Detail how the dorsal: ventral axis is established in amphibia, from the
importance of the sperm entry point to the gene regulation in the dorsal area of the entryo

Answers

Answer 1

Answer:

Explanation: Amphibian axis formation is an example of regulative development. The most important clue came from the fate map of this area of the egg, for it. Therefore, the specification of the dorsal-ventral axis begins at the moment of sperm entry.  The Siamois protein is critical for the expression of organizer-specific genes


Related Questions

Which of the following forms does chromatin condense to when a cell is preparing to divide?
A. Chromosome
B. Ribosome
C. Centrioles
D. Histone

Answers

The answer is A because in the process of mitosis and meiosis chromosomes are single-stranded groups that are condensed to chromatin when the process of division of cells chromosomes replicate to make sure that the new daughter cells received the correct number of chromosomes

Who spoke yo Samuel on The 4 occasion he was awoke

Answers

Answer:

God

Explanation:

1. Went to Samuel

2. Samuel

3. Samuel told him to say( here I am lord speak to me

4. God

WILL GIVE BRAINLISTTT!!! After learning about the conditions under which extremophiles live, do you think it is reasonable to argue that life could probably exist on other planets? Explain.

Answers

Answer:

Yes, as extremophiles are able to live in extreme conditions, like the extreme conditions that many other planets have.

a deletion mutation occurs when what happens?
A. A nucleotide is removed from the DNA strand
B. An entire strand of DNA is added

Answers

Answer:

A)  A nucleotide is removed from the DNA strand.

Explanation:

When you remove something, you are deleting it.

Why is bioinformatics important in genetic research?

Answers

Answer: Hope This Helps!

Explanation:

Apart from analysis of genome sequence data, bioinformatics is now being used for a vast array of other important tasks, including analysis of gene variation and expression, analysis and prediction of gene and protein structure and function, prediction and detection of gene regulation networks, simulation environments

(f)
What is the scientific term used for the child's eye colour?
Tick one box.
Chromosome
Condition
Genotype
Phenotype​

Answers

Answer:

the answer is chromosomes

The correct answer is A. Chromosome

Which of the following placements for citrus crops will be most likely to avoid frost damage?
A: North-facing high foothill
B: North-facing valley bottom
C: South-facing high foothill
D: South-facing hilltop

Answers

Answer:

D, south-facing hilltop

Explanation:

✎﹏☾✦Describe the process of Binary fission in amoeba.​

Answers

Answer:

Binary Fission

The type of asexual reproduction, in which the parent cell divides itself into two identical daughter cells by amitosis. The division of nucleus is called amitosis due to fact that the stages of a typical mitotic division are not observed in these cells. After division, the two daughter cells grow into adult ceils, e.g. Amoeba.

Binary Fission in Amoeba Amoeba reproduces by binary fission method where division of the parent cell and its components occur by stretching. The nucleus of parent cell grows and divides into two daughter nuclei (karyokinesis) by amitosis. Division of nucleus is followed by cytoplasmic division (cytokinesis). At the end of the process, two identical daughter cells are formed and identity of the parent organism is lost.

In which of the following cells are endoplasmic reticulum found? A.eukaryotic cells B.prokaryotic cells C.animal cells D. Plant cells

Answers

Answer:

eykaryotics cells

Explanation:

A. Eukaryotic cells is the correct answer

Select the correct answer from each drop-down menu.
In a forest, gazelles were the main source of food for cheetahs. The gazelles depended on grasses and shrubs for their food. A mysterious disease quickly spread among the cheetahs, killing many of them. What impact would the decline of the cheetah population have on resource availability?
Because the number of cheetahs declined, the population of gazelles will most likely . This situation, in turn, will lead to increased between the gazelles and other herbivorous animals that eat the same food as gazelles.

Answers

Answer:

due to natural selection , if the predator of the gazelle declines, then the prey the gazelles will increase since there isn't many cheetahs killing them anymore.

the second should be competition, since there will be more gazelles needing to eat.

Explanation:

How did Rutherford's work help form the present-day model of the atom?​

Answers

Answer:

I think the atomic model of Rutherford was a step in the historical development of the today concept of an atom.

