Answer:
Oogenesis in the female is the process that produces fertile eggs, ready for fertilisation by the male sperm. Each egg has only one of each of the 23 human chromosomes - normal body cells have a pair of each, having 46 chromosomes in total.
To produce egg cells, the process of oogenesis takes place in the female ovary. Progenitor cells divide through a cell division process called meoisis, which is also known as a reduction division.
Instead of one cell splitting into two identical cells, four cells are produced which have half the normal number of chromosomes - they are described as being haploid.
The four cells are all genetically different because the process of meiosis involves cross overs of the chromosomes during division, so mixing up the genes inherited from the woman's mother and the woman's father. This variation produces fitter offspring as it widens the genetic variation that is possible.Explanation:
why are there no identical individuals among humans?
Answer: Numerous contrasts between people are without a doubt a direct result of contrasts in their qualities. ... People vary, obviously, on the grounds that natural cycles are intrinsically factor.
Explanation:
help please! (earth science/heat)
Answer:
4.
Explanation:
melting (changing from a solid to a liquid)
freezing (changing from a liquid to a solid)
evaporation (changing from a liquid to a gas)
and condensation (changing from a gas to a liquid).
All of the following are true of hospitals in the United States, except: _____________
a. the average length of stay has declined substantially in recent decades.
b. the percentage of hospital services provided to outpatients has increased substantially in recent decades.
c. hospitals are owned and operated as governmental or not-for-profit institutions, but they are not owned by for-profit corporations.
d. hospitals receive a greater percentage of the healthcare dollar than any other healthcare institution.
There are different kinds of Healthcare system. The true statement about hospitals in the United States is that Hospitals are owned and operated as governmental or not-for-profits institutions but they are not owned by for-profit corporations.
U.S. Healthcare coverage is known to be divided into 2 part. They are;
Public healthcare (government-funded) Private healthcare (privately-funded)Hospitals often offer basic care to the sick. They treat illness and do simple surgery. Their work includes removal of gallstones etc. The hospitals are not set up to make profit but too help people.
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PLS HELP! MULTIPLE CHOICE
Explanation:
HELPING CAN BE DONE WHEN THE QUESTION IS POSTED.
Where, in terms of an ellipse, is the Sun located with respect to the orbit of each planet? Which
one of Kepler's Laws does your answer support?
Answer:
focus
The Sun is at one focus. The planet follows the ellipse in its orbit, meaning that the planet to Sun distance is constantly changing as the planet goes around its orbit. Kepler's Second Law: the imaginary line joining a planet and the Sun sweeps equal areas of space during equal time intervals as the planet orbits.
Which solution would be MOST effective at reducing the emission of greenhouse gases?
A
reducing carbon dioxide production by increasing use of mass transportation
B
reducing production of fluorinated gases by changing industrial practices
C
reducing production of methane by changing agricultural practices
D
reducing nitrous oxide production by burning less solid waste
Reducing nitrous oxide production by burning less solid waste.
It is 300 time more potent than carbon dioxide. It is emitted from agriculture, land use, transportation, industry.What is green house effect?It is a process that occurs when energy from planet's sun goes though its atmosphere and warms the planet's surface, but atmosphere prevents the heat from returning directly to space, resulting in warmer planet.
What is atmosphere?
It is a layer of gases that envelope a planet, is held in place by the gravity of the planetary body.
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in the ecosystem energy budget, primary productivity is like _____.
Answer: Income
Explanation:
In the ecosystem energy budget, primary productivity is like income. This is because primary production is the way in which energy enters an ecosystem.
I hope this helps :}
In the ecosystem energy budget, primary productivity is like income. Therefore, the correct option is B.
What is primary productivity?Primary productivity is the rate at which organic matter is produced by photosynthesis in an ecosystem. It represents the energy that enters the ecosystem from the sun and is available for consumption by other organisms. Therefore, like income, primary productivity is a source of energy that is available to be “spent” by organisms in the ecosystem.
Option A, debt, is not an appropriate analogy for primary productivity, as it implies a negative balance. Option C, the interest rate, is also not an appropriate analogy, as it does not represent a source of energy but rather a factor that affects the rate of exchange of energy. Option D, spending, is a closer analogy, but it does not capture the fact that primary productivity is a source of energy, rather than an action that depletes energy. Therefore, the correct option is B.
