Answer:
The correct answers are "The DNA in a nucleosome is wound around eight histone proteins", "Between nucleosomes is a stretch of DNA called "linker DNA", "H1 seals off where DNA enters and leaves the nucleosome", "Nucleosomes contribute to DNA packing", and "Histones have tails that stick out and can be modified, affecting DNA expression".
Explanation:
Nucleosomes are comprised of DNA and histones that in conjunction form structural units of the chromosomes. The DNA in a nucleosome is wound around eight histone proteins, which are known as the histone octamer. Between nucleosomes is a stretch of DNA called "linker DNA", which is an unwrapped DNA that can be between 10 to 50 base pairs long. H1, one of the four types of histone, seals off where DNA enters and leaves the nucleosome serving as an anchor to the complex. Nucleosomes contribute to DNA packing by wrapping the DNA and forming the structural units of the chromosomes. Histones have tails that stick out and can be modified, affecting DNA expression; which are known as "histone tails" located in the N-terminal side and where higher order structures are arranged.
Q1:
A male child with wavy hair is born to a mother with curly hair and a father with straight hair.
Which type of inheritance best explains the child’s hair type?
A
codominance because the child’s hair type is a blend of the parental hair types
B
codominance because both the male and the female carry the gene for hair type
C
incomplete dominance because the child’s hair type is a blend of the parental hair types
D
incomplete dominance because both the male and the female carry the gene for hair type
Odpowiedź:
A) codominance because the child’s hair type is a blend of the parental hair types.
Wyjaśnienie:
AA - curly hair
aa - straight hair
Aa - qualities AA + qualities aa = Wavy hair
The type of inheritance that best explains the child’s hair type is codominance because the child’s hair type is a blend of the parental hair types. The correct option is A.
What is inheritance?Inheritance is the transfer of genes and characteristics from the parent generation to the offspring. It is done in sexual reproduction. The traits of the mother and the father are transferred into the child.
Codominance is a type of inheritance in which the traits of the father and the mother get blended and a third different type of trait is shown in the offspring.
Here, the father has straight hair, and the mother has wavy hair, but the male child shows the hair is wavy hair. This shows the process of codominance in the child.
AA - curly hair
aa - straight hair
Aa - qualities AA + qualities aa = Wavy hair.
Thus, the correct option is A. codominance because the child’s hair type is a blend of the parental hair types.
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Out of the following, which level of organization is the most specific?
A
order
B
kingdom
C
domain
D
family
Answer:
family
Explanation:
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Please determine whether the statement is true or false;
In vertebrates, the central nervous system (CNS), consisting of the brain and the spinal cord, integrates information, while the nerves of the peripheral nervous system (PNS) transmit sensory and motor signals between the CNS and the rest of the body.
Select ALL the correct answers.A forest was cleared to build a road. Which two would be the most likely effects on the ecosystem?
The deforested land will not be able to support large trees again.
Some species will develop adaptations to survive in the deforested land.
Some populations will migrate out of the deforested area.
Some animals will instantly adapt to the deforested environment.
Answer:
Some species will develop adaptations to survive in the deforested land.
Some populations will migrate out of the deforested area.
Explanation:
The deforested land will be able to support large trees eventually in the future, and animals cannot instantly adapt to anything.
Therefore, the most logical answers are populations will migrate to forest lands and species will eventually develop adaptations to help them in the newly deforested land.
I hope this helps! :)
If we were able to artificially alter the membrane permeability of pacemaker cells so that calcium influx is blocked
Answer:
The Heart rate would decrease
Explanation:
The Heart rate is expected to decrease, as calcium influx in blocked , since the threshold membrane potential can not be reached so quickly so the action potential will take place in longer time leading to decreased heart rate.
This Pedigree represents a family with an Autosomal Recessive Disorder. What is the probability that IV4 and IV5 have a child with the trait?
As this family has an Autosomal Recessive Disorder, we must know that this disorder will only be expressed, in the family members who are homozygous recessive (aa), in this way, to know the probability of IV-4 and IV-5 to present the disorder, we must evaluate the probabilities of combinations of their parents' alleles in a diagram called a punnett square.
