, even though hemophilia in the royal families began in England, they were actually the only one of these four fami
Alex Ar [27]

Answer:

<h2>Alice's daughter Alix =X X*   </h2><h2>George V= XY </h2><h2>Progeny  are;</h2><h2>XX, XY, X*X, X*Y </h2><h2>50 % males would be  infected </h2><h2>50% male normal</h2><h2>50% female normal, </h2><h2>50 female carrier. </h2>

Explanation:

Hemophilia is an inherited disease and it follows  an X-linked recessive pattern. The genes for hemophilia disease are located on the X chromosome. In males one mutated copy of the chromosome X  is sufficient to cause the condition, because male contain only one gene. Female  contain XX chromosome, so both the chromosome must have mutated for causing this disease.

According to  study of  Queen Victoria (1891-1901) of England, Alice's daughter Alix was X linked carrier and George V was normal male,

so if they got married, their children would be  

parents genotype  X X*   XY

progeny  

XX, XY, X*X, X*Y

50% males would be  infected

50% male normal

50% female normal,

50 female carrier.

6 0
3 years ago
What classifies genetic mutation
lawyer [7]
I think it's nucleic acid.
7 0
3 years ago
Other questions:
  • Compare the amount of hyaline cartilage found in an embryonic skeleton compared to a child
    8·1 answer
  • Should we not assume that just as the eye, hand, the foot, and in general each part of the body clearly has its own proper funct
    6·1 answer
  • Where does carbon dioxide fiction occur In plant cell
    8·2 answers
  • Is gender an inherited or acquired trait?
    9·1 answer
  • Why does maltose have both alpha and beta anomers?
    7·2 answers
  • Liquids that evaporate quickly are called what?
    14·1 answer
  • What impact does deforestation have on the carbon cycle?
    5·1 answer
  • What animals that grow naturally in the Pacific Northwest and Kitsap Peninsula ? please help
    14·1 answer
  • Why did the otter population increase so quickly at first?​
    8·1 answer
  • Help me woth these two ill give free BRAINLESS ​
    12·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!