The early stages of embryonic development begin with fertilization. The process of fertilization is tightly controlled to ensure that only one sperm fuses with one egg. After fertilization, the zygote undergoes cleavage to form the blastula.
The formation of a zygote after fertilization and undifferentiated cell are common features during the earliest stages of embryo development.
In vertebrates, fertilization is the process by which two geminal cells fuse to form a zygote, which will develop into an adult organism.The cells are all in an undifferentiated state during the earliest stages of embryonic development.After this process, the cells begin to differentiate to form a defined structure known as gastrula.In conclusion, the formation of a zygote after fertilization and undifferentiated cell are common features during the earliest stages of embryo development.
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How does anaphase II differ from anaphase I
Answer:
There's a difference.
Explanation:
Anaphase I involves the separating of chromosomes from the sister chromatids and it all occurs in a diploid cell.
Anaphase II involves the split of the sister chromatids into single chromatids and it all occurs in a haploid cell.
Charles Darwin referred to this as survival of the fittest. Over time, it results in changes in the inherited characteristics of a population. A. Natural Selection B. Evolution. C. Genetic Variation D. Extinction
Is rr genotype or phenotype
Answer:
Genotype
Explanation:
A plant with wrinkled seeds would have the following genotype: (rr).
Biotechnology helps decrease ______
by reducing amounts of chemicals absorbed from pesticides and herbicides
O shipping time
O taste
O spoilage
O pollution
Answer:
pollution I took the quiz
How does the DNA macromolecule help our cells?
Stores and ( ) information
Most cells in the human body contain two sex chromosomes. Which type
of cell does not have two sex chromosomes?
Liver cell
Muscle cell
Nerve cell
Red blood cell
Answer:
liver cell
Explanation:
The liver parenchyma is primarily comprised of hepatocytes. Hepatocytes are polygonal epithelial cells with abundant eosinophilic, granular cytoplasm and large, centrally located round nuclei. Hepatocyte nuclei often contain a prominent nucleolus. Binucleated hepatocytes (= containing two nuclei) are not uncommon.
"Immuno" refers to the immune system and deficiency means "a
lack of". What do you think immunodeficiency means and what might life be like for someone with
this problem?
Answer:
Given that, immunodeficiency could mean having a weak immune system. Which means the person would be prone to diseases. A person with immunodeficiency could be going through a hard time as they would have to make sure to stay healthy and be very health consious. They might also not go out to eat in restaurants due to the lack of cleanliness in the kitchens. If caught any disease they would have a hard time curing which could result to death at an unexpected age.
PLS HELP ASAP DUE SOON PLS AND THANK U ILYSM IF U DO HELP.
Answer:
1. Yes and No. Speaking from the POV in which penguins are better of packed together than spread out since they are all focused on a specific region which is the southern hemisphere at the south pole I don't think spreading them out even when having the same exact species would help them survive since they need one another, but speaking in a different POV where multiple species are put in every cold region then yes it may work and it may also benefit in science fields to help ease the search of species and studies of them as well as the habitat of penguins themselves.
2. Penguins share many adaptations because of the idea of them only living in a cold, freezing region. Like, they spent half their time in water and the other half on land. Added to that, all penguins swim very fast due to webbed legs which helps them in surviving in a 100% water environment since Ice is technically frozen water. And they share many more adaptations all because of the cold region habitat they all share.
( I didn't really understand the 3rd one but Ill give it my own opinion )
3. Different geographical locations as I mentioned in the first question also speaks of how penguins wouldn't really survive much without being with their own species or their own type of penguins if that makes sense, although they are predators sometimes the environment might not give them the needed resources like food, warmth, strong legs to swim. Some baby penguins might grow up weak which would lead to weak physical structure which decreases the rate of survival because of not eating well nor keeping a healthy penguin routine that they usually do on the populated area of penguins in the southern hemisphere. So, weak physical structure leads to penguins not having their capabilities of being the predator in the environment and swimming as fast as others. Different environments and geographical locations may have an effect on this depending on penguin species but that's all I know.
I hope this helped :) .
Explanation:
9. Why is the synthesis stage called this?
a. because protein synthesis is taking place
b. because DNA synthesis is taking place
c. because it combines several smaller stages into one
d. because the chromosomes come together
does anyone know this?
Answer:
No
Explanation:
How can deep density-driven currents affect Earth’s climate?
Answer:
The answer is down
Explanation:
The deep density ocean currents aslo have a strong effect on the Earth's climate the water in the North Atlantic Ocean the water is cold and salty this colder salt water sinks because of its greater density then it flows through Southward deep in the ocean
I think this answer may help you .
Please help! Just one question! :)
Answer:
semiconservative
Explanation:
Please help this will help me pass high school I just need this one answer please will like it
Answer:
B
Explanation:
Ozone is helpful in the upper atmosphere but harmful in the lower atmosphere where we can breathe it
( True or false)
Which of the following could result if meiosis did not occur in the process of sexual reproduction?
A. Chromosomes would not be copied exactly.
B. Chromosomes would no longer contain genetic information.
C. Chromosome number would decrease with each generation.
D. Chromosome number would increase with each generation.
Answer:
B
They wouldnt have abilizy to propagate themselfs
what does DNA need to replicate
In order to replicate, DNA needs the help of a lot of enzymes and primers (helicase, DNA polymerase, RNA primer, ligase, etc) It is also SUPER important that there is a template for the DNA to replicate off of so that the genetic info is passed on from one generation to the next without any changes or damage to the DNA
What is a biodigester?