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The question is incomplete, but most probably the complete question is,
In the ecosystem energy budget, primary productivity is like _____.
A). debt
B). income
C). the interest rate
D). spending
Describe ways in which HIV can be transmitted
Answer:
From mother to child.
Unprotected sexual intercourse.
Sharing of sharp objects.
Unscreened blood transfusion.
Contact with body fluid of an infected person
Antheridium is similar to Archegonium in all of the following except
The chromosomal set
Their site on the gametophyte is convergent
Number of the gametes produced by each one
Type of division in each one
Answer:
Explanation:
An archegonium (pl: archegonia), from the ancient Greek ἀρχή ("beginning") and γόνος ("offspring"), is a multicellular structure or organ of the gametophyte phase of certain plants, producing and containing the ovum or female gamete. The corresponding male organ is called the antheridium.
6. Blood type is determined by three alleles, A, B, and O. Use the
punnett square below to answer questions a through c.
a. What is the probability of an offspring with type A blood?
b. What is the probability of an offspring with type O blood?
c. What are the genotypes and phenotypes of the parents?
Pls help I need to turn this in 30 mins and have more work to do
Answer:
a. AO
b. OO
c. AO and BO
Explanation:
It is easier than solving solving matrices problems.
The organelles that break down lipids, carbohydrates, and proteins into
small molecules that can be used by the cell are called *
A. vacuoles
B. lysosomes
C. ribosomes
D. microfilaments
When a cell divides via asexual reproduction :________.
i. each daughter cell receives exactly half the genetic information in the parent cell.
ii. the genetic information is randomly parceled out to the daughter cells.
iii. each daughter cell receives a nearly perfect copy of the parent cell's genetic information.
iv. each daughter cell receives the same amount of genetic information that was in the parent cell, but it has been altered.
Answer:
three number each daughter ce receives nearly perfect copy of the parents cells genetic information
Which of the three types of RNA is
involved directly with the process of
transcription?
A. transfer RNA (TRNA)
B. ribosomal RNA (TRNA)
C. messenger RNA (mRNA)
A snail moves 1.1 cm/min how far could it travel in 48 min
Answer:
52.8 centimeters
Explanation:
1.1 times 48 minutes is 52.8
Answer:
52.8 cm
Explanation:
1.1 cm/min multiplied by 48 equals 52.8
Check
Which molecule is a high-energy output of the light reactions? (1 point)
A) АТР
B) hydrogen
C) oxygen
D) ADP
Answer:
A) ATP
Explanation:
what birds is a likely biological explanation for The
Mothman?
Answer:
owl is a like biological explanation for mothman......
`4\left(y-5\right)`=
Answer: This makes no sense. message me for more help though.
Explanation:
Please help if possible !!
Its B bbbbbbbbbbbbbbbbbbbbbbbbbbb
Which of the following statements best describes the G1 phase?
Group of answer choices
DNA replication
cellular division
growth and development
production of organelles and molecules
Please help !!!
Will give you the brainliest !!
Answer:
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1. Generally, production traits such as milk, fat, and protein yield are moderately heritable. While milk production traits are important, many other traits are of economic importance in dairy cattle breeding, including conformation, longevity, reproduction, health, and workability traits.
2. Would've surely practiced selective breeding via controlled mating... the three ways : Outcrossing , Line Breeding and Inbreeding can help in producing a herd of high yielding beef capital.
hope helpful~
!!!!NEED HELP ASAP ILL GIVE BRAINLIEST AND 25 POINTS!!!!! How do proteins help transport of materials through the membrane?
Answer:
Channel proteins can aid in the facilitated diffusion of substances by forming a hydrophilic passage through the plasma membrane through which polar and charged substances can pass.
Explanation:
Answer: By forming a continuous protein pathway across the membrane, these proteins enable specific hydrophilic solutes to cross the membrane without coming into direct contact with the hydrophobic interior of the lipid bilayer. Carrier proteins and channel proteins are the two major classes of membrane transport proteins.
magine a white bug and a brown bug on a brown rock. Which bug do you think a bird would most likely try to catch? Explain your choice.
white
Explanation:
the white bug is lighter so the bird will most likely to go for it
SOMEONE PLEASE HELP!!!!!
Five similarities and differences between a prokaryote and a eukaryote cell.
