En el hombre el color negro de los ojos “A” domina sobre el color azul “a” Una pareja en la que el hombre tiene los ojos negros y la mujer ojos azules tienen dos hijos, uno de ellos de ojos negros y el otro de ojos azules. Averiguar:
a) El genotipo del padre.
b) Realizar el cruzamiento.
c) Porcentaje genotípico de los hijos.
El enunciado hace referencia a un caso de herencia monogénica y dominancia completa para el rasgo 'color de ojos', donde el padre es heterocigota y la madre es homo-cigota recesivo.
Las respuestas a estas preguntas son:
a) Genotipo del padre: Aa (ojos negros)
b) Cruzamiento: Aa (padre) x aa (madre)
c) Frecuencias genotípicas esperadas: 1/2 Aa; 1/2 aa
En genética, dominancia completa se refiere al proceso de herencia en la cual un individuo heterocigota, es decir, el individuo que presenta dos alelos diferentes para el mismo gen, presenta el mismo fenotipo que un individuo homo-cigota para el alelo dominante (el alelo dominante es aquel que enmascara la expresión del alelo recesivo en individuos heterocigotas).
En este caso, el carácter 'color de ojos' presenta un patrón de herencia monogénica, donde el alelo 'A' dominante codifica para el rasgo fenotípico ojos negros, mientras que el alelo 'a' recesivo codifica para el rasgo fenotípico ojos azules.
En el ejemplo, la pareja tuvo progenie en la cual uno de los hijos presenta el rasgo recesivo ojos claros, y por lo tanto el padre debe ser heterocigota y poseer un alelo recesivo 'a'; mientras que la madre expresa el fenotipo recesivo y por lo tanto su genotipo es 'aa'. En consecuencia, el cruzamiento de un padre heterozigota 'Aa' con una madre homo-cigota recesivo 'aa' producirá una descendencia con una frecuencia genotípica esperada de 1/2 (50%) de hijos con ojos 'color negro' de genotipo Aa y 1/2 (50%) de hijos con ojos 'color celelste' de genotipo aa >>
Cruzamiento: Aa (padre) x aa (madre)
Gametos padre: 1/2 A; 1/2 a
Gametos madre: 100% a
Cuadro de Punett (combinaciones gaméticas):
A a
a Aa aa
a Aa aa
En consecuencia, este cruzamiento producirá 50% individuos ojos color negro (genotipo Aa) y 50% individuos con ojos color celelste (genotipo aa)
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1. What academic subset of oceanography studies seafloor features and the processes that form them?
O A. Biological oceanography
O B. Marine geology
O C. Physical oceanography
O D. Chemical oceanography
pls help I will mark brainlest
Answer:
Renewable resources can be replaced by natural processes as quickly as humans use them. Examples include sunlight and wind. Nonrenewable resources exist in fixed amounts. They can be used up.
I Hope this will help you if not so advance sorry :)
Which of the following is a start codon?
A.UAG
B.AUG
C.UAA
D.UGA
Answer:
AUG
Explanation:
you can use a codon chart to help or double check.
B) you can use a software to check
Which level of organization is characterized by a group of cells that work together to perform a common function?
organ
tissue
organ system
organism
Answer:
B
Explanation:
Answer:B
Explanation:
Describe the process of germination and plant growth you observed in the lab activity for a monocot plant.
Answer:
Germination is the process by which a plant develops from a seed. The most common example of germination is a sprout of a seedling emerging from the seed of an angiosperm or gymnosperm. However, the development of a daughter spore from a spore, such as the growth of a mycelium from a fungal spore, is also germination. Therefore, germination can be understood in the general sense as anything that becomes larger from a small entity or a living organism, is a commonly used method in many seed development projects. alike.
Explanation:
A poison placed on the tips of darts by natives of the Amazon rainforest paralyzes prey such as small mammals. Which of the prey's cells are most likely affected by the poison?
muscle cells
epithelial cells
red blood cells
white blood cells
Answer:
Muscle cells
Explanation:
If they are paralyzed it stops use of the muscles. like... just read it bro
The cells in the prey that are most likely influenced by the poison present in the darts exist the muscle cells.
What are muscle cells?A muscle cell exists also known as a myocyte when directed to either a cardiac muscle cell or a smooth muscle cell as these exist both small cells. A skeletal muscle cell exists long and threadlike with many nuclei and is named a muscle fiber. Muscle cells originate from embryonic precursor cells named myoblasts.
