La miopia es un caracter bastante comun en la especie humana. Un matrimonio en el que ambos conyugues poseen vision normal, tienen dos hijos, uni con una vision normal y el otro con miopia. Teniendi en cuenta el fenotipo de todos los miembros de la familia ¿quenpodrias deducir del gen que controla la miopia? ¿ que genotipo podrias asignsr a cada individuo?
Answer:
El gen que controla la miopia es dialelico, autosómicoEl alelo dominante M expresa visión normal, El alelo recesivo m expresa miopia, Los padres con visión normal serían heterocigotas, Mm.Tendrían un hijo con visión normal homocigota dominante MM o Heterocigota Mm Tendrían otro hijo homocigota recesivo con miopia, mm.Explanation:
Datos disponibles:
Ambos padres poseen visión normalUno de los hijos tiene visión normalEl otro hijo tiene miopiaPodríamos establecer que M es el alelo dominante, mientras que m es el alelo recesivo.
A partir de la información brindada, podríamos suponer que:
Opción 1:
La miopia es un caracter expresado por un gen dominante. Si este fuera el caso, entonces al menos uno de los padres debería tener miopia para poder heredarle al hijo el alelo dominante para expresar el caracter. Si este fuera el caso, los posibles genotipos de los padres serían:
Parental) Mm x mm (al menos uno de los padres con miopia)
F1) 1/2 Mm (Hijo miope)
1/2 mm (Hijo con visión normal)
Pero en este caso, los dos padres tienen visión normal, entonces si el gen dominante expresa la miopia, los genotipos de los padres serian homocigotas recesivos, mm. Si ambos padres son homocigotas recesivos, no podrían heredarle a ningun hijo el alelo de la miopia. En este caso, la cruza sería:
Parental) mm x mm
F1) 100% mm (todos los hijos con visión normal)
Sin embargo, para el ejemplo planteado, los dos padres tienen visión normal, uno de los hijos tiene visión normal y el otro tiene miopia, lo que nos conduce a la segunda opción.
Opción 2:
La miopia es un caracter heredado por un gen recesivo, m. Mientras que la visión normal es heredada por un gen dominante, M. Entonces, si este fuera el caso, para que ambos padres con visión normal, tengan un hijo homocigota recesivo para el caracter, entonces ambos padres deberian ser heterocigotos. Su hijo miope heredaría un alelo recesivo de cada padre y expresaría el defecto. El genotipo de las personas con miopía sería entonces homocigota recesivo. Esta cruza sería de la siguiente manera:
Parental) Mm x Mm (Ambos padres heterocigotas)
Gametos) M m M m
Cuadro de Punnet)
M m
M MM Mm
m Mm mm
F1) 3/4 o 75% de probabilidad de tener un hijo con visión normal
1/4 o 25% de probabilidades de tener un hijo miope.
Entonces, podemos concluir que:
El gen que controla la miopia es dialelico, autosómicoEl alelo dominante M expresa visión normal, El alelo recesivo m expresa miopia, Los padres con visión normal serían heterocigotas, Mm.Tendrían un hijo con visión normal homocigota dominante MM o Heterocigota Mm Tendrían otro hijo homocigota recesivo con miopia, mm.Compared to historical trends, what is different about
contemporary climate change?
A. It’s occurring faster
B. It’s a warning trend
C. It’s affecting plants and animals
D.it’s caused by atmospheric changes
Answer:
c
Explanation:
ACT GCA TTA- what is the complementary DNA strand?
Angiosperms are the most common plant that you see every day. Describe what characteristics make them so successful.
Answer:
1. they are the most complex green flowering plants
2. they are vascular plants
3. they have well developed and complete flower
4. they are mainly terrestrial plants
5. they are seed plants with seed enclosed in the fruit
Explanation:
hope this helps
How do scientists organize existing scientific information?
A. By classifying objects or events by their characteristics
B. By publishing research results in a journal
C. By starting a new research project
O D. By reading about other scientists' research
SUBMIT
Answer:
A
Explanation:
Answer:
A. By classifying objects or events by their characteristics
Explanation:
What two electron carrying particles ("batteries!") does the electron transport chain use to get the energy it needs to
make ATP?
Answer:
The electron transport chain can convert the energy from one glucose molecule's worth of FADH2 and NADH + H+ into as many as 34 ATP.
Explanation:
Answer:
The electron transport chain can convert the energy from one glucose molecule's worth of FADH2 and NADH + H+ into as many as 34 ATP
Explanation:
The process of forming ATP from the electron transport chain is known as oxidative phosphorylation. Electrons carried by NADH + H+ and FADH2 are transferred to oxygen via a series of electron carriers, and ATPs are formed. Three ATPs are formed from each NADH + H+, and two ATPs are formed for each FADH2 in eukaryotes.
Besides reducing biodiversity what are the characteristics of an ecosystem that might change if the conditions of the ecosystem change? Size Genetic Variation Density Distribution
Answer:
population
Explanation:
Predict the two possible outcomes if temperature or pH were changed within the molecular control system of cell division.
