If the e and f genes are expressed, the Xi chromosome will be prevented from reaching 100% frequency if selection pressures cause which of the following to be true?
XsXs flies have the lowest fitness of any genotype.
XsXs flies have the highest fitness of any genotype.
XiY flies and XsY flies have equal fitness.
XiXs flies and XsXs flies have equal fitness.
Answers
If the e and f genes are expressed, the Xi chromosome will be prevented from reaching 100% frequency if XsXs flies have the **highest fitness** of any genotype.
The expression of the e and f genes on the X chromosome is responsible for the phenomenon of meiotic drive, where one allele is preferentially transmitted to the next generation at the expense of the alternative allele. If XsXs flies have the highest fitness of any genotype, then they will be selected for and will produce more offspring, which will counteract the drive of the Xi chromosome. This will prevent the Xi chromosome from reaching 100% frequency in the population. The fitness of other genotypes, such as XiY and XsY or XiXs and XsXs, will not have an effect on the prevention of the Xi chromosome from reaching fixation.
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Related Questions
how does photosynthesis benefit organisms that are not plants?
Answers
the electron transport chain is very similar in function for both photosynthesis and cellular respiration, with a few differences in what donates electrons and what is the final electron acceptor. in photosynthesis water is the electron donor, which then produces carbon dioxide in respiration carbon dioxide is the electron donor, which the produces oxygen in photosynthesis nadp is the electron acceptor, which produces nadph in respiration oxygen is the electron acceptor, which produces
Answers
The electron transport chain, commonly referred to as the oxidative phosphorylation process, is made up of four protein complexes that work together to combine redox events to create an electrochemical gradient that leads to the synthesis of ATP.
In mitochondria, both cellular respiration and photosynthesis take occur. When organic molecules break down in the former, electron transport chain (ETC), energy and electrons are also released. In the latter, the electrons join the chain after being triggered by light, and the energy released is used to produce carbohydrates. A sequence of proteins that the electrons in the electron transport chain (ETC) move through raises its reduction potential, causing an energy release. Pumping hydrogen ions (H+) creates a proton gradient, which increases the acidity in the intermembrane gap by creating an electrical difference with a positive charge outside and a negative charge within.
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Can someone please answer this because I have no clue and I’ve been waiting two hours for an answer
Answers
Answer: Because there are multiple of each elements provided also known as a chain or "continuation"
Explanation:
H-9
O-2
C-3
N-4
If it is shown as a ring, the ring will be composed of one oxygen atom, all the rest being carbons. All the carbon atoms will have OH groups except one of the carbon atoms attached to the ring oxygen. That same carbon atom may have a continuation of the carbon chain attached (e.g., a CH2OH group or a CH(OH)CH2OH group).
which stains are used to visualize structures in the bacterial cell wall
Answers
Answer: Acid-fast and Gram
Explanation:
The gram stains peptidoglycan and the acid-fast stain stains mycolic acid, which are both in the cell wall.
whats the order from biggest to smallest ecosystem,population,community,organism
Answers
Answer:
Ecosystem, community, population, Organism
Explanation:
Organism is a single species
Population is a group of the same species
Community is a group of different populations
Ecosystem is where communities live
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Which method would be BEST to use to monitor protein secondary structure during the titration of a denaturing agent
Answers
The best method to use to monitor protein secondary structure during the titration of a denaturing agent is Circular Dichroism (CD) spectroscopy.
Circular Dichroism spectroscopy is a technique that measures the difference in absorption of left and right circularly polarized light by chiral molecules, such as proteins.
This technique is sensitive to changes in the secondary structure of proteins, making it a suitable choice for monitoring protein folding and unfolding during the titration of a denaturing agent.
As the denaturing agent is titrated, changes in the CD signal can be observed, which indicate changes in the protein's secondary structure.
To effectively monitor protein secondary structure during the titration of a denaturing agent, Circular Dichroism spectroscopy is the most suitable method due to its sensitivity to changes in protein conformation and ability to provide real-time information on structural alterations.
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middle which diagram shows the changes in appearance of a plant cell when a remains in a concentrated sugar solution for thirty minutes? what is th answer
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The osmosis diagram is the one that most accurately represents how a plant cell might change in appearance after spending thirty minutes in a concentrated sugar solution.
Osmosis is the process by which water molecules move from an area with a lower concentration of solutes to an area with a higher concentration of solutes across a semi-permeable membrane.
If a concentrated sugar solution were present, the solute concentration outside the plant cell would be higher than that inside.
