Conteste los siguientes enunciados, registrando (F) si es falso y (V) si es verdadero. 1. ( ) Una mujer portadora de hemofilia, transmite el alelo portador de la enfermedad al 100% de sus hijos. 2. ( ) Cuando un gen está ligado al cromosoma X con mecanismo de herencia recesivo, significa que el 100% de las mujeres pueden manifestar un fenotipo anormal. 3. ( ) Cuando un gen está ligado al cromosoma X con mecanismo de herencia dominante, significa que el 100% de los hijos varones de un hombre enfermo, pueden manifestar el fenotipo anormal. 4. ( ) En la herencia ligada al cromosoma Y, significa que el fenotipo anormal está presente en el 50% de las mujeres. 5. ( ) Dentro de las enfermedades ligadas al cromosoma Y se encuentra la hemofilia.
Answer:
1. Verdadero
2. Falso
3. Falso
4. Falso
5. Verdadero
Explanation:
Los seres humanos, como así también la mayoría de los mamíferos, poseen dos cromosomas sexuales: un cromosoma X y un cromosoma Y. Las hembras poseen 2 cromosomas X (un cromosoma X es heredado de la madre y el otro cromosoma X es heredado del padre); mientras que los hombres tienen un cromosoma X y un cromosoma Y (el cromosoma X es heredado de la madre, mientras que el cromosoma Y es heredado del padre). La hemofilia es una enfermedad recesiva monogénica ligada al cromosoma X, la cual está caracterizada por cuadros hemorrágicos causados por el déficit parcial y/o total de factores de coagulación. Los hombres expresan el fenotipo recesivo con mayor frecuencia que las mujeres para aquellos genes que se encuentran en el cromosoma X y poseen un mecanismo de herencia recesivo, esto debido a que los hombres sólo poseen una copia del alelo ligado al X (lo que hace que el alelo recesivo se exprese con mayor frecuencia en el fenotipo). De este modo, los hombres manifiestan hemofilia con mayor frecuencia que las mujeres porque en mujeres el gen recesivo necesita la presencia de dos copias del alelo defectuoso recesivo para que se exprese en el fenotipo hemofílico (es decir, las mujeres heterocigotas son portadoras de un alelo defectuoso pero no expresan la condición en el fenotipo), mientras que en los hombres la presencia de un sólo alelo defectuoso localizado en su único cromosoma X es suficiente para la expresión del fenotipo recesivo. En hombres, los genes ligados al cromosoma X son siempre heredados de la madre (los hombres heredan del padre el cromosoma Y). Finalmente, la herencia de caracteres ligados al cromosoma Y es muy rara porque los genes localizados en la región diferencial del cromosoma Y son escasos y estos genes solamente pueden ser trasmitidos de padres a hijos varones (ya que se encuentran en el cromosoma Y).
What sources must health care workers use when deciding which abbreviations and symbols to use on the job?
a. Those listed in their textbooks
b. Those approved by the facility in which they work
c. Those listed in medical dictionaries and reference books,
d. Those provided by their professional organization.
In snapdragon flowers, there is incomplete dominance. The allele for red flowers = r and the allele for white flower = w. The genotype rw results in pink flowers. What is the probability that a pink parent and a white parent will produce white offspring ?
1/4 or 25%
3/4 or 75%
1/2 or 50%
0%
Answer:
1/2 hoặc 50%
Explanation:
Bố mẹ màu hồng có kiểu gen Aa
Trắng có kiểu gen aa
→Đời con có tỉ lệ kiểu gen 1Aa:1aa hay 50%hoa hồng,50%hoa trắng
Help me please picture included
Answer:
umm I'm sorry but the picture is not coming like I mn its blank
1. An inherited characteristic that allows
anorganism to better survive is called
a(n)-
Answer:
adaption
Explanation:
. Q.. List any two advantages associated with water stored in the ground.
Answer:
It does not evaporate.
It recharges wells near the area.
It provides moisture to the vegetation.
It does not provide breeding grounds for mosquitos , like stagnant water in lakes and ponds.
It is relatively protected from contamination by animal and human waste.
Explanation:
I want to know the detailed notes for AQA GCSE Combined science biology.
Which is a part of interphase?
A. Prophase
B. Telophase
C. G, phase
D. Cytokinesis
Answer:
D is the answer.
Explanation:
Hope this helps
The sticky mass in some chemicals on heating was known as _______________________ fibre or fibre _________.
Answer:
Americans chemical society
A student states: "The molecules being transported in method A must be hydrophobic while the molecules being transported in method B must be hydrophilic". State whether you agree or disagree with this student. Justify your response
Answer:
I agree.
Explanation:
Yes, I agree with the statement of the student because the molecules that is transported in method A are insoluble in water so it must be transported in hydrophobic medium while on the other hand, the molecules in method B is soluble in water so it must be transported through hydrophilic. So due to different nature of molecules they are transported from different methods of transport.
Can someone please help me!
In the taxonomic system, genus is a subdivision of family.
True
Оr
False
Answer:
✔
Explanation:
genus (pl. genera)
in the modern classification system, a subdivision of a family; includes one or more species of organisms
Which of the following statements is MOST accurate?
a. Most people who engage in gambling activities become addicted to it
and end up taking bankruptcy because they cannot pay their bills.
b. People at lower income levels lower use a larger percentage of their
income to buy lottery and scratch tickets than people at higher levels of
income.
c. Gambling is a moral issue, with little or no economic or financial impact
on individuals or society.
d. Casinos only have a positive impact on communities because they create
jobs and generate wealth.
Answer:
C
Explanation:
what is Mycoplasam?(define it)
Explanation:
Mycoplasma: A large group of bacteria, with more than 100 types identified. Mycoplasma are very simple one-celled organisms without outer membranes. They penetrate and infect individual cells. Mycoplasma hominis and Mycoplasma pneumoniae are examples of mycoplasma bacteria that occur in humans.
(A) Mycoplasma pneumoniae cells (Gram stain). The signet-ring-shaped cell of Mycoplasma is gram-negative, and the size of the cell is 0.2–0.3 μm and is normally smaller than 1.0 μm. Cells have no cell wall.
What is the treatment for mycoplasma infection? Antibiotics such as erythromycin, clarithromycin or azithromycin are effective treatment. However, because mycoplasma infection usually resolves on its own, antibiotic treatment of mild symptoms is not always necessary.
Doxycycline is a tetracycline antibiotic that is used to treat susceptible bacterial infections of both gram-positive and gram-negative organisms, as well as infections caused by Mycoplasma, Chlamydophilia, and Rickettsia
Mycoplasma testing includes a group of tests that either measure antibodies in the blood produced in response to a mycoplasma infection or detect the microbe directly through culturing or by detecting its genetic material (DNA) in a body sample. It is most often used to detect Mycoplasma pneumoniae (M.28
People also ask
What is called Mycoplasma?
Definition. Mycoplasma refers to a genus of bacteria which lack a cell wall and it is currently considered the smallest known cell at about 0.1 micron (µm) in diameter. Infections in reptiles often cause upper respiratory tract signs.
What is Mycoplasma Class 9?
Mycoplasma is an organism which lacks a cell wall. It is included in kingdom Monera. It is anaerobic. It is pathogenic for many plants and animals.25-May-2016
Which disease is caused by mycoplasma?
Complete Answer: Mycoplasma is a genus of bacteria which causes diseases in humans, animals and plants. - Citrus greening is a disease of citrus plants and is caused by Mycoplasmas. The symptoms of this disease include - yellow shoots, twig dieback, fruits remain green even after ripening.।।।।।
People also ask
What is called Mycoplasma?
Definition. Mycoplasma refers to a genus of bacteria which lack a cell wall and it is currently considered the smallest known cell at about 0.1 micron (µm) in diameter. Infections in reptiles often cause upper respiratory tract signs.
https://www.sciencedirect.com › topics
Mycoplasma - an overview | ScienceDirect Topics
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What is Mycoplasma Class 9?
Mycoplasma is an organism which lacks a cell wall. It is included in kingdom Monera. It is anaerobic. It is pathogenic for many plants and animals.25-May-2016
https://www.topperlearning.com › w...
what is mycoplasma - Biology - TopperLearning.com | vhf6ky77
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Which disease is caused by mycoplasma?
Complete Answer: Mycoplasma is a genus of bacteria which causes diseases in humans, animals and plants. - Citrus greening is a disease of citrus plants and is caused by Mycoplasmas. The symptoms of this disease include - yellow shoots, twig dieback, fruits remain green even after ripening.
https://www.vedantu.com › question...
Which of the following diseases is caused by Mycoplasma class 11 ...
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What is Pplo in microbiology?
The full form of PPLO is pleuropneumonia-like organisms and the term used to describe mycoplasmas. PPLO is the smallest cell or organism with a size of between 0.1 and 0.3 mm. Mycoplasma has included species discovered from pleural fluid of cattle suffering from pleuropneumonia.
if the velocity of a vehicle starting from rest reaches 5m/2s in 2seconds, is the velocity of the vehicle uniform ?explain.
Explanation:
Avg speed × total times = total distance
20×25=500
Since acceleration in the 1st interval is same as deceleration in the 3rd interval and deceleration is from the same velocity achieved after acceleration, t
1
=t
3
s
1
=
2
1
×5t
1
2
s
2
=(5t
1
)t
2
s
3
=(5t
1
)×t
3
−
2
1
×5×t
1
2
=(5t
1
)×t
1
−
2
1
×5×t
1
2
s
1
+s
2
+s
3
=5t
1
t
2
+5t
1
2
⇒5t
1
2
+5t
1
t
2
=500−−−−1
2t
1
+t
2
=25−−−−2
Solving (1 ) and (2) ⇒t
1
=5,t
2
=15sec
2 women and 5 men can together finish an embroidery work in 4 days, while 3 women and 6 men can finish it in 3 days. find the time taken by 1 women alone to finish the work ,and also that taken by 1 man alone
Woman is hot!!!!!!!!!!!!!!!!!!?
What causes the planets in our solar system to move counter clockwise
The initial conditions in the cloud of gas and dust from which our solar system formed happened to be in a counter clockwise direction. That's why most objects in our solar system, including most planets, asteroids etc. move in a counter clockwise direction.
These penguins are all members of the species Aptenodytes patagonicus.
Answer:
Organisms of the same species can live in different areas, while organisms of the same population live in only one area.
Explanation:
Answer:
Option D
Explanation:
Populations are all in one area
What is a photosynthetic pigment
A. A man-made compound that reacts to light
B. An oxygen based compound that captures light energy.
C. A light sensitive compound that changes color.
D. A colored compound that captures light energy.
Answer:
Answer D is correct.
Explanation:
A colored compound that captures light energy.
This photosynthetic pigment means the pigment which is present in chloroplasts to absorb or capture the light energy to do photosynthesis.
Hope this helps you
In each of these groups of statements, only one is correct correct statement and write down its letter. A A Every living cell respires. B Only animal cells respire. DEC The way in which plant cells respire is called photosynthesis. b A Expired (breathed out) air is carbon dioxide. B Expired air contains more carbon dioxide than inspired (breathed in) air. C Expired air contains more oxygen than inspired air. C A Respiration means moving your muscles to draw air into the lungs. B Respiration means the diffusion of gases between the air sacs and the blood. C Respiration means the release of energy from glucose, inside cells.
Answer:
The answer above is correct UwU
Explanation:
The process of cell division in Eukaryotes is called
A. Meiosis
B. Binary Division
C. Mitosis
D. Binary Fission
Answer:
A. Meiosis
Explanation:
if a rock has bands of light and dark layers it is
Which of the following are reactants of photosynthesis?
6CO2 + 6H2O + Energy
C6H12O6 + 602
CO2 + H2O + Energy
C6H12O6 + O2
The reactants of photosynthesis are as follows: 6CO2 + 6H2O + Energy.
PHOTOSYNTHESIS:
Photosynthesis is the process by which green plants obtain their food (glucose) using energy from sunlight. Photosynthesis occurs in the chloroplast organelle of plants. It involves a series of biochemical processes but can be summarized into the equation as follows:6CO2 + 6H2O + Energy = C6H12O6 + 6O2. From the equation above, 6 moles of carbon dioxide and water and energy are reactants of the photosynthetic process.Learn more at: https://brainly.com/question/1388366?referrer=searchResults
Answer: A. 6CO2 + 6H2O + Energy
Proof of validity is shown below.
Why is solving the pollution problem hard and expensive and difficult?
Answer:
Reduce the number of trips you take in your car. Reduce or eliminate fireplace and wood stove use. Avoid burning leaves, trash, and other materials. Avoid using gas-powered lawn and garden equipment.
The group members met on Saturday working on the project together.
Which revision corrects the error in the sentence?
The group members who were working on the project together met on Saturday.
Working on the project together on Saturday, the group members met.
On Saturday, the group members who were working on the project met together.
The group members met working on the project together on Saturday.
Answer:
Working on the project together on Saturday, the group members met
Answer:
The answer is B.
Explanation:
The diagram below shows a light ray striking Medium A and Medium B at the same angle. (4 points)
A rectangle labeled Medium A is drawn on the left. A ray of light travels through air and strikes the surface of medium A making an angle of 50 degrees with the vertical. The light ray bends towards the vertical as it travels through Medium A and makes an angle of about 15 degrees with the vertical. A rectangle labeled Medium B is drawn on the right. A ray of light travels through air and strikes the surface of medium B making an angle of 50 degrees with the vertical. The light ray bends towards the vertical as it travels through Medium B and makes an angle of about 25 degrees with the vertical.
Which statement is correct?
The speed of the light ray is the same in air and Medium A.
The speed of the light ray is the same in air and Medium B.
Medium A and Medium B have different densities because light refracts at different angles.
Medium A and Medium B have the same density because the light ray strikes both at the same angle.