Answer:
Prokaryotic Cell Eukaryotic cell
Mitochondria absent Mitochondria present
Cytoskeleton absent Cytoskeleton present
Ribosomes smaller Ribosomes larger
Explanation:
two types of cells are found in the organisms: eukaryotic and prokaryotic depending on whether cells contain membrane-bound organelles or not.
what are the cell theories formulated by schwann and schielden?
Answer:
By the late 1830s, botanist Matthias Schleiden and zoologist Theodor Schwann were studying tissues and proposed the unified cell theory. The unified cell theory states that: all living things are composed of one or more cells; the cell is the basic unit of life; and new cells arise from existing cells.
Explanation:
Hope this helps
Please answer ! Best answers will be marked as brainliest and will be given thanks and 5 stars , Any unnecessary answer , will be deleted and will hack your points.
Answer:
A. Northern tropic, equator, Southern tropic (I think Im not double sure)
B. Because the sun's rays hit the earth's surface at a higher angle at the equator
C. If earth did not tilt and orbited in an upright position around the sun, there would be minor variations in temperatures and precipitation throughout each year as Earth moves slightly closer and farther away from the sun
D. It is the right distance from the Sun, it is protected from harmful solar radiation by its magnetic field, it is kept warm by an insulating atmosphere, and it has the right chemical ingredients for life, including water and carbon.
Explanation: hope it helps love :)
Describe the three types of waves that emanate from and earthquake. Compare their speed, type of motion and what the types of material they will travel through (solid/ liquid) PLZ HELP ME DUE TONIGHT!!!!!!!
Answer:
The types of waves that emanate from and earthquake are the body waves (P-waves and S-waves), and the surface waves. The surface waves travel along the suface, and are are the slowest, even though they do the most damage in an earthquake. While the P-waves travel the fastest through solids, liquids, and gases. S-waves, however only travel through solids.
Hope that helped! <3
within a forest ecosystem, there is a large amount of diversity among members of a warbler species. of the following stages of meiosis illustrated for a typical cell, which contributes most to diversity among the warblers?
Crossing over occurs between homologous chromosomes, and is closely involved in genetic variation. The stage that most contributes to diversity is stage C, where you can see chromosomes after crossing-over.
----------------------------
There are different mechanisms involved in producing genetic variation among descendants. These are,
Crossing-over between homologous chromosomes (prophase 1), Random lining of homologous chromosomes (metaphase 1),Random fertilizationThe Crossing-over events occur between two homologous chromosomes in the equatorial plane and make the daughter cells genetically different from the original one.
The Chiasma is the position where two homologous chromatids interchange genetic information, giving a place for new genetic material or information to be provided to descendants.
After crossing over, homologous chromosomes get separated again.
In the attached imaged there are four different stages of meiosis.
Stage C is the one that contributes the most to diversity.
We can see that crossing over has already occurred between homologous chromosomes, and they have already interchanged segments.
In the image you will see the difference between chromosomes that has gone through the crossing over mechanism, and chromosomes that has not. The difference in color represents segments interchange and variation.
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the enzyme dicer chops dsrna molecules into small pieces of
The enzyme dicer chops dsRNA molecules into small pieces of miRNA and siRNA. The correct option is B.
What is Dicer?
Dicer is an enzyme involved in RNA interference (RNAi), a cellular process that regulates gene expression.
Its primary role is to cleave double-stranded RNA (dsRNA) molecules into smaller fragments.
These fragments are typically around 21-25 nucleotides in length and serve as the building blocks for two types of small RNA molecules: microRNA (miRNA) and small interfering RNA (siRNA).
miRNAs are endogenous small RNA molecules that play a crucial role in post-transcriptional gene regulation. siRNAs are also small RNA molecules but are primarily involved in the defense against viral infections and the silencing of transposable elements.Thus, the correct option is B.
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Complete question:
The enzyme dicer chops dsRNA molecules into small pieces of:
A. mRNA and miRNA.
B. miRNA and siRNA.
C. siRNA and rRNA.
D. mRNA and siRNA.
Whereas sodium is found mainly in the extracellular fluid, most ________ is found in the intracellular fluid.
After the head is struck, the brain continues to move in the fluid and may be contused on the other side; this type of injury is called:
Answer:
contrecoupDefinition:
a contusion caused by the brain colliding with the skull on the side opposite the point of impact.