Explanation:

Anything will help <333

Answers

It should be all of the above

Similarities in body structures between various organisms. When they find these similarities they conclude that these organisms have a common

A. Record

B. Stasis

C. Ancestry

D. Gradualism

Answers

Answer:

C

Explanation:

similarity in body structure is due to similar genetics

1. Give an example of a behavior you observed in another person. When you looked at
their behavior, did you decide their action was more a result of circumstances, or their
personality? What information did you use to make your judgment? (6 points)

(its psychology btw)

Answers

Answer and Explanation:

The person to whom I observed a behavior that will be exposed in this response was a character from a show called "Reply 1988." This character showed a highly explosive behavior and was very nervous and stressed. I believe that this behavior is a result of the circumstances that this character was experiencing at the time, as he was under a state of great tension and stress, as he believed that his son had suffered a plane crash. In addition, this character has always shown a very calm and peaceful personality throughout his life, which shows that the explosive behavior was caused by the circumstances. To make this judgment I used the way the character behaves in his daily life and his interactions with other characters.

2. Suppose you mate a black rooster with a
white hen. The feathers of all the offspring
are black. Explain the inheritance pattern in
these chickens. Draw all possible Punnett
Squares.

Answers

Answer:

Black feathers in an autosomal dominant trait

White feathers in an autosomal recessive trait

Punnet squares are in the image

The ____ is the source of all energy in our atmosphere.

Answers

Answer:

The sun

Explanation:

Answer:

The Sun is the source of all energy in our atmosphere.

Explanation:

The Sun is Earth's primary source of energy.

Our heat, light, energy, oxygen cycle, rain cycle, all of our food comes from the Sun.

All of the energy that Earth receives from the Sun is used in photosynthesis. In the atmosphere water vapor condenses to form clouds.

Active transport differs from passive transport in that energy in the form of ____ is used to move molecules across the membrane

Answers

Answer:

ATP

Explanation:

ATP is the type of energy needed for active transport to take place.

How do tonsils protect the body?
by secreting hormones
by producing red blood cells
by excreting toxins
by trapping harmful substances
Hurry

Answers

by trapping harmful substances I believe :)

Two forces are applied to the 45kg box as shown the box is smooth surface which statement best describes the acceleration of the box

Answers

Question: Two forces are applied to a 45 kg box, as shown. The box is on a smooth surface.Which statement best describes the acceleration of the box?  Assuming the diagram is similar to the one attached.

A) The box accelerates at 1.0 m/s² to the right because the net force is 45 N to the right.

B) The box accelerates at 1.9 m/s² to the right because the greater force is to the right.

C) The box accelerates at 3.0 m/s² because the combined forces cause the box to accelerate.

D) The box does not accelerate, because neither force is large enough to move the box.

Answer:

A) The box accelerates at 1.0 m/s² to the right because the net force is 45 N to the right.

Explanation:

From the diagram attached,

F₂-F₁ = ma.................. Equation 1

Where F₂ = Force acting to the rigth, F₁ = Force acting to the left, m = mass of the box, a = acceleration of the box.

Make a the subject of the equation

a = (F₂-F₁)/m............... Equation 2

also from the diagram

Given: F₂ = 55 N, F₁ = 10 N, m = 45 kg.

Substitute these values into equation 2

a = (55-10)/45

a = 45/45

a = 1 m/s²

Hence the box accelerate at 1.0 m/s² to the right because the net force is 45 N to the right. Hence the right option is A.

For a species to be on the endangered list there must be ____ organisms of the species left.
2,000
2,500
1,000
3,000

Answers

2,500 is correct in my opinion

Answer:

2,500 i belive

Explanation:

Which of these is not a criteria pollutant?
a)
carbon monoxide
b)
carbon dioxide
c)
ozone
d)
particulates
e)
sulfur dioxide

Answers

Answer:

CO2

Explanation:

as plants inhales carbon dioxide

How do photosynthesis and respiration work together to produce energy to support
life? How are the processes similar? How do the processes complement each other?

Answers

Photosynthesis and respiration work together by creating the energy and transporting it.

The process are similar because they both take something in, and let something else out.

The processes complement eachother by Respiration being able to take oxygen to the leaves, and the leaves using that oxygen to power their chemical reaction.

Good luck there friend!

Select the correct answer from each drop-down menu
When a cat drops from a tree to the ground, the conversion of
up behind
mouse to obtain its food. After eating its prey, the conversion of
Inside the cat's body.
takes place. Then cat runs
takes place inside the cat's body

Answers

Answer:

1. gravitational potential energy to kinetic energy

2. chemical energy to mechanical energy

Explanation:

i just took the test and got 100%

Gravitational force, potential energy to kinetic energy, and then conversion of chemical energy to mechanical energy take place in this order.

What do you mean by Prey?

Prey may be defined as an animal that is hunted or killed by another animal for food.

When a cat drops from a tree to the ground follows the gravitational force, while the conversion of up behind a mouse to obtain its food is the process of converting potential energy to kinetic energy. And at last, after eating its prey, the conversion inside the cat's body takes place the chemical energy to mechanical energy.

Therefore, Gravitational force, potential energy to kinetic energy, and then conversion of chemical energy to mechanical energy take place in this order.

To learn more about Energy conversion, refer to the link;

https://brainly.com/question/961052

2. Plankton are major producers in marine ecosystems. Only a small proportion of the energy
harvested by plankton is passed to the primary consumers. Which process in phytoplankton results
in the largest loss of energy that could otherwise be utilized by consumers?
A Movement
B. Homeostasis
C. Excretion
D. Respiration

Answers

Answer:

I think it is letter C

Explanation:

Correct me if I am wrong

The correct answer is option D. respiration as producers and other organisms of each trophic level most of their energy lose by metabolic reactions such as cellular respiration.

Energy decreases as it moves up trophic levels because energy is lost as metabolic heat as energy flow from one organism to another trophic level are consumed by organisms from the next level.

only 10% of energy transfers to the next trophic level.Regulation of homeostasis of the organisms is also one of the ways an organism loses their energyExcretion or feces is also one of the ways organism lose their energy

Most of their energy lose by metabolic reactions such as cellular respiration.

Learn more about energy flow:

https://brainly.com/question/20839694

An example of an environmental trait is the coloring of flamingos. In the wild they eat shrimp cause if a reddish color true or false

Answers

Answer:

False

Explanation:

It's true that eating shrimp causes them to get pink, but that's an acquired trait, not an environmental trait.

An example of an environmental trait would be the changing of an animal's fur color by season

Identify the error in apostrophe use in the sentence. Some of Dickens' books are in the childrens' section, and some are in the adults' section.

A. Dickens'
B. childrens'
C. adults'
D. none of the above​

Answers

Answer:

D

Explanation:

The increase of burning of fossil fuel can cauall of the following EXECPT....
Ozone layer depletion
Air pollution
Acid rain
Loss of biodiversity

Answers

Answer:

Acid rain as burning is fossil fuel doesn't lead to acid rain.

Which of the following is the term for a plastic unit containing four or six seedlings?
A. tray pack
B. cell pack
C. flat
D. plug

*its B*

Answers

ANSWER:

B


Step by step explanation:

Answer: B) Cell Pack

Explanation: Edge!

Qué significa biocatalizador

Answers

Answer:

a natural health food product prepared by yeast fermentation of medicinal plants,

Explanation:

Which of these answer choices best describes the overall effects that would occur in an animal that consumes this plant?

Answers

Answer:

The majority of ATP will not form.

Explanation:

The poison leaf plant, also known as gifblaar contains fluoroacetic acid, a compound that shut down the Krebs cycle that leads to less production of ATP because Krebs cycle drives the formation of electron carriers. These electron carriers are very important because these electron carriers carry the energy that is used to create a large number of ATP molecules in the final steps of aerobic respiration so we can conclude that majority of ATP will not form due to poison.

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In your essay, be sure to: examine and assess the perspectives givendeclare and explain your own perspective on the issue discuss the relationship between your perspective and those givenYour perspective may be in full or partial agreement, or in total disagreement, with any of the others.Whatever the case, support your ideas with logical reasoning and detailed, persuasive examples.Housing CostsAs the global population increases, the subject of affordable housing becomes an ever-greater concern formany, Governments have taken a variety of approaches to tackling this issue, which have met with equallyvarious levels of success when it comes to ensuring access to reasonably priced homes. Some havehousing specifically for lower-income individuals, while others have chosen to implement voucher systems orimpose rent controls. Given the growing population around the world - all of whom need housing - it isworthwhile to explore the implications of housing costs and what, if any, approach should be taken to makeaffordable options available for everyone.Read and carefully consider these perspectives. Each suggests a particular way of thinking about housing costs andtheir affordabilityPerspective One: A lack of affordable housing is almost always directly related to stagnating wages. While thecost of living increases year after year, earnings do not keep up. As a result, the best way to make housing moreaffordable is to find ways to increase pay.Perspective Two: Finding ways to build smaller, more efficient, and more economical houses and apartmentscan manage housing costs. Using innovation to drive down the costs of building and maintaining dwellings willmake it easier for people to find and secure affordable living situations.Perspective Three: Housing costs are simply a product of a functioning free market. 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