Helpppppp! ASAP
What is occurring in the diagram below?
A. Sister chromatids are separating.
B. Alleles are independently assorting.
C. Genes are replicating.
D. Segments of DNA are crossing over.
Answers
Answer:
D
Explanation:
The diagram below shows a portion of a chromosome during meiosis. Meiosis is a process of cellular division that produces haploid gametes from diploid cells. The process of meiosis involves two rounds of nuclear division.
What happens in the process of meiosis ?During the first round, homologous chromosomes pair up and exchange genetic material. This process is known as crossing over.
The diagram below shows a section of the chromosome during the first meiotic division. The chromosome is composed of two sister chromatids, which are identical copies of each other.
These sister chromatids are held together by a centromere. At this stage, the sister chromatids are in the process of separating from each other. The arrows indicate the direction of movement of the chromatids as they separate. The diagram also shows a section of the chromosome where the two sister chromatids have already separated.
This section is known as a chiasma, and it is the result of crossing over. During crossing over, segments of DNA from the two homologous chromosomes exchange places. This process creates genetic variation in the gametes, which is important for evolution.
In conclusion, the diagram shows sister chromatids separating, alleles independently assorting, segments of DNA crossing over, but not genes replicating. The correct answer is A. Sister chromatids are separating.
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Related Questions
An increase in heart rate (your heart pumps faster) results in...
A. No changes to cardiac output or pressure
B. Increase cardiac output and high pressure
C. Increased cardiac output but lower pressure
Answers
Answer:
B
Explanation:
give a reason why eggs shell is porous
Answers
Answer:
if it's porous it must absorb stuff
Explanation:
like a napkin
Answer:
Explanation:Directly under the chicken egg's shell are two membranes. When the eggs are laid by the mother they are warmer than the air, and as they cool the material inside the egg shrinks a little bit. ... The tiny pores in the shell allow the carbon dioxide to escape and fresh air to get in.
The kind of weathering caused by water freezing in rocks is known as Question 1 options: chemical weathering mechanical weathering root-pry pedalfer
Answers
The weathering of rocks that is caused by freezing in rocks and the attendant physical pressure, is called mechanical weathering.
What is weathring?
The term weathering refers to the breakdown of rock. This breakdown of rocks often leads to soli formation. There are many ways in which weathering may occur.
When weathring occurs as a result of freezing in rocks and the attendant physical pressure, this process is called mechanical weathering.
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7. Which type of mass movement occurs rapidly
when a single mass of soil and rock suddenly
slips downhill?
A. creep
B. landslide
C.mudslide
D. slump
Answers
Answer:
The most destructive type of mass movement is a landslide, which occurs when rock and soil slide quickly down a steep slope. Some landslides may contain huge masses of rock, while others may contain only a small amount of rock and soil. A mudflow is the rapid movement of a mixture of water, rock, and soil.
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Which group of pictures best represents a population?
А.
В.
C.
D
Answers
Answer:
C
Explanation:
because a population is a group of the same species that lives in a given area
Certain mental problems are thought to be caused by not having enough
neurotransmitters. Why would a lack of neurotransmitters cause problems?
A. Neurons would not be able to receive sensory messages.
B. Neurotransmitters send signals from neuron to neuron.
C. Neurons would not be able to grow longer.
D. Neurons would not be able to move to new areas.
Answers
Answer:
B. Neurotransmitters send signals from neuron to neuron.
Explanation:
Lack of neurotransmitters may cause problems because neurotransmitters send signals from neuron to neuron.
The lack of neurotransmitters cause problems because neurotransmitters send signals from neuron to neuron. Therefore, option (B) is correct.
A neurotransmitter is a molecule that a neuron secretes to influence another cell at a synapse. Another neuron, a gland or muscle cell, or the target cell, could be the cell that receives the signal.
Your body cannot function without chemical messengers called neurotransmitters. Chemical signals, or "messages," are carried from one neuron (a nerve cell) to the next target cell by them. The following objective cell can be another nerve cell, a muscle cell or an organ.