In the pedigree above, we can see that the dark colored balls and squares represent the members of the family who have the disorder and therefore have the "aa" genotype.
Thus, when observing the crossings throughout the family, we know that the father of IV-4, has the genotype "Aa", however we do not know which genotype of the mother of IV-4, but as she does not have the disorder, she may have the genotype "Aa", or "AA", for that reason, we must make the punnett square for both situations and see what the probabilities of IV-4 will present the disorder.
As you can see in the figure attached below, if IV-4's mother has the "Aa" genotype, IV-4 will have a 25% chance of presenting the disorder. If IV-4's mother has the "AA" genotype, IV-4 has a 0% chance of inheriting the disorder.
In the case of IV-5, we can see that his mother has the disorder and therefore has the genotype "aa", we know that his father does not have the disorder, but we do not know if the father's genotype is "AA" or "Aa "and therefore we must evaluate both situations.
As you can see in the figure below called "IV-5", if IV-5's father has the "AA" genotype, IV-5 will have a 0% chance of inheriting the disorder. However, if IV-5's father has the "aa" genotype, IV-5 will have a 50% chance of inheriting the disorder.
The mass of an object doubles. What happens to the gravitational force between it and another object whose mass stays the same, assuming they remain the same distance apart?
Answer is the amount of the gravitational force doubles.
I do not understand this. Can someone explain it to me? Thank you.
Answer:
When they double the force of gravity quadruple.
Explanation:
(:
How does the temperature of the ocean or the land around a city affect the city’s climate?
Answer: Ocean currents act as conveyer belts of warm and cold water, sending heat toward the polar regions and helping tropical areas cool off, thus influencing both weather and climate. ... Land areas also absorb some sunlight, and the atmosphere helps to retain heat that would otherwise quickly radiate into space after sunset.
Explanation: -oceanexpolorer
hope this helps and can u give me brainliest i'm trying to level up
How might the heat from a forest fire help certain gymnosperms reproduce?
Ovules produce more sticky liquid,
Cones open and release seeds,
Trees spread pollen farther.
Seedlings grow faster,
Answer:B) Cones open and release seeds .
Explanation:idk man I got it right so like why not put it here because it might help other people
Answer:
The answer is B
Explanation:
The nations of the world agreed to preserve Antarctica for
A military activity
B. scientific research
C. the storage of radioactive waste
D. the expansion of their territories
Please select the best answer from the choices provided
Answer: is B scientific research.
Explanation:
What is an anaerobic respiration
AThe process sells used to release energy from glucose and oxygen is not available
BPhysical activity that increases heart And breathing rates
C The process cells used to release energy from glucose in the presence of oxygen
D Physical activity that decreases heart and breathing rates
Answer:
A
Explanation:
Anaerobic respiration occurs when there is not enough oxygen to produce aerobic respiration.
name the types of neurons that are involved in reflex action
Answer:
sensory, motor and relay. Hope this helps!
Explanation:
Which did Kepler notice about planetary motion that caused him to propose Kepler’s first law of orbital motion?
Answer is the distance to the sun varies.
I do not understand it. Can you please explain? Thank you.
Answer:
He is saying that the distance to the sun affects the orbit.
Explanation:
(:
Answer:
the distance of the sun varies because the earth has an elliptical orbit same reason some months are longer.
Explanation:
Determine whether each characteristic describes a nonvascular plant or a vascular plant.
are small when fully grown
are always seedless
can be large when fully grown
normally live in moist environments
may have seeds
can live farther from water
Answer:
Vascular plants:
Can be large when fully grown.
May have seeds.
Can live farther from water.
Nonvascular plants:
Are small when fully grown.
Are always seedless.
Normally live in moist environments.
Explanation:
Plants can be classified regarding their flowering and their vasculature. When taking vasculature into consideration, they can be classified as Vascular Plants or Nonvascular plants.
Vascular plants have separate tubular tissues that are used to transport food and water, while nonvascular plants do not have these tissues. For this reason, nonvascular plants have a much harder time controlling the water inside them, and that's why they need to live in humid environments in order to survive. Vascular plants, on the other hand, can live in places farther from water.
