Much like a ball of yarn is made of strands of strings, this x- shaped structure is made of what?
Answers
Answer:
The X-shaped structure is made of strands of DNA.
Explanation:
The chromosomes are thread-like structures located in the nucleus of each cell in the body. In a human cell, there are 23 pairs of chromosomes found in the nucleus. Each chromosome is made up of strands of DNA tightly coiled many times around proteins called histones which gives support to its structure.
The chromosomes are X-shaped and are observed only in a cell undergoing division by mitosis or meiosis. Each of these X-shaped chromosomes consists of two identical sister chromatids. The sister chromatids are connected to each other by a region of the chromosome called the centromere. The centromere are located around the depression point of the chromosome which divides the sister chromatids into two regions: long arm called the q arm and a shorter arm called the p arm. During mitosis, spindle fibers attach to this region, and they eventually pull the sister chromatids apart to form two separate chromosomes, one for each daughter cell.
Related Questions
Explain how a small occurrence, such as a farmer fertilizing a field, could result in a major change in the ecosystem of a pond.
BTW this is on algae blooms
Answers
Answer:
Explanation:
Nutrient pollution is the process where too many nutrients, mainly nitrogen and phosphorus, are added to bodies of water and can act like fertilizer, causing excessive growth of algae. Nutrients can run off of land in urban areas where lawn and garden fertilizers are used.
which cell organelle is responsible for a child having treacher-collins
Answers
Answer:
A change in the gene TCOF1 causes up to 93 per cent of cases of Treacher Collins syndrome. This gene, located on chromosome 5, is responsible for facial development.
What is the probability that they will have a two headed baby?
Answers
Answer:
It would have been impossible to separate them surgically had they survived, doctors said. Twins born with two heads, but sharing one body, are known as dicephalic parapagus. It affects around one in a million births.
Explanation:
how many nucleolus can a single cell have?
Answers
Answer:
five nucleoli
Explanation:
step by step explanation
Una persona hala un trineo a lo largo de un espacio horizontal de 9 m la cuerda con que sa hala forma un ángulo de 60° con la horizontal y la fuerza para mover el trineo es de 125 N a. Calcular el trabajo realizado por la persona al halar el trineo
Answers
Answer:
978,75 Newton metro.
Explicación:
El trabajo realizado es de 978,75 Newton metro cuando la fuerza es de 125 newton, la distancia es de 9 metros y el ángulo es de 60 grados porque cuando usamos la fórmula del trabajo realizado obtenemos esta respuesta. La fórmula del trabajo es fuerza x desplazamiento x Sin (θ). θ muestra la dirección y el ángulo en el que se realiza la fuerza. Entonces, multiplicando todos estos valores obtenemos la respuesta para el trabajo realizado, que es 978,75 Newton metro.
true or False? Bacteria are not organisms because they have no organs.
Answers
Answer:
i think it is false?
Explanation:
sorry if wrong
Bacteria are organisms, although they are unicellular and do not have organelles like multicellular organisms. So, the given statement is False.
What is Bacteria?Microorganisms which are unicellular, prokaryotic, and have a straight cell structure are known as bacteria. They are present in almost every part of the planet, including soil, water and the human body. Many ecological and biological processes, such as nutrient cycling, decomposition, and symbiosis, depend heavily on bacteria.
While some bacteria can cause disease, many others, such as those that live in the gut and support digestion, are helpful and important for maintaining human health. Bacteria can vary in shape, size, and structure, and they can be divided into several categories according to these characteristics.
Therefore, the given statement is False.
Learn more about Bacteria, here:
https://brainly.com/question/24197659
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Six carbon dioxide molecules reacting with six water molecules and sunlight to produce 6 glucose molecules and 6 oxygen molecules is a chemical reaction used by_______________ to make food. *
mammals
blue-green algae, cyanobacteria, and larger plants
pachyderms
reptiles
Answers
HELP I NEED HELP ASAP
HELP I NEED HELP ASAP
HELP I NEED HELP ASAP
HELP I NEED HELP ASAP
PLEASE Answer each question correctly.
Answers
Answer:
Explanation:
1 . 3% of the earth's water is fresh. 2.5% of the earth's fresh water is unavailable: locked up in glaciers, polar ice caps, atmosphere, and soil; highly polluted; or lies too far under the earth's surface to be extracted at an affordable cost. 0.5% of the earth's water is available fresh water.
3 .Infiltration is the process by which water on the ground surface enters the soil. Infiltration is governed by two forces, gravity, and capillary action. While smaller pores offer greater resistance to gravity, very small pores pull water through capillary action in addition to and even against the force of gravity.
4.Water is removed from the surface of the Earth to the atmosphere by two distinct mechanisms: evaporation and transpiration. Evaporation can be defined as the process where liquid water is transformed into a gaseous state. Transpiration is the process of water loss from plants through stomata.
5.Water at the Earth's surface evaporates into water vapor which rises up into the sky to become part of a cloud which will float off with the winds, eventually releasing water back to Earth as precipitation.
in his 1859 book On The Origin of Species, Charles Darwin discusses the theory of evolution and his model of natural selection. An adapted passage from this book is shown below.
A. fossils show a complete a complete of all species preserved from the past.
B. fossils are used by scientists to predict future extinction rates of species.
C. fossils give scientists proof that species rate of evolution depends on time.
D. fossils provide evidence of the past that shows how species have changed over time.
someone please help i’m literally failing because i haven’t done this lol..
Answers
Answer: fossils provide evidence of the past that shows how species of changed over time.
Explanation:
My teacher said it
Fossils are traces of organisms that did not live in the past.5 a. TRUE b. FALSE
Answers
Answer:
true
Explanation:
Blood type is inherited thriugh mutiple alleles , inculding I ^a , I^b and i . A child has type A blood. If the father has type AB blood , what are all the possible phenotypes of the mother
Answers
Answer:
The answer is below
Explanation:
The possible phenotypes of the mother can be any of the following
AA - A phenotype
AB - AB phenotype (here the mother must have contributed an A gene for it to be possible)
AO - A phenotype (here the mother may have contributed any of the A or O gene.)
BO - B phenotype (here, the mother would only need to contribute O gene for this to be possible)
 If a cell has 8 chromosomes, how many chromosomes will each of its daughter cells have after mitosis? A.4 B.6 C.8 D.16
Answers
After mitosis, each daughter cell would have 8 chromosomes because these daughter cells contain equal and same kind of chromosomes with respect to their parental cell. So, it's C.
What do you mean by Mitosis?Mitosis may be defined as a type of cell division that produces two daughter cells enclosing the identical number and type of chromosomes as the parent cell.
Therefore, the correct option for this question is C.
To learn more about Mitosis, refer to the link;
https://brainly.com/question/19058180
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the temperature that is equivalent to 95°F
Answers
Answer:
35 degrees celsius
Temperature
95
Fahrenheit
35
Celsius
Formula
(95°F − 32) × 5/9 = 35°C
More info
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Investigator Murray is examining evidence from an old crime scene. She has a blood sample, but she believes that the sample may be too degraded to get DNA from. Investigator Murray decides to try to retrieve mtDNA from the sample and compare it to a sample from her suspect. What information could this sample give her?
A The blood at the crime scene belonged to her suspect.
B The suspect has blond hair and blue eyes.
C There is a maternal relation between the two people.
D The person from the crime scene has been near the suspect.
Answers
The answer is C.
Explanation:
They explained that "Investigator Murray decides to try to retrieve mtDNA from the sample and compare it to a sample from her suspect. What information could this sample give her?"
mtDNA: Mitochondrial DNA (mtDNA) can also be useful to investigators and is found in the energy-producing organelles called mitochondria. This type of DNA can sometimes be recovered from evidence that is too degraded or old to yield regular DNA. Although mtDNA can't be linked to one individual, it can show that subjects are maternally related, since it is passed down through the maternal side of the family.
Note to you:I took the test and the definition of mtDNA (also known as Mitochondrial DNA) came from my notes. Have a good one and I hope it helps!! :)
What similarities in the development lead scientists to infer that opossums ,chickens, salamanders,and fish share a common ancestor?
Answers
During the early stages of development all 4 organisms have a tail and a row of tiny slits along their throats
3. Which property of a star is closely related to its temperature? *
Answers
In a system, the energy or material that leaves a system are referred to as the ____________.
A.outputs
B.inputs
C.components
D.processes
Answers
What is respiration?