The muscle cells exist as a specialized kind of cell (one of the four tissues) that can contract to exert action.
These cells (muscle cells) can be paralyzed by utilizing various inhibitors of movement such as poisons.
In conclusion, the cells in the prey that exist most likely affected by the poison present in the darts exist the muscle cells.
The cells in the prey that exist most likely influenced by the poison present in the darts exist the muscle cells.
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genesis high grade heat and pressure is steps in what
Answer:
Metamorphic rock.
Explanation:
This is the answer I hope this help you out. Enjoy your day!
why is the nucleus important to the cell
Answer:
Because it controls all the activities in the cell
The nucleus is considered to be one of the most important structures of eukaryotic cells as it serves the function of information storage, retrieval and duplication of genetic information. It is a double membrane-bound organelle that harbours the genetic material in the form of chromatin.
plz mark brainliest
why should we drink 6 to 8 glasses of water everyday even water does not provide any energy? pls answer in short
Answer:
√7-2√10x/√6-√2/1-√3-5/√5
Động vật nào sau đây máu đu nuôi cơ thể không pha trộn giữa máu giàu o2 và máu giàu co2
Answer: Tôi không thể giúp anh vì anh chưa bao giờ đặt tên cho bất kỳ con vật nào
Câu 6: Gà có 2n =78. Vào kỳ trung gian, sau khi xảy ra tự nhân đôi, số nhiễm sắc thể trong mỗi tế bào là:
A. 78 NST đơn. B. 78 NST kép. C. 156 NST đơn. D. 156 NST kép.
Câu 7: Ở người (2n = 46), số NST trong 1 tế bào tại kì giữa của nguyên phân là:
A. 23 NST đơn. B. 46 NST kép. C. 46 NST đơn. D. 23 NST kép.
Câu 8: Ở ruồi giấm, có bộ NST 2n = 8 vào kỳ sau của nguyên phân trong một tế bào có:
A. 8 NST đơn. B. 16 NST đơn. C. 8 NST kép. D. 16 NST kép.
Answer: 6A 7D 8B
Explanation:
The active site of an enzyme is _____________. Group of answer choices the region of an enzyme that attaches to the product the region of a product that detaches from the enzyme the region of a substrate that is changed by an enzyme the region of an enzyme that attaches to a substrate the highly changeable portion of an enzyme that adapts to fit the substrates of various reactions
Answer: The correct option is (the region of an enzyme that attaches to a substrate).
Explanation:
The anabolic and catabolic processes in a cell are directed and regulated by enzymes. An enzyme has the ability to speed up a metabolic reaction by lowering the amount of energy needed to start the reaction. Without enzymes, these processes would be extremely slow. They also arrange the reacting molecules in a manner that will cause the chemical change to take place rapidly. It does so through the following steps:
--> molecules of substrate combine with the enzyme at its active site.
--> the substrate molecules combine with enzyme molecules for a short time, forming an enzyme-substrate complex.
--> New substance ( product) is formed which leaves the active site of the enzyme thereby making it free for another reaction to take place.
In conclusion, the ACTIVE SITE of an enzyme is the region of an enzyme that attaches to a substrate allowing chemical reaction to take place.
Biological method involves all the following except
(a) data collection (b) observation (c) proportion (d) experiment
My pet mouse had babies and then it ran away and i dont know what to do
sler Test
Select the correct location on the image.
Identify the position on the graph that gives the carrying capacity of the population.
population
y 1
2,000
1,500
Population Size
1,000
500
0
6
24
12 18
Time (months)
Reset
Next
First, there is a need to understand what the carrying capacity is as it relates to the environment:
Carrying capacity refers to the maximum number of individuals of a particular species that and environment can support based on the resources it has. The population of a species in an environment grows and oscillates around the carrying capacity of the environment.Now let us look at the graph. The population size grew from 0 and then leveled off at 2,000 with time. The leveling-off also happened without any oscillation, meaning that the maximum population size the environment can support is 2,000.
Hence, the portion on the graph that indicates the carrying capacity would be the plot where the population size is 2,000 and the time being between 12 and 18. This has been circled and labeled as 'K' in the attached image.
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Answer:
2,000
Explanation:
Right on Plato ;)
How many phenotypes are possible from the 3 alleles coding for human blood? A 3 B. 4 C. 5 D. 6
There are 4 phenotypes are possible from the 3 alleles coding for human blood. The correct option is B.
What is phenotype?The set of qualities or characteristics that can be observed in an organism are known as its phenotype in genetics.
The word includes an organism's anatomy, developmental processes, physiological and biochemical characteristics, behaviour, and the outcomes of behaviour.
The genotype of an individual is their own DNA pattern. More specifically, the two alleles a person acquired for a particular gene are referred to by this phrase.
The clinical presentation of a patient is the observable expression of this genotype, or phenotype.
A, B, AB, and O are the four phenotypes of blood that can occur. The gene that determines blood type has three alleles. Six distinct genotypes are possible because there are three different alleles.
Thus, the correct option is B.
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The nucleus in a body cell of a fly contains 12 chromosomes.
How many chromosomes are there in the nucleus of a sperm from this fly?
a) 3 b) 6 c) 12 d) 24
Answer:
it contains 6, the number of chromosomes in the gamete is half the number of chromosomes in the nucleus of the body cell.
I hope this helps
help is needed please!!
Answer:
| and ||
Explanation:
I haven't heard of heavy metal exposure causing nervous system damage, but I have heard that when you inhale during mining, you are inhaling all different particles and dust which causes other respiratory diseases, such as chronic obstructive pulmonary disease. Noise pollution is definitely true as people have lost their hearing from all the noise underground which also caused headaches. This is my opinion, sorry that I'm late!
PLSSS HELPP- Study the qualities below. Which unit of measure is being described? • used to measure length • smaller than a meter O centimeter 0 kilometer 0 hectometer O dekameter
Answer:
centimeter
Explanation:
Description:
used to measure lengthsmaller than a meterAll answer choices are units that are used to measure length so the first hint isn't much help.
The only unit listed that is smaller than a meter is a centimeter so the answer would be centimeter.
1 Centimeter = 0.01 Meter
( If it helps to remember centi means one hundredth, so centimeter means one hundredth of a meter )
centimeter is the lowest standard unit of measure the length.
What Is standard unit of measurement of length?The product of speed and time can be represented as distance.
d=s×t, where d is the distance m, t is the time taken to cover s
s is the speed in m.s-1
Different units can be used to measure Length like centimeters, inches, meters, it can be classified into two types such as Standard units of measuring length and non-standard units of measuring length.
Standard Units of Measuring Length include the pre-defined such as If two measure the length of the same object using any standard unit will get the same result.
standard units of length are measured in the form of meters, centimeters, inches, feet. It can be up two types such as Imperial units and metric system units.
Imperial System is based on existing units, examples are nautical mile, mile, rod, inch etc.
Metric units are kilometer, hectometer, decameter, meter, centimeter, and millimeter etc.
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Which of the following statements about biomolecules is true?
I. Biomolecules are the basis of life.
II. Biomolecules are involved in the metabolic processes of all living organisms.
III. Biomolecules are inorganic molecules.
In garden peas, the allele for tall plants is dominant over the allele for short plants. Imagine that a true-breeding tall plant is crossed with a short plant. Then one of their offspring is test crossed. Out of 20 offspring resulting from the test cross, about how many should be tall
Answer:
10
Explanation:
The allele for tall plants is dominant over the allele for short plants. A true-breeding tall plant is crossed with a short plant, and one of their offspring is test crossed. Out of 20 offspring resulting from the test cross, about 10 and should be tall.
PEASE HELP. What are the two main sources of energy on earth? Explain some things that each source creates/powers/ does for earth.
Answer:
solar and nuclear energy
What is the difference between sediments deposited in outwash and sediments deposited in moraines?
1. Sediments in the outwash are larger.
2. Sediments in the outwash are sorted
3. Sediments in the outwash are more angular
4. Sediments in the outwash are older.
Answer:
2. Sediments in the outwash are sorted
The difference between sediments deposited in outwash and sediments deposited in moraines is that-Sediments in the outwash are sorted. Therefore, the correct option is 2.
What is the sediment of outwash and moraines?Outwash is the sediment that is carried away from a glacier by meltwater and deposited in streams and rivers. This sediment is typically well-sorted, which means that particles are relatively uniform in size, shape, and composition.
Moraines are piles of unsorted sediment that are left behind by a glacier as it retreats. This sediment is typically a mix of different particle sizes, shapes, and compositions.
The glacier's movement is not strong enough to sort the sediment of moraines, so it remains unsorted. Therefore, the correct option is 2.
