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
mojhsa [17]
3 years ago
13

The figure above depicts the DNA-protein complex that is assembled at the transcriptional start site of gene X when the expressi

on of gene X is activated in liver cells. Previous studies have shown th gene X is never expressed in nerve cells. Based on the diagram, which of the following most likely contributes to the specific expression pattern of gene X?
A.Expression of gene X produces large amounts of tRNA but undetectable amounts of mRNA.
B The general transcription factors inhibit the activation of gene X in liver cells by blocking the activator from binding to RNA polymerase II.
С The activator is a sequence-specific DNA-binding protein that is present in some tissues but not in other tissues.
D The enhancer is a unique DNA segment that is added to the nuclear DNA of some cells of an organism during the process of mitotic cell division but not other cells.​
Biology
1 answer:
WITCHER [35]3 years ago
6 0

Answer:

C

Explanation:

You might be interested in
Explain the process of cross-pollination.
Anna007 [38]

Cross pollination is the transfer of pollen of different species to stigma of different species of plants.

Cross pollination results in healthy, viable and diverse plants.

Mendel observed that traits could either be dominant or recessive.

Blended traits or incomplete dominance is the condition in which dominant allele could not produce its trait alone instead blending with recessive allele takes place giving new phenotype to progeny.

Explanation:

In cross pollination pollen transfer takes place from anthers to stigma. In Mendelian genetics the anthers of the plant was removed because it has both male and female parts on same plant so that self pollination does not take place.

The importance of cross pollination is that it creates diversity in the plant species since the traits having different alleles are combined to form the progeny plant. The offspring are healthier and high quality seeds are found.

Mendel observed that traits are either dominant or recessive in general.  It was observed that when homozygous parents were crossed, the progeny in F1 generation always had dominant trait. The recessive trait only appeared when F1 generation offspring were self pollinate.

Blended traits or incomplete dominance appear when alleles get blended and exhibit the traits in phenotype. The phenotype appeared will not be matching with either parents.

The example is a white coloured flower is crossed with red colour flower the resultant colour of the flower is pink. It shows that dominant allele red is not completely dominant and gets blended with white colour.

7 0
3 years ago
A college student has been assigned to write captions for a new textbook on gravity and motion. This is one of the pictures from
dedylja [7]

Answer:

C

Explanation:

7 0
3 years ago
What's the density of the lions in yhe portion of the park that has been studied?
kkurt [141]
A part of the destiny of lion was a part
6 0
3 years ago
What planet rotates from top to bottom?
sashaice [31]

Answer:

Uranus

Uranus' axis is tilted, so it rotates from top to bottom.

3 0
3 years ago
Read 2 more answers
Seed packets give a recommended planting depth for the enclosed seeds. The most likely reason some seeds are to be covered with
dusya [7]

Answer:

The most likely reason some seeds are to be covered with only 1/4 inch of soil is that <u>the seeds require light to germinate.</u>

Explanation:

This seed packets does not say anyhing about temperature so we can rule out higher temperature. It is really rare to plant with seeds does not have any cotyledons and also we can't really know it from the question. Etiolation response can also be found in seedlings also from this question we can't know this for sure.

Only thing that is changes if you cover the seeds with only 1/4 inch of soil is light. If you completely cover this seed with soil it wouldn't grow.

8 0
4 years ago
Other questions:
  • An invasive plant that can live in nutrient poor soil moves into an abandoned field. Later this land is cleared of this invasive
    6·1 answer
  • Which of the following is produced during glycolysis
    10·2 answers
  • Jordan wants to conduct an experiment to see if plant food makes a difference in how well plants grow. He gets 10 pots and plant
    5·2 answers
  • All matter is NOT composed of __________. protons neutrons sodium electrons
    8·2 answers
  • ANSWER IF YOU ARE 14 TO 17. AND ARE LOOKING FOR FRIENDS AND YOU ARE A BOY :) WHAT is Complimentary DNA
    8·1 answer
  • Many plant cells have more than two complete sets of chromosomes in each cell. Explain how this might occur.
    5·1 answer
  • What is smaller than a cell?
    9·1 answer
  • Which element has similar properties to aluminum​
    8·1 answer
  • The chemical requirements for microbial growth include carbon, nitrogen, phosphorus, and sulfur. Why do all cells need nitrogen?
    5·1 answer
  • How many cells are in each phase of the cycle? *picture* *need all 5 stages*
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!