Water from inside the plant cell would naturally try to exit the cell as it is submerged in the concentrated sugar solution in an effort to balance the solute concentration on either side of the cell membrane.
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To keep and protect something from damage, change, or waste
Answers
Answer: conserve / conservation
Meaning of conserve is to keep and protect something from damage, change, or waste:
Answer:
To keep and protect something from damage, change, or waste
Explanation:
conserve
These plants have free-living gametophytes and free-living sporophytes. The sporophyte generation is dominant and larger than the gametophyte generation. There is one type of spore, and the gametophyte generation grows outside of the spore wall. Which plant or plants am I describing? (SELECT ALL THAT APPLY) 000000000 Ferns Cycads Selaginella Lycopodium Conifers Ginkgo Hornworts Mosses Angiosperms 3 pts Liverworts
Answers
The correct answers are: Ferns, Hornworts, Mosses, and Liverworts.
The plants that fit the given description are:
Ferns: Ferns have free-living gametophytes and free-living sporophytes. The sporophyte generation is dominant and larger than the gametophyte generation. Ferns produce one type of spore, and the gametophyte generation grows outside of the spore wall.Horworts: Hornworts also have free-living gametophytes and free-living sporophytes. The sporophyte generation is dominant and larger than the gametophyte generation. Hornworts produce one type of spore, and the gametophyte generation grows outside of the spore wall.Mosses: Mosses have free-living gametophytes and free-living sporophytes. The sporophyte generation is dominant and larger than the gametophyte generation. Mosses produce one type of spore, and the gametophyte generation grows outside of the spore wall.Liverworts: Liverworts also have free-living gametophytes and free-living sporophytes. The sporophyte generation is dominant and larger than the gametophyte generation. Liverworts produce one type of spore, and the gametophyte generation grows outside of the spore wall.Therefore, the correct answers are: Ferns, Hornworts, Mosses, and Liverworts.
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A group of biology students tests the growth of bacteria under different conditions. The students apply the same amount of bacteria to identical Petri dishes enriched with nutrients, then place each plate at a different temperature. The bacteria are allowed to grow for three days, after which the number of bacterial colonies on each plate is counted. What is the dependent variable in this experiment?
A.
the time of day that the experiment is performed
B.
the temperature at which the colonies grew
C.
the nutrient type present in the Petri dishes
D.
the number of bacterial colonies after three days
Answers
Answer:
D
Explanation:
The dependent variable is dependent on the independent variable. The dependent variable is thus the result of the experiment.
why cell is called the basic unit of life
Answers
The cell is the smallest unit of life.
Which were once eaten as a means of treating tooth aches: A) worms, B) spiders, or C) cockroaches?
Answers
Answer: hi I 4 my broter wa in thi ap
Explanation:
Answer:
I believe it is C
Explanation:
I hope this helps!
It is believed that neutral mutations (mutations that have neither a positive or negative effect) accumulate at a exponential rate over time.
True
False
Answers
The statement 'neutral mutations (mutations that have neither a positive or negative effect) accumulate at an exponential rate over time' is False.
What is a mutation?A mutation is any alteration in the nucleotide (DNA) sequence of an organism's genome.
Mutations can be neutral, beneficial, or deleterious depending on the environment in which an organism lives.
In conclusion, the statement 'neutral mutations (mutations that have neither a positive or negative effect) accumulate at an exponential rate over time' is False.
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Water molecules are sufficiently small that they do not require specific transporters to cross biological membranes. But because they are polar, diffusion of these molecules across the phospholipid bilayer is slow. Peter Agre won the 2003 Nobel Prize in Chemistry for his discovery that the rapid movement of water into and out of cells occurs via:________.
Answers
Why is phosphorus important to living things?
Answers
What soil horizon is the most important for the growth of plants (agriculture) ?
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Write a paragraph discussing the negative aspects of genetic engineering.
Answers
Answer:
Genetic engineering is when scientist rearrange the DNA of a living thing to change the outcome of it's life. Genetic engineering has several bad aspects. One of the changing the DNA of a living thing may cause harmful birth defects to the organism. The living thing can also escape or accidental repopulate with a organism that live out in the wild causing animals in the wild to be born with altered DNA, changing the state of an entire population of a specific species. The most important though is that it causes unnecessary harm to living things and changes their lifestyle, when it was the way that nature intended them to be.
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What does water vapor rising include?
