During prophase, the 2 duplicated sister chromatids are {{c1::joined at their centromeres}}
Answers
During prophase, the two duplicated sister chromatids are indeed joined at their centromeres.
At this stage of mitosis, the chromosomes condense and become visible under a microscope. The duplicated chromosomes, or sister chromatids, are held together by a protein complex called the centromere, which is located at the center of each chromosome. The centromere serves as the attachment site for the spindle fibers that pull the sister chromatids apart during later stages of mitosis.Chromatids are the two identical copies of a replicated chromosome that are joined together by a structure called the centromere. Chromosomes are made up of DNA and proteins, and they carry genetic information that is passed down from parent cells to daughter cells during cell division. When a cell undergoes DNA replication in preparation for cell division, each chromosome is replicated to produce two identical sister chromatids. The sister chromatids are then pulled apart during cell division, with each daughter cell receiving one chromatid from each replicated chromosome.
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Related Questions
In tomatoes, tall vine (T) is dominant to dwarf vine (t), and red fruit (R) is dominant to yellow fruit (r).
A gardener crosses a dihybrid tall tomato plant bearing red fruit with a true-breeding dwarf tomato plant with yellow fruit.
1. Describe the possible phenotypes and genotypes of the plants. Responses should include expected phenotype ratios. Explain your reasoning as needed.
2. If 100 of these tomato plant offspring were planted, how many plants would you predict you would find of each phenotype.
Please help
Answers
Answer:
Possible genotypes: TtRr, Ttrr, ttRr, ttrr
Possible phenotypes: Tall with red fruit, tall with yellow fruit, dwarf with red fruit, darf with yellow fruit
Number of plants with the phenotype:
Tall with red fruit - 25 plants
Tall with yellow fruit - 25 plants
Dwarf with red fruit - 25 plants
Darf with yellow fruit - 25 plants
Explanation:
To find the genotypes create a punnett square like the one in the image
To find the phenotypes examine the genotypes and detemine if they carry a dominant allele for the trait, if they have at least one dominant allele then the dominant trait that will be expressed, if they have two recessive alleles then the recessive trait will be expressed
To find how many plants that will have a phenotype if 100 plants were planted divide the number squares that have a particular phenotype from the punnett squares and divide that number by the number of total squares. Then multiply by 100
4÷16×100 = 25
Please no links
Please Help as soon as you can
Answers
Answer:
The answer is most likely D "condensation, then evaporation"
Answer:
evaporation then condensation. basic stuff
Explanation:
natural selection is the phenomenon in which certain phenotypes have than other phenotypes. multiple choice question. greater reproductive success more success in gathering nutrients perfect adaptations to the environment longer lifetimes
Answers
The correct answer to your multiple-choice question is "greater reproductive success".
Natural selection is the process by which organisms with advantageous traits or characteristics that allow them to survive and reproduce in their environment have a higher likelihood of passing those traits on to their offspring. This leads to an increase in the frequency of those traits within a population over time. Therefore, individuals with greater reproductive success have a higher chance of passing on their advantageous traits to the next generation, leading to the evolution of a population. Reproductive success is a crucial component of natural selection as it determines which traits are passed on and which ones are not. To summarize, natural selection favors traits that increase an organism's chances of reproductive success and passing on its genes to future generations.
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Which organelle is considered the control center of the cell or the "brain" of the cell? It contains all the DNA or the instructions to carry out the function of the cell.??
Answers
Answer:
Cell Nucleus
Explanation:
The nucleus is perhaps the most important structure inside animal and plant cells. It is the main control center for the cell and acts kind of like the cell's brain.
The endosymbiotic hypothesis argues that prokaryotes became some of the organelles of early eukaryotic cells. This would be supported by what evidence
Answers
The endosymbiotic hypothesis is supported by several lines of evidence, including the presence of double membranes in certain organelles, the presence of their own DNA, and their ability to replicate independently within the cell.
The endosymbiotic hypothesis suggests that certain organelles found in eukaryotic cells, such as mitochondria and chloroplasts, originated from free-living prokaryotic organisms that were engulfed by ancestral eukaryotic cells.
This hypothesis is supported by several lines of evidence. Firstly, these organelles have double membranes, which could be a result of the engulfment process. The outer membrane is thought to represent the host cell membrane, while the inner membrane is believed to be derived from the prokaryotic membrane.
Secondly, mitochondria and chloroplasts possess their own DNA, which is separate from the nuclear DNA of the host cell. This indicates that they were once independent organisms with their own genetic material. Lastly, these organelles have the ability to replicate independently within the cell, similar to prokaryotes.
