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
Naddika [18.5K]
3 years ago
8

The region of a Drosophila embryo with a low concentration of bicoid protein will develop into the _____. a) abdomenb) male flow

ersc) thoraxd) heade) female flowers
Biology
1 answer:
joja [24]3 years ago
6 0

Answer:

The correct option is d) head.

Explanation:

Bicoid protein works as a transcription factor. It enters the nuclei of the embryos in early segmentation, where it activates the hunchback gene. In Drosophila, embryonic development begins at the time of fertilization. The sperm enters the mature oocyte through the micropile, a structure located in what will be the anterior region of the egg. Bicoid and hunchback mRNAs, protein products are critical for the formation of the head and thorax. Already in the early stages of oocyte development, certain mRNAs are located in specific regions of the oocyte: mRNA molecules encoding the Bicoid protein are preferentially located in the anterior region of the oocyte. Moderate levels of the bicoid protein are necessary to activate the formation of the thorax (i.e., the expression of the hunchback gene) but the formation of the head requires high concentrations of Bicoid, the promoters of a specific gap gene of the head must have sites of low affinity binding for Bicoid, so that this gene can be activated only in extremely high concentrations of Bicoid.

The lack of Bicoid protein affects the formation of the head and other structures in the anterior region of the oocyte.

You might be interested in
Which of the following describes the role that enzymes play in the process of metabolism?
dedylja [7]

Answer:

D

Explanation:

Enzymes are chemical catalysts they speed up/ increase the rate of the reaction by lowering the activation energy (minimum energy required for reaction to actually occur).

4 0
3 years ago
The bald eagle almost went extinct when humans began using a pesticide called DDT. What can you conclude from the fact that bald
pashok25 [27]

Answer:

. Humans re-shape their environment, putting pressure on other species.

Explanation:

3 0
3 years ago
5. Major function of the male reproductive system
Vitek1552 [10]
6. A
7. A
8. ?
9. A
10. A

i know A being the answer for all is kind of weird but i am pretty sure that’s what the answers are
6 0
3 years ago
A client has been prescribed librax (chlordiazepoxide + clidinium), an anticholinergic benzodiazepine for irritable bowel syndro
spin [16.1K]
Librax is a medicine which is composed by:
- Chlordiazepoxide: it's a benzodiazepine. All benzodiazepine should never be taken with other drugs because it will major its effects. a person with <span>a history of substance abuse should not take Librax.
- Clidinium: It's a drug with anticholinergic effects, they are known for being avoided in persons with prostate hyperplasia because it will cause </span>urinary retention<span> and glaucoma due to its mydriasis effect.</span>
8 0
3 years ago
This green pigment found in plants traps energy from the sun for photosynthesis. chlorophyll chloroplast plastid peroxisome
WARRIOR [948]

Answer;

Chlorophyll

Chlorophyll is the green pigment found in plants traps energy from the sun for photosynthesis.

Explanation;

-Green plants requires food for their day to day activities, thus they use the process of photosynthesis to make their own food, which they use to generate energy or store for the future use in form of starch.

-Chlorophyll a pigment that gives plants their green color is vital during the process of photosynthesis. During the first phase of photosynthesis light dependent stage), chlorophyll traps sunlight which is used to split up water molecules to oxygen atoms and hydrogen ions, a process called photolysis.

6 0
3 years ago
Read 2 more answers
Other questions:
  • Why do microbiologists need to isolate bacterial colonies from a specimen? quzilet?
    15·2 answers
  • Which portions of the respiratory system are shared with the digestive system?
    7·1 answer
  • What is a meristematic cell?
    11·1 answer
  • Which of the following is not evidence supporting the tectonic plate theory?
    11·1 answer
  • Biology help please im pretty sire its a but im not 100%
    8·2 answers
  • Help me pleaseeeee... I can’t choose
    7·2 answers
  • L 1.2.4 Quiz: Severe Weather
    6·2 answers
  • Why does DMD affect mostly boys? Describe the type of inheritance pattern that DMD follows
    13·1 answer
  • Which invention allowed scientists to discover cells?
    9·1 answer
  • Which of the following words or phrases acts as a signal for chronological sequence?
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!