Answer:
A the speed of the light ray is the same in air and medium
A tube with a membrane covering the bottom is placed in a beaker. The membrane allows water to flow through but not salt or glucose. The tube contains an aqueous solution with 4% salt and 20% glucose and the beaker contains an aqueous solution with 12% salt and 6% glucose. How could you describe the solution in the beaker compared to the solution in the tube
Answer:
The solution in the tube is hypertonic to the solution in the beaker.
Explanation:
To compare the solutions, find the total amount of solutes in both the tube and beaker.
The tube has 4% salt and 20% glucose, so it has 24% solute.
The beaker has 12% salt and 6% glucose, so it has 18% solute.
Since 24 is larger than 18, this means the tube has more solute.
Since the tube has more solute and less water compared to the beaker, it is hypertonic to the beaker.
So, the answer is that the solution in the tube is hypertonic to the solution in the beaker.
Solutions are hypertonic or hypotonic to other solutions according to their solute concentration grade. In the exposed example, the beaker aqueous solution is hypotonic to the tube solution, meaning it is less concentrated.
--------------------
Available data:
The membrane allows water to flow through but not salt or glucoseThe tube contains an aqueous solution with 4% salt and 20% glucoseThe beaker contains an aqueous solution with 12% salt and 6% glucoseWe need to describe and compare solutions.
To do it, first, we will review some theoretical framework.
When talking about solutions in compartison with the cell content, we can classify them as follows,
• HYPERTONIC ⇒ A hypertonic solution has a higher concentration of solute than the cell. This means that in the cell interior, the solute concentration is lower than in the solution itself.
• ISOTONIC ⇒ The solute concentration is the same inside the cell and outside.
• HYPOTONIC ⇒ A hypotonic solution has a lower concentration of solute than the cell. This means that in the cell interior, the solute concentration is higher than in the solution itself.
When a cell is in a hypotonic solution, through osmosis, water moves toward the cell.
Osmosis is the phenomenon that occurs when two dilutions of different concentrations -in this example, the interior of the tube and the beaker- are separated by a semipermeable membrane.
The membrane allows the pass of water but not solute. Hence, water can move from the most diluted side to the less diluted one.
What we need to consider is
• When a cell with semipermeable membrane is placed in a hypotonic solution, water enters the cell.
• When a cell with semipermeable membrane is placed in an isotonic solution, there is no water movement.
• When a cell with semipermeable membrane is placed in a hypertonic solution, water gets out of the cell.
In simple words, in the proposed experiment, glucose and salt -solutes- can not cross the membrane, but water can. The tube represents a cell. So,
The tube has 4% salt and the beaker 12 % saltThe tube has 20% glucose and the beaker 6% glucose.To make the analysis easier, we can add the concentration percentages of glucose and salt at each side of the membrane, and then compare them.
The tube contains an aqueous solution with 24% solute (4% salt + 20% glucose)The beacker contains an aqueous solution with 18% solute (12% salt + 6% glucose)We can see that the concentration of solute is higher in the interior of the tube than in the beaker. This difference suggests that water will move forward to the tube interior.
According to this analysis, we can say that
The tube aqueous solution is hypertonic to the beaker solution → More concentratedThe beaker aqueous solution is hypotonic to the tube solution → Less concentrated---------------------------------------------
You can learn more about hypertonic and hypotonic solutions at
https://brainly.com/question/13210811?referrer=searchResults
https://brainly.com/question/18806725?referrer=searchResults
What fear(s) or phobia(s) do you have? How intensely and how frequently are you affected by these fears or phobias, and how do you deal with them? What category in the DSM-5 do phobia's fall in?
Explanation:
secret service to reduce
In humans, brown eyes are dominant to blue eyes. If a blue-eyed man has children with a brown-eyed woman whose mother has blue eyes, what percentage of the brown-eyed offspring do you expect will be heterozygous
Answer:
50%
Explanation:
This question involves a gene coding for eye color in humans. The allele for brown eyes (B) are dominant to blue eyes (b). This means that blue-eyed individual will possess genotype: bb.
According to this question, a blue-eyed man (bb) has children with a brown-eyed woman (B_) whose mother has blue eyes (bb). Since the mother of the brown-eyed woman has a blue eye, this means that the woman will be heterozygous for brown eye (Bb).
Hence, the parents in this question will cross as follows: blue eyed man (bb) × brown-eyed woman (Bb). The offspring/children will have the following genotypes (see attached punnet square); Bb, Bb, bb, bb.
Based on the question, 2/4 = 1/2 of the children will be heterozygous for the eye color trait. That is, ½ × 100 = 50%.
what do you mean by photo synthesis
Answer:
Photosynthesis is the process in which plant make food in the presence of water sunlight minerals and carbon dioxide
Answer: Photosynthesis is the process by which plants use sunlight, water, and carbon dioxide to create oxygen and energy in the form of sugar.