I'm pretty sure it's that the cells would divide more or divide less, right? Because the temp or pH change would cause some enzymes to denature, and then, depending on which ones denature, the regulation of cell division would be messed up and they would either divide too much or not enough?
Answer:
Yes, pH and temperature affects the cell division.
Explanation:
If the temperature falls between the range of 3 °C to 25 °C, the mitosis process increases but when the temperature lowers from 3 °C and exceeds from 25 °C so it decreases the rate of mitosis process because the enzymes which is responsible for the process of mitosis denatures and does not work properly. same is the case with pH, the rate of the process will increase when the pH is neutral but decreases when the pH goes lower or higher.
Claim: Which type of reproduction is more beneficial to a species
Asexual
Sexual
Answer: Asexual
Explanation: Since only one parent is needed, asexual reproduction is more beneficial. It is a "simpler" (in terms of not needing two mates to fornicate) and causes species to reproduce at a faster rate
Please help me with this work sheet
What is the estrus synchronization?
This picture shows a phospholipid bylayer. What crucial function do the nonpolar tails of the phospholipids have?
A) keep water-soluble substances from passing easily into the cell
B) help encode genetic material
C) allow water-soluble substances to pass easily into the cell
D) speed chemical reactions with enzymes
Answer:
It is B
Explanation:
I had this question on my test last week.
Choose all the answers that apply.
Oxygen is _____.
1 released into the air by the lungs
2 pumped to cells by ventricles
3 picked up in the alveoli
4 transported by blood
Answer:
its 2 3 4
Explanation:
where do convection currents occur.
A. in areas with the same temperature.
B. in areas with the same altitude.
C. in areas with different air pressures
D. in areas with different cloud types.
Answer:
the answer is C-in areas with different air pressures
Explanation:
Convection occurs when particles with a lot of heat energy in a liquid or gas move and take the place of particles with less heat energy. Heat energy is transferred from hot places to cooler places by convection. Liquids and gases expand when they are heated.
Answer:C. in areas with different air pressures
Explanation:
why are some planets harder to see than others planets in the solar system
Answer:
Because they are farther away
Explanation:
The stomach is a relatively small muscular organ compared to the small intestine that can be a long as six meters
What do these panels do?
Describe the events that occur during the cell cycle. Include what happens in each of the following stages: interphase, mitosis, cytokinesis.
Answer:
Cell cycle or cell division refers to the series of events that take place in a cell leading to its maturity and subsequent division. These events include duplication of its genome and synthesis of the cell organelles followed by division of the cytoplasm.
interphase-During interphase, the cell copies its DNA in preparation for mitosis. Interphase is the 'daily living' or metabolic phase of the cell, in which the cell obtains nutrients and metabolizes them, grows, reads its DNA, and conducts other "normal" cell functions. This phase was formerly called the resting phase.
mitosis-In cell biology, mitosis is a part of the cell cycle, in which, replicated chromosomes are separated into two new nuclei. Cell division gives rise to genetically identical cells in which the total number of chromosomes is maintained.
Cytokinesis-Cytokinesis is the division of the cytoplasm in eukaryotic cells that produces distinct daughter cells. Cytokinesis occurs at the end of the cell cycle following mitosis or meiosis. In animal cell division, cytokinesis occurs when a contractile ring of microfilaments forms a cleavage furrow that pinches the cell membrane in half.
Explanation:
hope it helps u
cholesterol is synthesized by all animal cells and is an essential structural component of animal cell's membrane cholesterol is the most common steroid and mainly synthesized in the liver cholesterol also serves as a processor for several important biological compounds including all except insulin ,vitamin D, bile salts , testosterone.
Answer:
Aug 11, 2017 — Vitamin D3 is produced in the skin from 7-dehydrocholesterol by UV irradiation, 1,25(OH)2D reduces 1,25(OH)2D levels in cells primarily by Animals null for calbindin 9k (the major calbindin in mammalian abnormal vitamin D and/or calcium metabolism in some but not all of these patients (24-26). Cholesterol, a waxy substance that is present in blood plasma and in all animal tissues. it is a primary component of the membrane that surrounds each cell, and it is synthesizes bile acids, steroid hormones, and vitamin D. Cholesterol are essential energy sources and structural components of all life
Can y'all help me? I am not good at science lol.
Earthquake
Epicenter
Fault
Deformation
Elastic Rebound
Focus
Please help me
Which particle, protons, neutrons, or electrons, has the LEAST mass?
Answer:
Electrons are much smaller in mass
Explanation:
Although similar in mass, protons are positively charged, while neutrons have no charge. Therefore, the number of neutrons in an atom contributes significantly to its mass, but not to its charge. Electrons are much smaller in mass than protons, weighing only 9.11 × 10−28 grams, or about 1/1800 of an atomic mass unit.
Producers, consumers, and decomposers all participate in the carbon cycle during
their lifetimes. Identify and explain the process through which producers remove
carbon from the atmosphere. Identify and explain how producers, consumers, and
decomposers return carbon to the atmosphere.
Answer:
Carbon Cycle
Everything You'll Have Covered
What role do producers, consumers, and decomposers play in the carbon cycle?