These pieces of evidence provide support for the endosymbiotic hypothesis, suggesting that certain organelles in eukaryotic cells have evolved from ancestral prokaryotes through a process of endosymbiosis.
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The adaptations of a pelican include its long, pouch-like beak. Why is the beak of the pelican an example of an adaptation?
A.
The beak is a unique feature that is found only in pelicans.
B.
All birds have beaks, but the beaks vary among different species.
C.
The shape and structure of the beak have remained the same over many generations.
D.
The shape and structure of the beak are inherited and help the pelican survive in its environment
Answers
Answer:
D. The shape and structure of the beak are inherited and help the pelican survive in its environment
Explanation:
Hope this helps!
What does the breakdown and absorption of minerals look like step by step and which organs are involved?
Answers
Answer:
During the process of absorption, nutrients that come from the food (including carbohydrates, proteins, fats, vitamins, and minerals) pass through channels in the small intestine into the bloodstream. The blood works to distribute these nutrients to the rest of the body.
Explanation:
What are the characteristics of the Negev Desert?
Answers
Answer:
Israel's southern region is desert. Despite having little water, it has extremely productive soil that receives irrigation watering. As a result, it is still a crucial area for agricultural output.
sorry im just bored rlly
Explanation:
Answer:
Negev is large desert region in southern Israel and has sand dunes that reach heights of up to 30 meters. Vegetation in the Negev is sparse, and the area receives very little rain annually. The area is characterized by different types of aerosols, including desert dust, maritime, and anthropogenic pollution.
I will give brainliest!!!!!!!!!!!!!!!
When a plant starts to wilt, it's often due to a lack of water, which makes its cells flaccid, or limp. When a plant looks healthy, it's often due to proper watering, making its cells turgid, or upright.
What cell structure is most likely responsible for whether or not a plant cell is flaccid or turgid?
Choose 1 answer:
(Choice A)
A
Vacuole
(Choice B)
B
Lysosome
(Choice C)
C
Mitochondria
(Choice D)
D
Chloroplast
Answers
Answer:
The answer is a
Vacuole is most likely responsible for whether or not a plant cell is flaccid or turgid. So, the correct option is (A).
What is Plant cell?Plant cell is the basic unit of all plants. Plant cells are eukaryotic in nature. They have a membrane-bound nucleus and organelles. Plant cells have a cell wall surrounding the cell membrane.
The cell wall has many functions on which the life of the plant depends. Plant cell walls are composed of cellulose, which distinguishes them from other organisms with cell walls, such as bacteria (peptidoglycan) and fungi (chitin). Algal cell walls are similar to those of plants, and many contain specific polysaccharides that are useful for classification.
Examples of plant cells include different specialized cells like parenchyma, sclerenchyma and collenchyma cells.
Thus, Vacuole is most likely responsible for whether or not a plant cell is flaccid or turgid. So, the correct option is (A).
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True or False: When carbon dioxide is released into the atmosphere from
burning fossil fuels, it makes the Earth colder.
Answers
Answer:
False.
Explanation:
Carbon Dioxide is considered a greenhouse gas. This means that when released into the atmosphere, it forms a "blanket" of gas that traps heat. This phenomenon causes a rise in temperature.
The answer is definitely FALSE
Day 16: SC.6.L.14.2 What are the three parts of the cell theory? (PG. 131) 1. All __________ are made of _________________ or _____________________ cells. 2. The ______________ is the basic unit of all __________ things. 3. All D_____________ comes from ______________________ cells.
Answers
Answer:
1. organisms, one, more
2. cell, living
3.cells, pre-existing
Explanation:
The cell theory is an important historical scientific theory that is valid and accepted universally that has three major parts about the cell. This theory says that all organisms comprised and build of one or more cells.
This theory also states that the cell is the basic and fundamental unit of all living organisms. Virchow made a contribution to the cell theory later. The third and important part of the cell theory is that all cells are produced by the cell already exist.
b. an unknown organism is found in the forest and the gene is sequenced as follows: unknown: c c a t g g a a t c g a using the table above, what kind of an animal do you think this is?
Answers
Answer: I believe its something close to a pig
Explanation:The DNA sequence is closest to the pig . The amino acids Gly, Thr, Leu, and Ala are from the "unknown animal." On the worksheet, the pigs amino acids are Gly, Thr, Phe, and Ala. There is only one different amino acid between the two.
I might be wrong but there u go
Permanent instructions issued in order form that apply to all members of a command are know by what term?