Answers
☁️ Answer ☁️
annyeonghaseyo!
Your answer is:
"Respiration constitutes a series of enzyme-driven reactions that allow plants to turn the stored energy of carbohydrates made via photosynthesis into a form of energy they can use to power growth and metabolic processes."
Hope it helps.
Have a nice day noona/hyung!~ ￣▽￣❤️
Fill in the blanks: a heterogeneous mixture is made of parts that _____ distinguishable from each other.
Answers
Answer:
are
Explanation:
In a heterogenous mixture, it is easy to tell the different pieces and parts from each other. For example, cereal with fruit added to it, or trail mix made of peanuts, raisins and candy. You can easily see the parts of the mixture. A homogenous mixture is one in which you can't see the parts easily, like ketchup or the air we breathe.
NEED HELP ASAP:
Which of the following describes DNA methylation?
A.) A mechanism involving attachment of methyl groups to certain bases to increase the rate of transcription.
B.) A mechanism involving attachment of methyl groups to certain bases to facilitate the binding of DNA to intermediate filaments.
C.) A mechanism involving attachment of methyl groups to certain bases leading to apoptosis.
D.) A mechanism involving attachment of methyl groups to certain bases for the long-term inactivation of genes during development.
Answers
Hello, I Am BrotherEye
Answer:
D.) A mechanism involving attachment of methyl groups to certain bases for the long-term inactivation of genes during development.
Explanation:
View Above
Best Of Luck
~
BrotherEye
The statement that can be used to describe DNA methylation is "A mechanism involving attachment of methyl groups to certain bases for the long-term inactivation of genes during development."
Option D.) is correct.
Define DNA methylation.DNA methylation controls gene expression by attracting proteins implicated in gene repression or preventing transcription factor(s) from binding to DNA. The pattern of DNA methylation in the genome varies during development as a result of a dynamic process that includes both de novo DNA methylation and demethylation.
DNA methylation is an epigenetic mechanism that happens when a methyl group is added to DNA, altering the function of genes and influencing gene expression.
It's a process that involves attaching methyl groups to specific bases in order to inactivate genes for a lengthy time throughout development.
So, the statement that can be used to describe DNA methylation is option D.)
Find out more information about DNA methylation here:
https://brainly.com/question/6612810?referrer=searchResults
Can anyone please answer it for me pleaseeeeee
Answers
Answer:
what is the question
Explanation:
tell we we will solve it within minutes
Answer:
Hi, I don't see any of the following questions
Which argument explains how a sugar molecule can form a protein?
Answers
Answer:
options
Explanation:
O fenômeno que troca parte das cromátides - irmãsna meiose para ter maior variabilidade genética, denominado de crossing over ocorre na: * 1 ponto A) telófase. B) Anáfase. C) Metáfase. D) Telófase. E) Prófase.
Answers
Answer:
E. Proface/ Prophase
Explanation:
The correct answer to the given question is given below,
E. Prophase
The explanation to the given answer is given below,
The phenomenon that changes the part of the chromatids meiosis to have a greater amount of genetic variability is occured in the prophase.
What is the speed of the car at 15 seconds time?
Answers
9. Nulceus
(1 Point)
O plant
O animal
O both
10. Vacuole
(1 Point)
O plant
O animal
O both
Answers
Answer:
1. Both2. Both
Hope this helps!
The embryos of both mammals and reptiles are protected by amniotic fluid. What is this type of trait called? *
a. cladogram
b. outgroup
c. derived
d. molecular evidence
Answers
Answer:
c)derived
is the correct answer I think so
hope it is helpful
How would i give a physical description of the Ebola Virus?
Not a description of symptoms, but a physical description of the pathogen itself.
Answers
Why are graphs useful when interpreting data? They make trends in the data easier to see. O They are easier to create than data tables. O They take the place of pictures in a report . They can be used to show additional data. Mark this and return Save and Exit Submi
Answers
Amoebas are single-celled organisms that contain a nucleus. They are
O eukaryotic
O bacterial
O fungal
O prokaryotic
Answers
Answer:
eukaryotic
Explanation:
eukaryotic
( it deleted my answer)
Which best explains the zygote?
It has a diploid number of chromosomes.
It has a haploid number of chromosomes.
It has all the chromosomes of the mother.
It has all the chromosomes of the father.