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The ATP produced by a plant cell is made in the process of CELLULAR RESPIRATION which occurs in the
A. endoplasmic reticulum.
B. ribosomes.
C. mitochondria.
Answers
Answer:
Mitochondria
Explanation:
Answer:
C
Explanation:
As mitochondria is the power house of plant cell.
internal fertilisation takes place………………………..
(a) inside male body
(b) inside female body
(c) outside female body
(d) outside male body
Answers
Answer:
b. inside female body
Because of the male sperm goes into the wormas egg and Fertilises it
Which type of tree ends up dominating many landscapes over time because they will slowly make it harder for other types of trees to grow?
Question 5 options:
Shrubs
Conifer
Deciduous
Grasses
Answers
Answer: conifer
Explanation: I took a test with the same question and I got it right but other than that I have no explanation
Answer: conifer
Explanation: i took the quiz and got it right
hope it helps:)
How does carbon move from the nonliving (abiotic) environment into the living (biotic) environment?
A.) fossil fuels take carbon dioxide out of the air
B.) plants take carbon dioxide from the air
C.) animals take carbon dioxide from the air
D.) carbon dioxide moves from the air into water
Plz help soon i'll mark brainliest
Answers
Answer:
b plants take carbon dioxide from the air
limestone can be a very jointed type of rock. which drainage pattern would you expect to see as a result
Answers
The drainage pattern one is expected to see in the limestone is trellis. The correct option is C.
What are trellis drainage pattern?Trellis drainage patterns form when sedimentary rocks like limestone are rolled up or slanted and then stripped away to varying degrees depending on their strength.
The Rocky Mountains of British Columbia and Alberta are prime examples of this, with trellis patterns found in many of the drainage systems.
Thus, the correct option is C.
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The missing options of the question are:
A. DendriticB. RadialC. TrellisD. RectangularWhat ecological process would be responsible for transforming this landscape?
A. primary succession
B. cyclical succession
C. seasonal succession
D. secondary succession
Answers
Which of the following is not a benefit to humans from biodiversity?
A. Many medications are made from living organisms
B. Enjoyment from recreational activities
C. We have a variety of products produced for clothing, food, and other items
D. The weather is more comfortable
Answers
For me it's letter A.
Because B and C and D are benefits of biodiversity....So that's why,for me it's letter A.
Well,don't trust me if you don't want to
Please help me, I really need help with this.
Answers
ANSWER PLS DONT PUT LINKS
Answers
Answer: C!! :)
Explanation:
Does grain size determine the porosity of a sediment type?
Answers
Answer:
Yes
Explanation:
In sediments or sedimentary rocks the porosity depends on grain size, the shapes of the grains, and the degree of sorting, and the degree of cementation. Well-rounded coarse-grained sediments usually have higher porosity than fine-grained sediments, because the grains do not fit together well
true or false
almost all cells have a nucleus
Answers
Answer:
True
Explanation:
Almost all cells have a nucleus. Haemoglobin is red blood cell but has no nucleus, prokaryotes have plasmid and not a nucleus sooo... Yea
what not to do when handling acids and bases
Answers
Wear protective gear (goggles, long-sleeved clothes, and gloves) when using acids and bases. Do not allow acids or bases to come in contact with skin or eyes. Limit the amount of acids and bases transported for usage around the house. Cap the bottles of acid and base cleaners tightly.
Please help me. no links I report you
Answers
I think the first graph, I'm not positive though.
By adding the tin atoms to copper, it makes the metal harder to
Helpp??
Answers
Answer:
Adding tin to copper during melting changes the properties of the metal. The larger tin atoms restrict the movement of the copper atoms, making the material harder.
Explanation:
Please brainliest
Create a mutant fly with any number of variations and mate it with a
wild-type fly. How many offspring are wild-type? What are the
phenotypes of the flies that are not wild-type?
Answers
Untamed type, a person who exhibits the typical phenotype, which is the phenotype typically present in a population of living things. Mutant, a person who deviates from the typical phenotype in some way.
What are the phenotypes of the flies that are not wild-type?The phenotypic of a species' normal form as it appears in nature is known as the wild type (WT). The wild type was initially thought to result from the “regular” standard allele at a location, as opposed to a non-standard, “mutant” allele.