Since they do not have vasculature, nonvascular plants are short in length, which makes it easier to survive considering the lack of tubular structures made for transport that vascular plants have.
Nonvascular plants do not have a vasculature, which means they do not have roots, stems, leaves nor seeds.
How does an increased population size affect the amount of competition between organisms?
21 points. ANSWER FAST FOR BRAINIEST. Why is the human body a system of interacting subsystems
composed of a group of specialized cells and tissues? (please use detail and be very specific!) this is supposed to be an essay but please just give me the main points/ the most important info!
I give brainiest and thanks! appreciate it :) SCIENCE
Answer:
Structure and Function. In multicellular organisms, the body is a system of multiple interacting subsystems. These subsystems are groups of cells that work together to form tissues and organs that are specialized for particular body functions.
Organs are groups of tissues that work together to perform a particular body function. Tissues and organs are specialized for particular body functions.
Hope this helps :)
What are the origins of severe weather and how can one be prepared for severe weather in the area?
Answer: When warm air moving northward meets the cooler air to the north, a warm front forms. ... Mid-latitude cyclones and their associated fronts are responsible for such severe weather conditions as thunderstorms, snow storms and associated hail, lightening, and occasional tornadoes. -EarthSci
Explanation: If you have time before severe weather hits, secure loose objects, close windows and doors, and move any valuable objects inside or under a sturdy structure. Help Your Neighbor: Encourage your loved ones to prepare for severe thunderstorms. Take CPR training so you can help if someone is hurt during severe weather. -weather.gov
Hope this helps and can u mark me brainliest i'm trying to level up :)
which of the following words best matches this definition: The process in which the best adapted organisms survive and pass on their traits, while those that are NOT well adapted do not survive.
Answer:
Survival of the fittest
Explanation:
According to the Darwin’s theory of survival, a species can survive among its peers only when it is fit enough to adapt to the natural changes and hence remain alive till its reproductive stage in order to produce fertile offspring.
Such species which survive are known as fit species while the remaining unable to cope with changing environment die out at an early stage of life.
What are three ecosystem services provided by biodiversity.
Answer:
food water habitat
Explanation:
DQ19: A pea plant must have exactly one of each of the following pairs of traits: Short (s) or tall (t); round (r) or wrinkled (w) seeds; yellow (y) or green (g) peas; and white (wh) or purple (p) flowers. For example, a pea plant can be short with wrinkled seeds, green peas and white flowers. How many different classifications of pea plants are possible
Answer:
There are 16 possible different classifications of pea plants.
Explanation:
In order to get the number of classifications, you must multiply all the possibilities by each other in each trait. This is, each trait has two states (short or tall, round or wrinkled, yellow or green, white or purple) and are referred to as "pair of traits". These must be multiplied with the other pairs of traits. So, the number of different classifications of pea plants is:
the number of high states x number of shape states x number of peas color sates x number of flower color states = 2 x 2 x 2 x 2 = 16.
true or false: the momentum is moving planets does not depend on their masses
This is false, because plants have angular momentum, which is found by the formula (mass x velocity x distance). Therefore, mass is an important factor in a planet's momentum.
Why do you think scouts could hear better through the solid ground rather than
through the air?
Answer:
Sound travels better through solids than through air.
Explanation:
Think about being in the pool: you can hear a lot of things, albeit muffled a little. Or think about tapping a really long pole, and someone standing far away can hear the vibration or the noise while touching the pole.
Solids are more tightly packed together. Sound needs a medium to travel though, and anything with densely packed atoms is better than loosely packed. The hierarchy is solid > liquid > air. Kinda funny that we do most of our talking through air.
Which of the following is the best definition of the term genotype?
A genotype is a feature in the genes. I know this since a pheno is a physical trait while geno meaning gene is a trait in the genes that can't be seen.
The genotype refers to an organism's entire genetic makeup, including all of its inherited genes.
What is a genotype?It represents the underlying genetic information that determines the traits and characteristics an organism will have, such as eye color, height, and susceptibility to certain diseases.