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how do you think the weight and the lift should not be of the same magnitude
Answer:
There is because one is short and one is long
An atom with 17 protons 17 neutrons and 17 electrons has a net charge of what
Answer:
0
Explanation:
Since we have the same amount of protons and electrons, our net charge is 0.
Hope this helped,
~cloud
Imagine you do a test cross between a purple-flowered pea plant having serrated leaves (a dominant trait) and a white-flowered pea plant having smooth edges. If the purple-flowered plant is heterozygous for both traits, the expected ratio in the offspring is 1 purple-serrated:1 purple-smooth:1 white-serrated:1 white-smooth. Instead, you see 4 purple-serrated:1 purple-smooth:1 white-serrated:4 white-smooth. What is the explanation of this ratio
Answer:
genes for flower color and edge shape are linked. They do not assort independently.
Explanation:
Available data:
test cross between a purple-flowered pea plant having serrated leaves and a white-flowered pea plant having smooth edges.serrated leaves → dominant trait smooth edges → recessive traitpurple color → dominant traitwhite color → recessive traitF1: 4 purple-serrated:1 purple-smooth:1 white-serrated:4 white-smooth.There are two genes involved in the cross. The expected ratios are 1:1:1:1 because we assume genes assort independently. However, we see a different phenotypic distribution. When phenotypic ratios differ from the expected ones, it means that genes are linked.
To know if two genes are linked in the same chromosome, we must observe the progeny distribution. If individuals, whose genes assort independently, are test crossed, they produce a progeny with equal phenotypic frequencies 1:1:1:1. But if instead of this distribution, we observe a different one, that is that phenotypes appear in different proportions, we can assume that genes are linked in the double heterozygote parent
What climate zone includes much of North America, Europe, and Asia?
A. Temperate zone
B. Polar zone
C. Pacific zone
D.Tropical zone
Polar zone includes much of North America Europe and Asia
Monosaccharides, fatty acids, nucleotides and amino acids are all monomers used to build macromolecules. Monosaccharides are the building blocks to which macromolecule?
DNA
Carbohydrates
Proteins
Lipids
Answer:
Carbohydrates
Explanation:
Fatty acids are building blocks of lipids
Nucleotides are building blocks of DNA
Amino acids are building blocks of protiens
Monosaccharides are building blocks of carbs
Monosaccharides are the building blocks to carbohydrates. The correct option is B.
The constituent parts of monosaccharides are what make up carbs. Carbon, hydrogen, and oxygen make up the macromolecules known as carbohydrates in the ratio of 1:2:1.
Simple sugars like glucose and fructose are monosaccharides, which can combine through dehydration synthesis to create bigger carbohydrate molecules.
In addition to serving as an essential source of energy for living things, carbohydrates also function as structural support for things like plant cell walls and as energy storage in the form of starch and glycogen, respectively.
To create complex carbohydrates like disaccharides (like sucrose) and polysaccharides (like starch and cellulose), the monosaccharides combine through glycosidic linkages.
Thus, the correct option is B.
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Your question seems incomplete, the probable complete question is:
Monosaccharides, fatty acids, nucleotides and amino acids are all monomers used to build macromolecules. Monosaccharides are the building blocks to which macromolecule?
A. DNA
B. Carbohydrates
C. Proteins
D. Lipids
The principle of dominance is a
inheritance pattern. It states traits that are
Answer:
This question is incomplete, it is asking to fill in the missing gaps as follows:
The principle of dominance is a ______ inheritance pattern.
It’s states traits that are ______ mask the traits that are______
The answers to the missing gaps are: MENDELIAN, DOMINANT, RECESSIVE
Explanation:
Gregor Mendel proposed the principles that govern inheritance. These principles are called MENDELIAN inheritance pattern because they align with or follow the principles of Mendel. One of these principles by Mendel is the LAW OF DOMINANCE.
Mendel has previously stated that there are two alleles for each gene. Each contrasting allele encodes a different phenotype. However, the law of dominance states that one of these two alleles called DOMINANT allele has the ability to mask the phenotypic expression of the other allele called RECESSIVE allele. In other words, a dominant trait will mask the recessive trait.
For example, in a gene Tt, allele 'T' for tallness is dominant and hence, will mask the phenotypic expression of allele 't' for shortness. This means that the tall trait (dominant) will mask the short trait (recessive) as explained by Mendel's law of dominance.