Type wild, an individual with the typical phenotype, or the phenotype typically present in a population of living things in the wild. Mutant, a person, has a phenotype that is different from the typical phenotype.
Therefore, to characterize a gene in its natural, unaltered (unchanged), non-mutated form. Some cancer types have been linked to mutated (changed) versions of specific genes.
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1) WHAT IS DRY ICE?
2)WHAT IS HABERS PROCESS?
3)WHICH GAS IS USED TO TAKE OUT BLUE PRINTS?
4)WRITE FULL FORM OF IUPAC.
5)COPPER IS USED TO MAKE ELECTRIC WIRE,WHY?
6)SILVER IS USED FOR MAKING ORNAMENTS BUT NOT IRON,WHY?
7)WHAT IS SEX?
8)WHAT IS VAT?
Answers
Answer:
4)WRITE FULL FORM OF IUPAC.
Explanation:
1.Dry ice is the solid form of carbon dioxide. It is used primarily as a cooling agent, but is also used in fog machines at theatres for dramatic effects. Its advantages include lower temperature than that of water ice and not leaving any residue.
2.The Haber process, also called the Haber–Bosch process, is an artificial nitrogen fixation process and is the main industrial procedure for the production of ammonia today. It is named after its inventors, the German chemists Fritz Haber and Carl Bosch, who developed it in the first decade of the 20th century.
3.Ammonia gas
Ammonia gas is used as a developer in diazotype method to make blue prints.
4.The International Union of Pure and Applied Chemistry (IUPAC /ˈaɪjuːpæk, ˈjuː-/) is an international federation of National Adhering Organizations that represents chemists in individual countries.
5. All metals have some amount of resistivity to electrical currents, which is why they require a power source to push the current through. The lower the level of resistivity, the more electrical conductivity a metal has. Copper has low resistivity, and therefore is an excellent conductor.
6.gold and silver are used to make ornaments because in they are the least reactive and do not react with any thing . Gold and silver are ductile (cam be made into thin wires ) and they have a metallic lustre.
7. I am too smalll I am frecking 10 yrs
8. A value-added tax, known in some countries as a goods and services tax, is a type of tax that is assessed incrementally. It is levied on the price of a product or service at each stage of production, distribution, or sale to the end consumer.
Questions:
1) WHAT IS DRY ICE?
2)WHAT IS HABER'S PROCESS?
3)WHICH GAS IS USED TO TAKE OUT BLUE PRINTS?
4)WRITE FULL FORM OF IUPAC.
5)COPPER IS USED TO MAKE ELECTRIC WIRE,WHY?
6)SILVER IS USED FOR MAKING ORNAMENTS BUT NOT IRON,WHY?
7)WHAT IS SEX?
8)WHAT IS VAT?
Answer:
1) Dry ice is solid carbon dioxide (CO₂).
2) The Haber process, also called the Haber–Bosch process
3)Ammonia is used in blueprint developing machines in both forms.
4)The International Union of Pure and Applied Chemistry (IUPAC /ˈaɪjuːpæk, ˈjuː-/) is an international federation of National Adhering Organizations that represents chemists in individual countries.
Headquarters: Research Triangle Park, North ...
Formation: 1919; 102 years ago
President: Christopher M.A. Brett (Portugal)
Membership: ICSU
5)All metals have some amount of resistivity to electrical currents, which is why they require a power source to push the current through.
6)Silver is used to make mirrors, as it is the best reflector of visible light known, although it does tarnish with time. It is also used in dental alloys, solder and brazing alloys, electrical contacts and batteries.
7)Human sexual activity, human sexual practice or human sexual behaviour is the manner in which humans experience and express their sexuality.
8)A value-added tax, known in some countries as a goods and services tax, is a type of tax that is assessed incrementally.
Main features of Solar System, Main facts of solar system
Answers
Answer:
The main features of the solar system:
The Sun is our nearest star.
The planets orbit the Sun.
The time taken to orbit the Sun increases with distance from the Sun.
Gravity keeps the planets in orbit around the Sun and the moons in orbit around their planets.
From the Sun, the order of the planets is Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune. You might need to be able to recall this in the exam.
The planets go around the Sun in slightly squashed circular elliptical orbits.
Pluto is classified as a dwarf planet or planetoid. It has a highly elliptical or eccentric orbit.
Main facts
The definition of a planet and a moon is fuzzy. ...
Comets and asteroids are leftovers. ...
The planets are all on the same “plane” and orbit in the same direction. ...
We're nowhere near the center of the galaxy. ...
But the Solar System is bigger than you think. ...
The Sun is hugely massive. ...
Explanation: (:
Organisms that are members of the family Coccinellidae are heterotrophic, reproduce sexually, and are multicellular. Knowing this, we can be certain they belong to which kingdom? А Animalia B Plantae C Eubacteria D Protista
Answers
Answer:
they belong to kingdom (A). Animalia.
Take a moment to examine these images of cells and their surrounding membranes. You already know that the cell membrane protects the cell from the external environment and controls what substances enter and exit the cell. As you study the pictures, consider the following questions: Which of the two cells do you think is more efficient at transporting materials through the cell? Why?
Answers
Answer:
Where is the pic.........
explain reproduction in snail
Answers
In order for a neuron to receive and transmit a message it must be in a polarized state. While in this rest state there are more sodium ions outside the cell membrane while potassium is prevalent inside the cell. This causes the neuron to maintain a neutral charge. Once the action potential arrives at its [ Select ] , a nerve cell will shuttle the message down its own axon and to the next neuron via its [ Select ] . This impulse will cause the cell to become [ Select ] and will effectively change the charge of the neuron to a [ Select ] charge. After sodium rushes into the cell, the potassium will rush out in order to [ Select ] . Once the impulse reaches the axon terminal, it is [ Select ] that stimulates a [ Select ] to continue the message to the next neuron. The neuron then undergoes a [ Select ] when all ions are repositioned with help of the
Answers
Answer:
The process of nerve impulse transmission by means of an action potential involves the processes of depolarization, repolarization, hyperpolarization and restoration of resting memebrane potential.
Explanation:
In order for a neuron to receive and transmit a message it must be in a polarized state. While in this rest state there are more sodium ions outside the cell membrane while potassium is prevalent inside the cell. This causes the neuron to maintain a neutral charge. Once the action potential arrives at its dendrites, a nerve cell will shuttle the message down its own axon and to the next neuron via its axon terminal. This impulse will cause the cell to become depolarized and will effectively change the charge of the neuron to a poositive charge. After sodium rushes into the cell, the potassium will rush out in order to restore its resting memebrane potential. Once the impulse reaches the axon terminal, it is used to open voltage- gated calcium channels releasing calcium ions that stimulates a neurotransmitter to continue the message to the next neuron. The neuron then undergoes a repolarisation when all ions are repositioned with help of the voltage-gated ion channels.
PLZ HELP!!!
What line up during meiosis metaphase II at the metaphase plate?
O a) Homologous chromosomes
b) Sister chromatids
c) Aster
d) Microtubes
Answers
Answer:
B sister chromatids
Explanation:
the haploid number of still duplicated chromosomes align at the metaphase plate. sister chromatids separate, becoming daughter chromosomes that move to the poles.
Which is evidence of climate change due to geological evolution?
gases found in the atmosphere
fossils buried in sedimentary rock
tropical plant fossils found in the jungle
fossils from ocean organisms found in what is now a desert
Answers
Answer:
Evidence from the geological record is consistent with the physics that shows that adding large amounts of carbon dioxide to the atmosphere warms the world and may lead to: higher sea levels and flooding of low-lying coasts; greatly changed patterns of rainfall2; increased acidity of the oceans 3,4,5,6; and decreased.
Do plants produce more oxygen than they need?
Answers
Answer:
Photosynthesis uses carbon dioxide to make sugar and produces oxygen as a byproduct. Respiration uses oxygen to release energy from stored sugar and produces carbon dioxide as a byproduct. ... However, if the plants are growing, then over a period of 24 hours they will produce more oxygen than they consume.