The genotype is influenced by the combination of genes passed down from parents and can also be affected by mutations or changes in the DNA sequence. The genotype serves as the blueprint for an organism's development and can impact its phenotype, or observable traits and characteristics.
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How do organims form carbon films
Answer:
Organisms form carbon film when sediments cover the organisms and decay of organisms form hollows.
Explanation:
Answer:
Organisms form carbon film when sediments cover the organisms and decay of organisms form hollows.
When an organism is covered by sediment, it begins to decay. When decaying, the organisms release a gas. This process in turns leaves a thin film of carbon that preserves parts of the organisms.
(Hope this helps) Sky
Consumers differ from producers in that unlike producers, consumers ___________.
a.
do not require energy inputs
b.
cannot make their own food
c.
make their own food
d.
cannot sense and respond to change
e.
do not pass DNA to offspring
Answer:
Consumers differ from producers in that unlike producers, consumers cannot make their own food.
Explanation:
Producers like plants make their own food not consumers like humans.
hope it helps!
Consumers differ from producers in that unlike producers, consumers .b. cannot make their own food.
Producers can make their own food and energy, but consumers are different. Living things that have to hunt, gather and eat their food are called consumers. Consumers have to eat to gain energy or they will die. There are four types of consumers:
omnivores, carnivores, herbivoresdecomposers.How do consumers differ from producers?The producers generate food for themselves and others; consumers do not produce anything, instead eating producers, other consumers or both. Organisms that eat only producers (i.e., plants) are called herbivores. Animals that eat only consumers (i.e., meat) are called carnivores.
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A characteristic that an organism can pass on to its offspring through it’s genes
Answer:
hair color or eye color
Explanation:
dont know how to explain
Answer:
A trait. unless you're looking for specific traits then look at the other person's answer.
Explanation:
A trait is a characteristic passed on the the offspring
Thick fur to stay warm is it physical or behavior adaptation
Answer:
Physical
Explanation:
Answer:
Physical adaptation
Explanation:
Think fur is a change in an animal's non-mental biological makeup. This is physical, whereas a behavioral adaption would be a change in the way an animal acts.
A student plays football outside on a hot day and lost a significant amount of water in sweat. How will this affect his blood volume?
A.Blood volume decreases
B. Blood volume stays the same
C. Blood volume increases
Answer:
A.Blood volume decreases
Explanation:
Blood volume refers to the fluid substances including blood circulating in the body via blood vessels. The blood volume must be optimal in order to ensure that every organ in the body gets an ample amount of blood. One of the things that can result in alteration of the normal blood volume is DEHYDRATION, which is the loss of water from the body.
Dehydration decreases the blood volume because the water content in the blood becomes decreased as water is lost, which would have detrimental effects on the body because the blood pressure (force at which blood flows) will be reduced.
This is the case of the student in this question that loses a significant amount of water as sweat when he undergoes exercise in a hot weather condition. The loss of water will result in the decrement of his blood volume.
List 4 characteristics of plants
Photosynthesis,Cuticle, Cell Walls,Reproduction
Which of the following two statements describe benefits of bio technology in medicine
1. using stem cells to treat disease
2. using antibiotics to treat infection
3. diagnosing genetic diseases
4. producing antibodies such as antitoxins
5. curing diseases such as smallpox
The correct answers are 1. Using stem cells to treat disease, and 3. Diagnosing genetic diseases.
Explanation
Biotechnology is a science that covers different areas such as chemistry, biology, and technology, to improve or facilitate procedures related to living organisms by manipulating living or parts of these in areas such as agriculture, medicine, and pharmacy. In the area of medicine, biotechnology is in charge of working with DNA to improve people's health. Also, it is in charge of investigating the cells to know in depth the problems that trigger diseases or genetic problems. Another use of biotechnology in medicine is through the use of stem cells in treatments for self-renewal or regeneration of damaged tissues. So, the correct answers are 1. Using stem cells to treat disease, and 3. Diagnosing genetic diseases.
Here's the Answers, Hope this Helps