Pls answer...
Answer:
A system that biologically digests organic material
A biodigester is a system which biologically digest organic materials..
State four (4) differences between a plant cell and an animal
7. Slime molds are fungus like protists, but they are not fungi. Why?
Answer:
Because they can move
Explanation:
Fungi cannot make food themselves so they depend heavily on hosts. Also fungi lack the proper cilia to move, so they use spores instead to "move".
In the case of slime mold, they are like an animal fungus per se. They are like Protozoa in their amoeboid plasmodial stage and similar to true fungi in spore formation.
Define the following terms. A Emulsification. B Peristalsis. C Absorption. D Assimilation
Answer:
A] Emulsification - emulsification is the process of breaking down fat into smaller droplets which makes it easy for digestion.
B] Peristalsis - waves of muscular contraction that pushes food along the gut.
C] Absorption - process in which substances are taken in.
D] Assimilation - the process of absorbing minerals and other chemicals from food, usually for growth and repair of cells.
Title: Does temperature have an effect on growth rate of crystals? what about leaving them covered or uncovered? Does dry air or moist air seem to grow more crystals
Hypothesis:
IF
THEN
BECAUSE
Help pls
Answer:
Temperature also affects the growth of crystals because "the higher the temperature, the warmer the crystal solution will be, and the faster its molecules will move. This movement allows them to evaporate more quickly, leaving particles behind to form into crystals.
Explanation:
A Warm and Light Atmosphere
Warm air temperature aids water evaporation, causing the crystals to grow more quickly. Crystals will still grow in cooler temperatures, but it will take much longer for the water to evaporate. Crystal growth also requires light.
where are earthquakes most likely to occur?
A: Where a seismograph is located
B: human populations are densest
C: Where rock is at lowest temperature underground
D: Where rock experiences the most pressure underground
remove dirts using hard cloth
Answer:
It can easily remove dirt.
Explanation:
When dirt is present on the hard surface such as car or machines so it can be cleaned by using hard cloth because the dirt attached tightly to the surface which can only be removed from that surface with the help of using hard cloth. Hard cloth has rough surface which easily remove the dirt from the surface as compared to the light cloth so that's why hard cloth is used to remove dirt from the surface.
WILL MARK BRAINLIEST!!!!!!!
Which choice names the two parts of Earth that make up the lithosphere?
crust and outer part of the mantle
mantle and outer core
inner core and mantle
inner core and outer core
Answer:
crust and outer part of the mantle
Explanation:
lithosphere includes brittle upper portion of the mantle and crust and the outer most layers of the earths structure and it is bound by the atmosphere above the asthenosphere
What best describes the difference between anaerobic and aerobic respiration?
o Only aerobic respiration breaks down carbon dioxide.
Only aerobic respiration uses oxygen as a reactant.
O Only aerobic respiration occurs in humans.
o Only anaerobic respiration produces CO2.
Answer:
Aerobic processes in cellular respiration can only occur if oxygen is present.
Explanation:
help please!!! it’s due in 2 hours!
Explanation:
1.) The action of admitting someone into a secret and obscure society or group, typically with a ritual.
2.) The action or process of lengthening something.
3.) The action of termination something or the fact of being terminating.
Why do some non-'ideal' traits exist in organisms?
Explanation:
They are helpful in mate selection rather than being mostly beneficial to survival
Which level of organization is formed from two or more different tissues that group together and perform a function? (4 points) Molecule Organ Organ system Tissue
Answer:
i think system is correct
Explanation:
for example heart is an organ. it has muscle tissue .epithelial tissue . connective tissue nervous tissue
Cameron is a doctor treating a cancer patient, Billy is an archeologist dating a vase, and Isabelle is a geologist dating a layer of soil. Which isotopes would each person most likely use?
Sorry mate your question is very confusing
Do it again what is the question about
Answer:
B
Explanation:
Examine the genotype for an individual who is AaBbCcDd. Predict the outcomes of meiosis and the potential gamete combinations
that could form from this individual. Select ALL that apply.
A)
50% of the gametes will be AaBbCcDd.
B)
1/16 of the gametes produced will be ABcd.
The individual could make gametes that contain ABCD.
D)
The individual could make gametes abcd half of the time.
E)
Only dominant traits will be present in the gametes from a heterozygous
individual
Answer: B,C
Explanation:
I did just did the USA test prep
The outcomes of meiosis and the potential gamete combinations that could form from the genotype for an individual who is AaBbCcDd:
B) 1/16 of the gametes produced will be ABcd. C) The individual could make gametes that contain ABCD.A gamete that is formed by the meiosis, is a reproductive cell which has haploid set of chromosomes arise from the genotype, the total number of chromosome in mature organism cells.
A a simple method to calculate the number of gametes:
Count the number of heterozygous alleles i.e Aa Bb Cc and Dd which means 4.n = 4
Then, total number of gametes will be = [tex]2^{n}[/tex] or [tex]2^{4}[/tex] = 16Thus 16 in this condition
The 16 types of gametes are formed by this individual by permutation and combination are:
ABCD, AbCD, ABcD, ABCd,
ABcd, AbcD, ABCd, Abcd,
aBCD, aBCd, aBcd, aBcD,
abCD, abCd, abcd, abcD.
Thus, the correct answer is -
B) 1/16 of the gametes produced will be ABcd. C) The individual could make gametes that contain ABCD.Learn more about permutation and combination:
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