Answers
Water vapor rising refers to the process by which water molecules in the air become more energetic and move more freely, causing them to rise higher in the atmosphere. This can occur as a result of several different factors, including:
1. Temperature: Water vapor will tend to rise in the atmosphere if it is warmer than the surrounding air. As the water molecules absorb heat energy, they become more energetic and are able to move more freely, causing them to rise.
2. Humidity: Water vapor will also tend to rise in the atmosphere if the air is already saturated with moisture. When the air becomes saturated, any additional water vapor that is added to it will be less likely to stay in the air and will instead tend to condense and fall to the ground.
3. Pressure: Water vapor will also tend to rise in the atmosphere if the air pressure is lower at higher altitudes. As the water molecules rise and the air pressure decreases, they become more energetic and are able to move more freely, causing them to rise further.
Overall, water vapor rising is an important process in the Earth's atmosphere that helps to distribute heat and moisture around the planet and to regulate the Earth's climate.
Which type of cell DOES have membrane-bound organelles?
A. eukaryotic
B. prokaryotic
Answers
Identify the characteristic of the transverse wave that halved from wave A (black) to wave B (green). A) amplitude B) crest C) trough D) wavelength
Answers
ATP is chemical energy that all cells use. TRUE OR FALSE
Answers
Answer:
True.
Explanation:
True, ATP is chemical energy that all cells use.
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Answer: True
Explanation:
ATP is a source of energy for cells
Which of the following provides molecular evidence that signal transduction pathways evolved early in the history of life?
Answers
Answer:
Which of the following provides molecular evidence that signal transduction pathways evolved early in the history of life? The molecular details of cell signaling are quite similar in organisms whose last common ancestor was a billion years ago.
Which of the following describes an action taken during a winter birth that would not be needed during a summer birth?
supply additional heat source
suction mucus out of newborn’s mouth
monitor mother and newborn
rub mother’s milk on newborn lips
(for animal science)
Answers
Answer:
supply additional heat source
What occurs in stage 2 of cell division?
A. Cells grow and divide into four cells
OB. Cells grow and then divide.
OC. Cells divide to make six cells.
D. Cells recombine.
Reset Selection
Answers
Answer:
Mitotis is the second stage in cell division. During this stage the cell makes two identical nuclei, and the chromosomes seperate
Explanation:
b
C6H12O6 + 602 --> 6CO2 + 6H20 + ATP
In the reaction above, CoH12O6 and 602 are called the
Answers
Answer:
Reactants
Explanation:
In the reaction:
C₆H₁₂O₆ + 6O₂ → 6CO₂ + 6H₂O + ATP
The reaction is a metabolic reaction that produces energy from the breakdown of glucose when it reacts with oxygen.
In the reaction C₆H₁₂O₆ and O₂ are the reactants.
These are the raw materials need for the reaction to proceed in the right direction successfully.
On the right hand side, we have the products.
what part of the brain coordinates reflexes between body and brain
Answers
Answer:
The brainstem
Explanation:
The brainstem also controls your balance, coordination and reflexes.
HOPE THIS HELPS YOUPLS RATE AS BRAINLIEST ANSWERWhich of the following must the inter-membrane region of an integral protein contain?
A. Polar amino acids
B. Nonpolar amino acids
C. Small amino acids
D. Large amino acids
Answers
Answer:
C. Small Amino Acids
Explanation:
The following must the inter-membrane region of an integral protein contain Nonpolar amino acids. The correct option is B.
The inter-membrane region of an integral protein in a cell membrane is often embedded within the hydrophobic lipid bilayer. Since the cell membrane is primarily composed of lipids that are hydrophobic (repel water), the inter-membrane region of integral proteins needs to have nonpolar amino acids.
Nonpolar amino acids are hydrophobic and are better suited for interacting with the lipid environment of the membrane. This helps stabilize the protein's position within the lipid bilayer and allows it to span the membrane while minimizing interactions with water molecules.
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why did all of the f1 offspring of mendel's purple and white flowered pea cross always look like one of the two parental varieties? select one: a. no genes interacted to produce a new unique phenotype. b. each allele affected phenotypic expression. c. the traits blended together during fertilization. d. one allele was dominant.
Answers
One phenotype was completely dominant over another
What describes a country with less industry and whose citizens have low average incomes.
Answers
third world countries
Explanation:
are the results of countries with low exports and high imports
Developing works because the low income and socio-economic status comes from them not being stable overall a weak infrastructure unlike second and first world countries, it’ll be a while before they catch up.
Help with this ASP please
Answers
Answer:
Covalent bonds formed by shared electrons between atoms.
Explanation: