Answer:
See the answer below
Explanation:
Using the formula for calculating Chi square ([tex]X^2[/tex]):
[tex]X^2[/tex] = [tex]\frac{(O - E)^2}{E}[/tex] where O = observed frequency and E = expected frequency.
The observed frequencies for the four phenotypes are 88, 62, 62, and 81 respectively.
For the expected frequency, the phenotypes are supposed to assort in 9:3:3:1 according to Mendel ratio.
Hence, expected frequencies are calculated as:
phenotype (1) = 9/16 x 293 = 164.81
phenotype (2) = 3/16 x 293 = 54.94
phenotype (3) = 3/16 x 293 = 54.94
phenotype (4) = 1/16 x 293 = 18.31
The [tex]X^2[/tex] is calculated thus:
Phenotype O E [tex]X^2[/tex]
1 88 164.81 [tex]\frac{(88 - 164.81)^2}{164.81}[/tex] = 35.80
2 62 54.94 [tex]\frac{(62 - 54.94)^2}{54.94}[/tex] = 0.91
3 62 54.94 [tex]\frac{(62 - 54.94)^2}{54.94}[/tex] = 0.91
4 81 18.31 [tex]\frac{(81 - 18.31)^2}{18.31}[/tex] = 214.64
Total [tex]X^2[/tex] = 35.80 + 0.91 + 0.91 + 214.64 = 252.26
To the nearest tenth = 252
Degree of freedom = n - 1 = 4- 1 = 3
[tex]X^2[/tex] tabulated = 7.815
The calculated [tex]X^2[/tex] exceeds the critical value, hence, the null hypothesis is rejected. The two genes did not assort independently.
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.
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.
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:
(:
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.
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! :)
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
What are three ecosystem services provided by biodiversity.
Answer:
food water habitat
Explanation:
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.
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:
hurry!! Which best describes the reactants and products of photosynthesis?
O Reactants are formed inside the plant, and products are taken in from the environment by the plant
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O Reactants are taken in in the environment by the plant, and products are formed inside the plant
O Reactants and products are formed inside the plant
O Reactants and products are taken in from the environment by the plant.
Answer:
the answer is the second one
Explanation:
say, your mom is make cookies, and she goes to the store to buy the ingredients and comes back, the ingredients are the reactants, and the cookies are the products, make sense?
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
The table shows images of four animals being compared
Which animals share the characteristic of having the same
number of legs?
Animal
alte
A)the parrot and the octopus
B)the giralle and the parrot
C)the giraffe and the horse
D)the octopus and the horse
Parrot
Answer:
C because they both have 4 legs!!!Answer:
C) the giraffe and the horse
Explanation:
they both have four legs and are similar
List 4 characteristics of plants
Photosynthesis,Cuticle, Cell Walls,Reproduction
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.
For each statement, indicate which are sensation and which are perception
1. A bite of the fruit tastes sweet and acidic.
2. Ouch! That sandpaper is rough.
3. "Your song" is playing in the grocery store. 4. Suddenly you notice a sharp and acrid smell. 5. You can tell your co-worker has walked by when you smell his cologne.
6. Isn't that Bob from the office coming out of that store?
7. Tasting potato-leek soup reminds you of Thanksgiving at your aunt's house.
8. That beeping is loud and penetrating.
9. You don't notice the feel of your clothes on your skin.
10. The flower garden has many colors and shapes.
Answer:
1. perception
2. perception
3. sensation
4. sensation
5. sensation
6. perception
7. perception
8. perception
9. sensation
10. perception
Explanation:
Sensation and perception are two processes which look very similar to each other but are a different process.
Sensation involves the sensory organs of the body which can sense the physical world around us whereas perception involves the process which involves the brain as it organizes and interprets the sensory input.
1. perception- Taste is considered the perception because the taste is interpreted in the brain.
2. perception- the sensory receptors send the signals about roughness to the brain where the brain tells that the substance has roughness.
3. sensation- playing a song in the grocery store is an example of sensation as the person has just listened to the music and is not interpreting whether it is good or bad.
4. sensation- smell involves the sensory receptors but the taste of the smell is perception therefore is the smell is considered a sensation.
5. sensation- the smell is sensation therefore sensation is correct.
6. perception- perception involves the memory, experience and emotions therefore recognizing Bob is considered perception.
7. perception- reminding of soup involves memory, therefore, is considered perception.
8. perception-loud sound involves the brain, therefore, is a perception
9. sensation-feel of cloth is by sensory receptors but the type of feel will be perception.
10. perception-colour and shape are recognised by the brain and depends on memory, therefore, are perception.
2 body systems when shooting an arrow
Answer:
Muscle and bones? They work to shoot an arrow.
Explanation:
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.
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.
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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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
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.
Learn more about genotype, here:
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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 :)
How are oceans directly affected by increased carbon dioxide concentrations in the atmosphere?
Answer:
the acidity of the ocean would increase
Hope this helps!
How does an increased population size affect the amount of competition between organisms?
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:
Which statement is correct about how lights travel
Answer:
1. Answer: Light can travel in a vacuum, and its speed is constant if the source is moving or stationary.
Light travels at constant speed in vacuum even if the source is moving or stationary. If the source is moving, the apparent frequency/ wavelength changes.
What is a lenticular galaxy? A. It is a type of galaxy that is an intermediate between a spiral galaxy and elliptical galaxy. B. It is an intermediate stage of evolution between an elliptical galaxy and spiral galaxy. C. It is a type of irregular galaxy that resembles a malformed ellipse. D. It is a galaxy stripped of gas and dust that contains young, bright stars.
Answer:
A. It is a type of galaxy that is an intermediate between a spiral galaxy and elliptical galaxy
Explanation:
Identifying Plant Tissues
Identify the plant tissues in the three images.
A
B
C
Answer:
dermal
vascular
ground
Explanation:
edge 20
give one reason mendel chose pea plants for his experiment .
Answer:
-Pea plants reproduce sexually
-Male and female sex cells on pea plants allowed Mendel to cross pollinate them
-Pea plants have a variety of traits
Explanation:
