Which of the following is an example of genomic imprinting in humans? Which of the following is an example of genomic imprinting in humans? A random pattern of autosomal allele inactivation is observed. In some allele pairs, only the paternal sourced allele is expressed, and in others, only the maternal sourced allele is expressed. The maternal and paternal alleles of a gene pair are both expressed. Human males have only one Y-chromosome and one X-chromosome. One of the two X-chromosomes in females is randomly expressed and the other is repressed.
Answer:
In some allele pairs, only the paternal sourced allele is expressed, and in others, only the maternal sourced allele is expressed.
Explanation:
Genomic imprinting is an epigenetic phenomenon where alleles are differentially expressed depending on their parental origin (for example, paternally expressed when it is inherited from the father). Genomic imprinting is controlled by epigenetic modifications (for example, DNA methylation, histone acetylation, etc) which works together to preferentially activate the expression of the allele inherited from one parent and simultaneously silence or “imprint” the expression of the allele inherited from the other parent. In humans, an example of genomic imprinting is the case of the insulin-like growth factor 2 (Igf2) gene, which is maternally imprinted (repressed), thereby this gene is only expressed from the paternal allele.
4) What factors influence the circulation of the Earth's atmosphere,
thereby producing our weather?
The uneven heating of the earth's surface is one of the main variables affecting the circulation of the atmosphere globally along with seasonal variations in precipitation and temperature and Earth turning on its axis.
What is weather?The state of the atmosphere is referred to as the weather, and can be described in a number of different ways, including the degree to which it is hot or cold, wet or dry, quiet or stormy, clear or cloudy. The troposphere, the lowest layer of the Earth's atmosphere, is where the majority of meteorological events take place. The stratosphere is the next layer up from the troposphere. The term "weather" is used to describe the temperature, precipitation, and other characteristics of the atmosphere on a day-to-day basis.
Variations in air pressure, temperature, and moisture from one location to another are the primary contributors to a day's weather. These disparities can be attributed to the fact that the angle at which the Sun is positioned at any given location varies with latitude. The vast temperature difference between the polar and tropical air masses is what gives rise to the biggest scale atmospheric circulations.
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Two plants are named Vinca minor and
Vinca rosea. Are they close relatives?
Explain.
Standard deviation refers to the __________. A. statistics used to organize, summarize, and describe sample data B. value within a given set of data in its original form C. average distance between variable scores and the mean in a set of data D. difference between the largest and smallest variable scores in a set of data Please select the best answer from the choices provided A B C D
Answer:
C. average distance between variable scores and the mean in a set of data
Explanation:
The standard deviation is used to find how far data points are from the mean. This can be used to create a bell curve, which represents what percentile data points are relative to the set. A bell curve shows how the data points are distributed. Standard deviation can be found from an entire data set or just a sample.
of the uterus.
The start of pregnancy occurs when the blastocyst embeds in the
-lcorpus luteum
-endometrium
-fimbriae
-follicle
Where would you expect to find humans with the darkest skin color in the Northern Hemisphere (from 10°N to 60°N)?
Answer: Australia
Explanation:
5.Most of the fish in a lake produce a certain number of eggs each spring. However, one fish has the ability to carry and lay more fish eggs.
This is a ________ advantage that allows for ___________________.Lector inmersivo
(1 Punto)
survival; the fish to live longer.
reproductive; the fish to produce more offspring.
reproductive; the fish to swim faster.
survival; the fish to produce offspring more often.
Answer:
reproductive; and produce offspring
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Grasses → mice → cat → coyote A natural disaster of a fire has occurred what could happen to this food chain? The grasses will be gone and all of the consumers will be able to leave. The grasses will be gone and some of the mice will die but the number of cats and coyotes will remain the same. The grasses will be gone but the number of consumers will all stay the same. The grasses will be gone and any surviving consumers will have to look for new resources in that environment. Nothing will happen to this food chain.
Answer:
The grasses will be gone and any surviving consumers will have to look for new resources in that environment.
Explanation:
The fire will destroy the grass and harm some of the consumers. Without grass, the mice population will drop and that will cause the cat population to drop and that will lead to the coyote population to also decline. The remaining consumers will have to move to find further resources to survive.
Answer:
The answer will be D
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Complete the statement about genetic variation.
Meiosis contributes to genetic variability when
the chromosomes line up randomly during
metaphase 1 anaphase I prophase I. This
random line-up means that when the cell divides,
the number of chromosomes in each cell is the
same, but the contents are not. This process is
called | independent assortment |gene linkage |
crossing over|. During meiosis, |gene linkage|
|independent assortment | crossing over | increases
genetic variation because it shuffles portions of
chromosomes around.
Answer:
1. Metaphase 1
2. Independent assortment
3. Crossing over
Explanation:
Meiosis is a kind of cell division that reduces the chromosome number of the parent cell by half. It only occurs during sexual reproduction and ensures genetic variation in sexually reproducing organisms.
Meiosis contributes to genetic variability when the chromosomes line up randomly at the cell plate during METAPHASE 1 of meiosis. This process of random alignment is called INDEPENDENT ASSORTMENT of genes. Generally, meiosis is able to ensure genetic variability due to a process called CROSSING OVER. Crossing over is a process whereby nonsister chromatids of homologous chromosomes exchanges/shuffles genetic contents.
Drinking too much water during exercise can cause a condition in which the concentration of sodium in the blood is lower than normal. What immediate response what are the blood cells have in this condition?
Explanation:
People may also drink excessive water because of a psychiatric disorder called psychogenic polydipsia. The result is too much water and not enough sodium. Thus, overhydration generally results in low sodium levels in the blood (hyponatremia),which can be dangerous.
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What does it mean to "induce" your cells?
Answer:
Induction, in embryology, process by which the presence of one tissue influences the development of others.
What is the smallest size category of soil (less than 0.002 mm in diameter)?
O A. Silt
B. Sand
C. Clay
D. Gravel
Answer:
Clay particles
Explanation:
The particles that make up soil are categorized into three groups by size – sand, silt, and clay. Sand particles are the largest and clay particles the smallest.
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PLEASE HELP !! ILL GIVE 40 POINTS ; PLUS BRAINLIEST !! DONT SKIP ANSWER.
Answer:
The answer is D.
Explanation:
Only 11% of freshwater is in swamps, so option A is incorrect.
The groundwater on earth appears to be a fraction of the freshwater, so option B is incorrect.
We can see that only 3% of the Earth's water is freshwater, so option C is incorrect.
68.7% of Earth's freshwater is found in icecaps and glaciers, meaning it is the majority of Earth's freshwater. Therefore, option D is correct.
why water is essential for all living things
Answer: Living organisms need water to survive. Organisms require water to break down food molecules or generate energy during the respiration process. Water also helps many organisms regulate metabolism and dissolves compounds going into or out of the body.
State and discuss two types of immunity.
Answer:
How Does the Immune System Work?
Innate immunity: Everyone is born with innate (or natural) immunity, a type of general protection. ...
Adaptive immunity: Adaptive (or active) immunity develops throughout our lives. ...
Passive immunity: Passive immunity is "borrowed" from another source and it lasts for a short time.
Which influence has immigration and migration had on the population of Texas?
A.) It has kept the growth rate of Texas the same as the growth rate of the United
States.
B.) It lowered the amount of cultural and economic activity in Texas.
C.) It contributed to the 38% of Hispanic Texans as of 2010.
D.) It decreases the need for public services in rural communities.
Answer:
The answer is choice C.
Explanation:
In this question, I will use the following format: two d*mbs, a trick, & a true. In this strategy, there are two d*mb answers, one answer made to trick the reader, and one true answer (which is the correct answer).
The two d*mbs of this problem are choices B and D. B simply makes no sense since immigration and migration would increase the amount of cultural and economic activity in Texas if anything. I feel as though D is illogical because it is more likely that immigration and migration would increase the need for public services in rural communities. Due to B and D being the opposite of what is necessary for the answers to be true, they can both be swiftly eliminated.
A is the trick of this question. Although it may seem valid at first, there is a fatal flaw about it: the fact that Texas is within the United States. Texas, despite its size and population, is one singular part of the US. It is impossible for Texas to be the only part of the United States to grow. As a result, the growth rate of Texas can never be the same as the growth rate of the United States.
C is the true in this problem. Immigration and migration contributing to the 38% of Hispanic Texans (as of 2010) is indeed a logical answer that adds up. Additionally, when looking at the official resources that this question is derived from, the text clearly states that 'The numbers and percentages of Hispanics in Texas grew greatly between 2000 and 2010. About 2.8 million more Texans identified themselves as Hispanic in 2010 compared to 2000. Hispanics represented 38 percent of all Texans compared to about 32 percent in 2000.' While this information may not seem all that important at a first glance, it actually supports this answer quite a bit. The text clearly provides valid proof of answer choice C; it gives the cause of answer choice C quite plainly and undeniably.
This means that A is the trick, B and D are the d*mbs, and C is the true. Due to the evidence and verification previously stated in my answers, it is quite clear (to me) that the answer is indeed choice C.
In case you're wondering, the words with apostrophes are * d u m b * and * d u m b s * . I get why they censored them, so I simply accommodated and blocked the vowel.
The predicted values for the four phenotypes form a ratio. The simulated values match this predicted ratio.
Answer:
9:3:3:1 ; approximately
Explanation:
Just did it
What are the causes of soil compaction? (Site 1)
Answer:
Internal factors include particle-size distribution, organic matter content, mineralogy and water content of the soil. Externally applied forces are generally mechanically applied forces, the primary source of these being vehicular traffic
Explanation:
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The diagram below shows a food web.
How would the removal of the rabbit population affect the other populations in the ecosystem?
A. The field mouse population will decrease.
B. The snake population will increase
C. The lizard population will increase.
D. The tree population will decrease
Answer:
C. because the grasshopper will have less competition to eat Grass letting them reproduce more, since the grasshopper's population increases there will be more food for the lizards helping them reproduce more.
3. What charge does the hydrogen atoms have in a molecule of water?
Answer: Opposite charges attract one another. The slight positive charges on the hydrogen atoms in a water molecule attract the slight negative charges on the oxygen atoms of other water molecules. This tiny force of attraction is called a hydrogen bond. This bond is very weak.
Answer:
Negative
Very small charge in water.
A tall pea plant results from a dominant tall allele while the short phenotype results from two recessive alleles. What is the frequency of short offspring (pp) when a tall pea plant with one tall allele (Pp) is cross-pollinated with a short pea plant (pp)?
Answer:
0.5
Explanation:
Took the test xd ♡
The probability of short pea plant when a heterozygous parent cross with recessive is 0.5.
Law of dominance:
The cross between two pure parents results in the heterozygous dominant offspring in the first generation.
Here,
Parents are
P- dominant tall
p - recessive
Pp x pp
The cross,
p p
P Pp Pp
p pp pp
From the cross it is clear that 50% of the offspring will have recessive alleles.
Therefore, the probability of short pea plant when a heterozygous parent cross with recessive is 0.5.
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Look at the apparatus shown. It can be used to compare the amount of __________ given out by different fuels. What one word completes this sentence?
It can be used to compare the amount of energy given out by different fuels.
Thermometer is that apparatus which is used to measure the temperature of the liquid or solution. Temperature is a measure of the kinetic energy of the molecules that is present in a substance. When we record the temperature of something, we are collect information about how fast the molecules are moving in the liquid by heating the solution.
In this experiment, thermometer is dipped into the solution in order to record the amount of energy given out by burning of different fuels so we can conclude that the apparatus is used to measure the amount of energy given out by burning of different fuels.
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Why do specialized plant cells lose their ability to divide
Answer:
The cells of permanent tissues do not divide. Cells derived from divisition of meristematic to see take up specific role and lose the ability to divide
Explanation:
Answer: In older years, many of the cells experience wear and tear. As a result, they lose their ability to divide or repair themselves.
Explanation: I hope this helps, may God bless you! :)
10 Many organelles in a cell are bound by membranes. Which organelles consist of
membranous tubes and sacs and serve as part of the cell's packaging and transport
system?
F. mitochondria and lysosomes
G. mitochondria and chloroplasts
H. ribosomes and endoplasmic reticulum
I. Golgi apparatus and endoplasmic reticulum
Answer:
Golgi Apparatus and Enoplasmic Reticulum
Explanation:
Both organelles are membranous organelles that assist in the function of packaging and transport. Endoplasmic reticulum is the site for protein synthesis while the Golgi Apparatus serves as the delivery system.
I hope this helps!
how does a wave change direction when it bounces off a surface?
Which type of electromagnetic wave is the most similar in wavelength to visible light?
A. Radio Waves
B. Gamma radiation
C. Ultraviolet light (UV radiation)
D. Sound waves
Answer:
uv
Explanation:
im pretty sure
An organism's cientific name identifies the ______ and the _____ in which the organism belongs
Answer:
Genus, Species
Explanation:
Genus and Species, when combined, give you the scientific name of an organism. For example, humans are called h0mo sapiens. Our genus is h0mo and our species is sapiens. Hope this helps :)
Please help me name each letter and match it to the definition. (Do not spam on my question either please)
Answer:
1. B. Medulla oblongata contains cardiac, respiratory, vasomotor and reflex centers.
2. A. Hypothalamus is the major regulator of ANS
3. D. Occipital lobe is the location of visual cortex.
4. F. Sensory areas are primary site responsible for perceiving cutaneous sensory sensations and proprioception.
5. E. Motor areas directs conscious motor movement
6. C. Cerebellum - coordinates movement by comparing intended movement with actual movement.
7. K. Corpus callosum allows communication between right & left cerebral hemispheres.
8. J. Frontal Lobe - Cognition, personality.
9. A. Hypothalamus - Contains hunger, thirst and thermoregulatory centers.
What is required for reactants to form bonds?
Answer:
Energy input is required for the reactants to form bonds.
Is there any one who knows how to answer the biology question above
Answer:
1.. 10,000 joules
2. 1,000 joules
3. 100 joules
Explanation:
This is due to the 10% Rule. The 10% Rule states that on average 90% of energy stays at its current level while 10% is passed down when the holder of the energy is consumed.
Answer:
Tertairy=0.1
secondary=1
primary=10