Answers
The term that is used for permanent instructions issued in order form that apply to all members of a command are known as GENERAL ORDERS.
General Orders are a set of instructions issued to all members of the armed forces. These general orders are written in a permanent order format that all the members of the command follow. These instructions help to maintain discipline and order within the military hierarchy. These orders are general and have been designed to be applicable to all members of the command. They are a set of orders that need to be followed by the members of the armed forces, without any deviation.
There are three main categories of general orders that military personnel must adhere to. They are as follows:
General Orders for guards.
General Orders for sentries.
General Orders for challengers.
The General Orders are permanent instructions, which means they will remain valid until they are updated, revoked, or replaced.
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Why does the amount of energy DECREASE as you move up the pyramid?
It is absorbed by the sun
It is lost as heat
The animal vomits part of it's food
Answers
Answer:
It is the second option. Lost as heat.
Answer:lost at heat
Explanation:
facrtors that affect blood flow through the capillaries
Answers
Answer:
volume of the blood
cardiac output
Explanation:
volume of the blood viscosity of the blood blood vessel length and diameter cardiac out put complianceBut I'm not sure
What molecule acts as an electron acceptor in glycolysis.
Answers
Answer:
NADH
Explanation:
Could someone help : how does the number of offspring that are produced by an individual typically compare with the fecundity of that individual? What factors create this (think of reproductive potential)
Answers
Answer:
The number of offspring produced is often related to the amount of parental care. Typically, the higher fecundity, the lower the amount of time parents devote to caring for the offspring.
The number of offspring that are produced by an individual typically varies with the fecundity, as the higher the fecundity, the lower the parental care per offspring, while a lower fecundity leads to more parental care.
What is parental care in the animal kingdom?Parental care refers to the behaviors of parents for the care of their offspring, and in the animal kingdom, parental care can take many forms, ranging from simple behaviors like providing food and shelter to more complex behaviors like teaching and training offspring and parental care is important for the survival and development of offspring, as it can improve an offspring's chances of survival by providing them with resources, protection, and guidance.
Hence, the number of offspring that are produced by an individual typically varies with the fecundity, as the higher the fecundity, the lower the parental care per offspring, while a lower fecundity leads to more parental care.
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What knowledge did Darwin’s theory need in order to be tested, which he didn’t have at the time?
A. Adaptations
B. Age of the Earth
C. Living organisms
D. Fossils
Answers
Answer:
B. Age of the Earth
Explanation:
The answer can be found on the slide with the heading "Could Darwin Explain Everything?"
Victorian scientists found it difficult to test Darwin's theory. For Darwin's theory to work, the Earth needed to be millions of years old, but it's age was not known at the time.
Therefore, the answer is B. Age of the Earth.
Another name for a convex lens is a converging lens. Converging means…
A. Brings light into focus (beams come together)
B. Spreads light our or focus (beams spread apart)
Answers
Answer:
A
Explanation:
Answer:
A. Brings light into focus (beams come together)
Explanation:
Converging lens or convex lens is a type of lens on which parallel rays of light after refraction converge or meet at the focus of the lens.
Hope it helps.
If you have any query, feel free to ask.
If a yellow halo is present around a colony on a mannitol salt agar (MSA) plate, the bacterium cannot ferment mannitol.
true
false
Answers
If a yellow halo is present around a colony on a mannitol salt agar (MSA) plate, it indicates that the bacterium can ferment mannitol. hence the statement is not true, it is false.
Mannitol salt agar is a selective and differential medium commonly used to culture and differentiate Staphylococcus species, particularly Staphylococcus aureus.
The medium contains high salt concentration, which inhibits the growth of most bacteria except for staphylococci that can tolerate such conditions.
The differential aspect of MSA is due to the inclusion of mannitol, a sugar alcohol, as the fermentable carbohydrate source. Staphylococcus species that are capable of fermenting mannitol produce acid as a byproduct of fermentation.
This acid production causes a drop in the pH of the agar surrounding the bacterial colony, leading to a change in the pH indicator present in the medium.
The pH indicator in MSA is typically phenol red, which turns yellow in an acidic environment.
Therefore, if a yellow halo is observed around a bacterial colony on an MSA plate, it signifies that the bacterium can ferment mannitol and produce acid.
In summary, the presence of a yellow halo around a colony on an MSA plate indicates that the bacterium is capable of fermenting mannitol, not the other way around.
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4. The results of a genetic process are represented in the diagram.
allele a
allele A
allele bad
allele B
Homologous Chromosomes
Which of the following would increase due to the process shown above?
Answers
Answer:
— cellular organelle is represented by the diagram below? A) cell wall. B) molecules ... of bacteria that reproduce by the process shown below. Which statement ... A) the same genetic information as both of its parents. B) different genetic ... Asexual reproduction of a diploid cell normally results in new cells that ...
Explanation:
Explain howchanges in ecosystems affect ecosystem stability
Answers
Is it always the employees responsibility to make sure they wear their respiratory
Answers
Answer:
Yes.
Explanation:
They’re putting others at risk if they don’t use their masks.
What are the ways that specialized cells group together? Select all that apply. Question 10 options: Organ systems combine to form an organism Organs with related functions group to form a differentiated cell Tissues with similar functions form an organ Cells with similar functions form a tissue.
Answers
Answer:
Organ systems combine to form an organism
Exhttps://brainly.com/question/26571513#:~:text=Tissues%20with%20similar-,functions%20form%20an%20organ%20Cells%20with%20similar%20functions%20form%20a%20tissue.,-Answer%3Aplanation:
In hyperglycemic state- which will act: glucagon or insulin? How about hypoglycemic?
Answers
Answer:
Hyperglycemic - insulin
hypoglycemic - glucagon
Explanation:
glucagon increases blood sugar
insulin lowers blood sugar
hyperglycemic is high blood sugar so you would choose the one that lowers blood sugar aka insulin
hypoglycemic is low blood sugar so you would choose the one that increases blood sugar which is glucagon
help please!!!??????
Answers
Answer:
Soil: The unconsolidated mineral or organic material on the earth's immediate surface, which is used to grow soil plants Soils top limit lies in the boundary of soil and air, shallow water, live plants, or non-disintegrating plant materials.
Minerals: A mineral is an inorganic solid with a natural occurrence, a certain chemical composition, and an orderly atomic structure.It gets simpler if you break it down. Naturally, minerals are present. They're not made by people.
Soil Particle Size: Particle sizes are either determined by the capacity for various mesh sieves, or by the rate at which they are placed in water.
Soil Profile: The soil profile is a vertical soil section and enables you to investigate the soil structure.
O-horizon: are layers of soil with a high organic matter percentage. There are typically three different organic layers within the forests: one of leaves, pine needles and branches (Oi); underlined by a partially decomposed layer (Oe); and a very dark layer of decomposed humus (Oa).
A-horizon: contains deposits of organic matter leached from surface soils
B-horizon: a ground level below the horizon from which organic matter is obtained by illuviation, and which normally stands out by a reduced weathering, is directly below the horizon.
Explanation:
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Which statement best explains why breaks of finches in the Galapagos islands are different based on what to eat? A. Different organisms interact with each other. B. Individual parts work together to perform a function. C. Structure and function are tied together or related in living things. D. All life must maintain homeostasis in older to survive Please help me
Answers
Answer:
Explanation: A. Different organisms interact with each other
During meiosis, homologous chromosomes line up next to each other. In some
cases, one arm of a chromatid crosses over the arm of another chromatid. What is
the result of this process?
the independent assortment of genetic material
the creation of an additional sex cell
continuity in the offspring cell's DNA
additional variation in the DNA of each sex cell formed
Answers
This is known as Crossing Over and results in further variation in offspring
Crossing over is a mechanisms involved in introducing genetic variation. When the arm of a chromatid crosses over the arm of another chromatid, it results in additional variation in the DNA of each sex cell formed. Option D.
---------------------------------------
Crossing-over between homologous chromosomes (prophase 1), the random lining of homologous chromosomes (metaphase 1), and random fertilization are the mechanisms involved in genetic variation.
The 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.
So, according to this information, when the arm of a chromatid crosses over the arm of another chromatid, it results in additional variation in the DNA of each sex cell formed.
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What are some similarities and differences between an angiosperm and a gymnosperm? PLEASE
Answers
Answer:
Here are some similarities and differences
Explanation:
Both are more highly evolved than nonvascular plants, both are vascular plants with vascular tissue that live on land and reproduce by making seeds, both are classified as eukaryotes
Only angiosperms are known as flowering plants, many have blossoms and fruits that contain seeds and the typically drop their leaves when the seasons change their leaves are flat and are seasonal in their life cycle
Gymnosperms produce uncovered seeds, most have green needle-like leaf structures, they are generally evergreen
levels of organizational hierarchy
Answers
Answer:
Most organizations have three management levels: first-level, middle-level, and top-level managers. These managers are classified according to a hierarchy of authority and perform different tasks.
Explanation: