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
lara [203]
3 years ago
13

Christiane Nüsslein-Volhard and her colleagues carried out several experiments in an attempt to understand what determines the a

nterior and posterior ends of a Drosophila larva (reviewed in C. NüssleinVolhard, H. G. Frohnhofer, and R. Lehmann. 1987. Science 238:1675– 1681). They isolated fruit flies with mutations in the bicoid gene (bcd−). These flies produced embryos that lacked a head and thorax. When they transplanted cytoplasm from the anterior end of an egg from a wild-type female into the anterior end of an egg from a mutant bicoid female, normal head and thorax development took place in the embryo. However, transplanting cytoplasm from the posterior end of an egg from a wild-type female into the anterior end of an egg from a bicoid female had no effect. Explain these results in regard to what you know about proteins that control the determination of the anterior–posterior axis.
Biology
1 answer:
Dmitry [639]3 years ago
6 0

Answer:

Explanation:

Bicoid gene is the maternal effect gene whose protein concentration gradient patters the anterior-posterior axis in Drosophila embryogenesis. It was the primary protein that is demonstrated to act as a morphogen. Morphogens are proteins whose concentration gradient will affect the developmental fate of the surrounding region.

The specified bicoid gene is the one which codes for bicoid protein. This protein is being existing in a gradient manner in the egg and thus its concentration is higher at the anterior end and lower in posterior end.

This bicoid protein is responsible for the stimulation of the development of the anterior end.

The posterior region (including the hindgut) expands and extends towards the anterior pole along the dorsal side of the embryo. At this time, segments of the embryo become visible, creating a striped arrangement along the anterior-posterior axis.

You might be interested in
5) Order and define these terms from smallest to biggest: Chromosome, Cell, DNA (The individual bases), Nuclei, Gene​
noname [10]

Answer:

Cell > Nucleus > Chromosome > Gene > DNA

Explanation:

4 0
2 years ago
Explain what happens to the molecules as the water gets hot.
dezoksy [38]
When water is heated, it evaporates. The molecules move and vibrate so quickly that they escape into the atmosphere as molecules of water vapor.
6 0
3 years ago
Read 2 more answers
What do you think would happen if there was more glucose (sugar) than available NAD+? Explain.
EleoNora [17]

Answer:

n people who have developed diabetes, glucose builds up in the blood, resulting in hyperglycemia. ... And, too much sugar in the bloodstream can cause other types of damage to body tissues, which can increase the risk of heart disease and stroke, kidney disease, vision problems, and nerve problems in people with diabetes.

Explanation:

8 0
3 years ago
Find the total number of<br> atoms in each molecule.<br> Na3PO4
Lunna [17]

Answer:

8

Explanation:

There are 3 sodium atoms, 1 phosphorus atom, & 4 oxygen atoms.

3+1+4=8 atoms in total

6 0
3 years ago
Which of the following distinguishes why large corporate farms are losing favor with the public? pleas help me out!
polet [3.4K]
The public is upset with the farms’ unnatural farming practices.
7 0
4 years ago
Read 2 more answers
Other questions:
  • Proteins that resemble spools on which dna molecules are wound are called
    12·1 answer
  • What do cells have a plasma membrane please!
    14·1 answer
  • Which process will decrease the level of CO2 in the atmosphere?
    14·1 answer
  • Lucas is able to discuss the pretty colors that appear on the picture placed in front of him even though he is not consciously a
    5·1 answer
  • Which of the following cells shows the presence of a nucleus? A.)Prokaryotic cell B.)Eukaryotic cell C.)Both prokaryotic and euk
    9·2 answers
  • Disease-causing organisms that are so small they can only be seen through a microscope ?
    6·1 answer
  • Explain the difference between haploid and diploid cells
    8·1 answer
  • Which of the following events happens during Transcription?
    6·1 answer
  • Sickle Cell anemia is a recessive trait that causes blood cells to be misshaped. A woman who has no history of sickle cell anemi
    9·1 answer
  • Coat color in rabbits is represented by a gene (C). The different phenotypes are dominant in this order: Agouti &gt; chinchilla
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!