~ Producers synthesize their food through photosynthesis using energy from sunlight and carbon dioxide from the air. Their respiration returns carbon dioxide to the atmosphere. Consumers use the food produced by producers for energy. Their respiration also returns carbon dioxide to the atmosphere. Decomposers break down plant and animal waste products. They also break down dead plants and animals. The decomposing process releases carbon dioxide gas into the atmosphere.
How do fossil fuels and volcanic activities contribute to the carbon cycle?
~ When fossil fuels are burned, carbon dioxide is released into the atmosphere in the form of gas. When volcanoes erupt, carbon dioxide that was in the magma passes into the atmosphere as carbon dioxide gas.
How is carbon returned to the Earth and sea in the carbon cycle?
~ Carbon is returned to the Earth and sea in the form of precipitation after carbon dioxide mixes with rain and snow. Erosion is another way that carbon is returned to the sea. When shellfish die, the carbon that was in their shells collects at the bottom of the ocean and eventually forms sedimentary rocks.
Give one example of a human activity�that could disrupt the�carbon�cycle�as well as the consequences of this disruption.
~ Burning fossil fuels can disrupt the carbon cycle, since they increase carbon dioxide in the air, which can lead to environmental problems such as acid rain.
Photosynthesis is the process by which plants produce their food in the presence of sunlight that is solar energy with the use of carbon dioxide and water. The breakdown is the mechanism by which plants give their carbon dioxide back.
What is end product of photosynthesis ?The end products of photosynthesis are glucose and oxygen that is given back to the atmosphere.
In plants, photosynthesis is the process by which plants prepare their food in the presence of sunlight and glucose is made thus this is the way by which plants are preparing their food and in the case of plants glucose is stored in the form of starch.
With the reactions going on when the cellular respiration reactions are going on at that time the reactions produce enough of carbon dioxide which is given back to the atmosphere thus this dependency helps to interpret the mutual relationship.
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Large areas around the globe with similar climates and similar communities of organisms form
a
a population.
b
a biome.
c
an ecosystem.
d
a species.
Answer:
c
Explanation:
Answer:
a biome
Explanation:
a species is a type of animal kind, a population is the number of a certain species, an ecosystem is basically a big web of nature that is connected. so we can rule those 3 out. a biome is a part of land with similar climates and organism population
What's the connection between epigenome and nature vs nurture?
Answer:
The survival and proper functioning of an organism depends on a finely tuned interface between genome and environment, nature and nurture. The interface that regulates gene expression through environmental feedback is called the epigenome.
Explanation:
Predict: Based on your hypothesis, how will the mushroom population change when other organisms are added to the forest? (Trees,Bears,Deer)
Answer:
The mushroom population will decrease.
Explanation:
The animals introduced into the forest will likely eat the mushrooms.
Which letter marks the location where carbon dioxide is
produced during respiration?
OW
ОХ
Ο Υ
Ο Ζ
Letter X represents the Mitochondria which marks the location where carbon dioxide is produced during respiration. So, the correct option is B.
What is Mitochondria?A mitochondrion is defined as an organelle which is found in the cells of most eukaryotes, such as animals, plants, and fungi that have a double membrane structure. It uses aerobic respiration to generate adenosine triphosphate, which is used throughout the cell as a source of chemical energy.
The main role of mitochondria is oxidative phosphorylation which utilizes the energy released during the oxidation of the food we eat to generate ATP which is used as the primary energy source for most biochemical and physiological processes such as growth, movement and homeostasis.
So, the correct option is B.
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PLEASE HELP ME !
When did whale ancestors begin living full time in the water?
A) before they nursed under water
B) after they began eating a carnivorous diet
C) before they evolved gills
D) after they lost their hind legs
Answer:
40 million years ago
The earliest whales that we think were fully aquatic, that is, they never left the water, are found around 40 million years ago, during the middle Eocene. That means that the transition from terrestrial animals to fully aquatic animals took about 12 million years.
Explanation:
Answer:
After they nursed under water
Explanation:
Identify the functions of the labeled parts.
Answer:
A. Carries urine to bladder
B. Excretes urine out of body
C. Stores urine temporarliy
D.Produces urine
Explanation: Hope this helps!!
The identification of the functions of the labeled parts is as follows:
A. Carries urine to bladder
B. Excretes urine out of body
C. Stores urine temporarliy
D.Produces urine
In this way, the identification could be made
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Which of the numbered labels is pointing to an energy producing organelle in the diagram?
A. 2
B. 9 and 10
C. 3
D. 6
Answer: 3
Explanation:
because it’s the mitochondria
Answer:
The answer is c
Explanation:
the answer is c because the thing that is labeled three is the mitochondria
The image of a slide of onion epithelial tissue observed with the low-power objective of a
compound microscope appears light and somewhat fuzzy. Which parts of the microscope should be used to improve the focus?
coarse adjustment and ocular
fine adjustment and diaphragm
ocular and nosepiece
diaphragm and 40x objective
Od
Answer:
Fine adjustment and diaphragm
Explanation: