which type of elements tend to form ionic bonds
A population of birds eats nuts and seeds. Some birds have larger beaks, and some have smaller beaks. A pair of birds usually produces four or five offspring each year. After several yeaers of little rain, the seeds became larger and larger. The birds with larger beaks were better at cracking these seeds. After several generations, the average beak size in the population increased. Bird beak size increasing after several generations is: a. decent with modification. b. variation. c. overproduction. d. adaptation
As far as I can tell, the answer would be D. Adaptation. The birds are evolving to adapt to their environment, and as such, their beaks are getting larger to crack larger seeds.
You produced 639 plants with the following phenotypes round yellow gray 269 round yellow white 98 round green, gray 86 wrinkled yellow gray 88 round green white 27 wrinkled yellow white 34 wrinkled green gray 30 wrinkled green white 7 The (observed-expected)2 was as follows round yellow white 65.61 round green gray 15.21 wrinkled yellow gray 3.61 round green white 8.41 wrinkled yellow white 16.81 wrinkled green gray 0.01 wrinkled green white 9.00 What is the chi-square value
Note about the question:
Among the (observed-expected)² list, there is one value missing. This value corresponds to round yellow gray plants, and equals 0.002. This number was included in the explanation of the problem.
Answer:
The chi-square value is X² = 2.6813.
Explanation:
Available information:
Observed individuals numbers:
Total number in the population: 639Round yellow gray 269 round yellow-white 98 round green, gray 86 wrinkled yellow gray 88 round green white 27 wrinkled yellow white 34 wrinkled green gray 30 wrinkled green white 7The expected numbers
ratio 27:9:9:9:3:3:3:1 round yellow gray 269.58 round yellow white 89.86 round green gray 89.86 wrinkled yellow gray 89.86 round green white 29.95 wrinkled yellow white 29.95 wrinkled green gray 29.95 wrinkled green white 9.98The (observed-expected) ² numbers
round yellow gray 0.002round yellow white 65.61 round green gray 15.2wrinkled yellow gray 3.61 round green white 8.41 wrinkled yellow white 16.81 wrinkled green gray 0.01 wrinkled green white 9.00To get the chi-square value, we just need to replace the terms in the following equation.
Chi square= ∑ ((O-E)²/E)
Where,
∑ is the sum of the terms O refers to the Observed number of individual E refers to the Expected numbers of individualsX² = ∑ ((O-E)²/E)
X² = (0.002/269.58) + (65.61/89.86) + (15.2/89.86) + (3.61/89.86) + (8.41/29.95) + (16.81/29.95) + (0.01/29.95) + (9/9.98)
X² = 0.0000074 + 0.73 + 0.17 + 0.04 + 0.28 + 0.561 + 0.0003 + 0.9
X² = 2.6813
Among the (observed-anticipated)² list, there's one price missing. This price corresponds to spherical yellow-grey plants and equals 0.002. This variety became protected withinside the clarification of the problem.
The chi-square value is [tex]X^ 2 =2.6813.[/tex]
Information given.
Observed people numbers:
Total variety withinside the population: [tex]639[/tex]
Round yellow grey [tex]269[/tex]
spherical yellow-white 98
spherical inexperienced, grey 86
wrinkled yellow grey 88
spherical inexperienced white 27
wrinkled inexperienced grey 30
wrinkled inexperienced white 7
wrinkled yellow white 34
The anticipated numbers
ratio 27:9:9:9:3:3:3:1
spherical yellow grey 269.58
spherical yellow white 89.86
spherical inexperienced grey 89.86
wrinkled yellow grey 89.86
spherical inexperienced white 29.9!
wrinkled yellow white 29.95
wrinkled inexperienced grey 29.95
wrinkled inexperienced white 9.98
The (observed-anticipated) 2 numbers
spherical yellow grey 0.002
spherical yellow white 65.61
spherical inexperienced grey 15.2
wrinkled yellow grey 3.61 spherical inexperienced white 8.41
wrinkled yellow white 16.81
wrinkled inexperienced grey 0.01
wrinkled inexperienced white 9.00
To get the chi-square value, we simply want to update the phrases withinside the following equation.
[tex]Chi square = Sigma((O - E) ^ 2 / E)[/tex]
Where,
[tex]Σ[/tex] is the sum of the phrases
O refers back to the Observed variety of individual
E refers back to the Expected numbers of people
[tex]X ^ 2 = Sigma((O - E) ^ 2 / E)[/tex]
[tex]X^ 2 =(0.002/269.58)+(65.61/89.86)+ Chi quare = Sigma((O - E) ^ 2 / E)[/tex]
Where,
Σ is the sum of the phrases
O refers back to the Observed variety of individual
E refers back to the Expected numbers of people
[tex]X ^ 2 = Sigma((O - E) ^ 2 / E)[/tex]
[tex]X^ 2 =(0.002 / 9.58)+(65.61/ 89.86) + (15.2/89.86)+(3.61/89.86)+(8.41/29.95)+ (16.81/29.95) + (0.01/29.95) + (9/9.98)[/tex]
[tex]X^ 2 =0.0000074+0.73+0.17+0.04+ 0.28 + 0.561 + 0.0003 + 0.9[/tex]
[tex]X ^ 2 = 2.6813[/tex]
What is chi-square?
Pearson's chi-square test is utilized to inspect the job of chance in creating deviations among noticed and anticipated values. The test relies upon extraneous speculation since it requires hypothetical anticipated that values should be determined.
Hence it clearly calculates the value of chi-square.
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true or false: Sex cells are haploid because they only contain one set of unpaired chromosomes.
Answer:
true
Explanation:
remember- Haploid it sounds like half, so when you think of half, always think of sex chromosomes. 23 chrom.
diploid- well its the other one so yeah 46 chrom.
List three properties of water that you know about from everyday living.
Answer:
heat, gas(condensation), Adhesion
what is a warm air mass that rises over a cold air mass?
Answer: warm front
Explanation: When a warm air mass meets a cold air mass, the warm air rises since it is lighter. At high altitude it cools, and the water vapor it contains condenses. This type of front is called a warm front. It generates nimbostratus clouds, which can result in moderate rain.
All organs in the human body perform important functions. Which organ controls all
of the other organs and is called the control center of the body?
stomach
B
small intestine
С
brain
D
liver
Answer:
c
Explanation:
Answer:
Well I thought it was the nervous system but that is connected/ made up of the brain so I would go for C, Brain
Explain how fossil fuels are formed from living organisms on land and in sea.
Match the words to the definitions
When your body begins to get too hot, it begins to sweat in order to try and cool itself down in order to stay at a temp of around 98 degress. This is an example of what?
1. Cellular Respiration
2. Thermodynamics
3. Homeostasis
Answer:
it calms down and gets to get cool again
Answer:
2
Explanation:
thermoregulation is process that allows your body to maintain its core internal temperature
Help witg number 7
Please its esay
Petunia flower color is governed by two alleles, but neither allele is truly dominant over the other. Petunias with the genotype R1 R1 are red-flowered, those that are heterozygous (R1 R2 ) are pink, and those with the R2 R2 genotype are white. This is an example of incomplete dominance. (Note that superscripts are used rather than upper- and lowercase letters to describe the alleles).
a. If a white-flowered plant is crossed with a red-flowered plant, what is the genotypic ratio of the F1?b. What is the phenotypic ratio of the F1?c. If two of the F1 offspring were crossed, what phenotypes would appear in the F2?d. What would be the genotypic ratio in the F2 generation?
Answer:
a. 4 R¹R²
b. 4 Pink flowers
c. 1 Red, 2 pink and 1 white phenotypes
d. 1R¹R¹ : 2R¹R² : 1R²R²
Explanation:
This question involves a single gene coding for flower color in petunia plants. However, the allele for red flower color (R¹) is incompletely dominant over the allele for white flower color (R²), hence, a pink intermediate phenotype (R¹R²) is formed.
According to these questions;
A. If a white-flowered plant (R²R²) is crossed with a red-flowered plant (R¹R¹), all of the F1 generation will have a genotype of R¹R² (see attached image for punnet square).
B. The F1 generation, which possess a genotype: R¹R² will express the pink flower phenotype because neither of the two alleles are truly dominant over the other i.e incomplete dominance.
C. If two of the F1 offspring were crossed i.e. R¹R² × R¹R², each parent will produce R¹ and R² gametes. Using these gametes in a punnet square (see attached image), the following phenotypes will be produced in the F2 generation: Red, pink and white phenotypes
D. The F2 generation will possess a genotypic ratio of 1R¹R¹ : 2R¹R² : 1R²R².
HELPPPPPPPPPPPPpbdishejwieieie
Answer:
B
Explanation:
Question 4
1 pts
Pollution in the water cannot
into the air.
evaporate
condensate
transpire
o
flow
Every cell has 3 billion DNA base pairs. How does this long strand of DNA fit into a nucleus?
Answer: These DNA though is long, it is small. it would be half-squished in the nucleus. Because it is half squished, that is why they can be infected by viruses.
This answer not be correct, by the book i read said so.
When is genetic drift a major factor in evolution
I NEED HELP ASAP!!
1. is Pepsi a mixture or pure substance?
2. is Sulfur mixture or pure substance?
3. is Copper penny pure or substance?
Answer:
Pepsi- Mixture
Sulfure- Pure substance
Copper penny- Mixture
Explanation:
Two Drosophila with genotypes AABBCC and aabbcc are crossed to produce a heterozygous offspring, AaBbCc (the gene order is unknown). This AaBbCc Drosophila is crossed with an aabbcc Drosophila, resulting in the offspring below: Number: Phenotype: 600 ABC and abc 200 AbC and aBc 150 ABc and abC 50 Abc and aBC a. Which phenotype represents the double crossovers
Answer:
The double recombinant individuals are less frequent ---> Abc and aBC
Explanation:
We can know if genes are linked, by looking at the progeny distribution. In a tri-hybrid cross, If individuals, whose genes assort independently, are test crossed, they produce a progeny with equal phenotypic frequencies 1:1:1:1:1:1:1:1. If we observe a different distribution, meaning that phenotypes appear in different proportions, we can assume that genes are linked in the heterozygote parent.
We can recognize the parental gametes because their phenotypes are the most frequent in the descendants, while the double recombinants are the less frequent. Finally, the simple recombinant gametes are the ones with intermediate phenotypes frequencies.
In the present example, the phenotypic ratio shows different proportions than the expected ones if they were not linked.
We can recognize the parental gametes in the descendants because their phenotypes are the most frequent,
ABC and abc 600while the double recombinants are less frequent.
Abc and aBC 50And simple recombinant gametes produced by the cross, which frequencies are intermediate.
AbC and aBc 200 ABc and abC 150a. Which phenotype represents the double crossovers
The double recombinants are less frequent ---> Abc and aBC
All of the following are composed of body cells EXCEPT
a. bone
b. kidney
c. liver
d. sperm
what re stomata?how do they help leaves tomae food.
love you all
Answer:
Stomata allow a plant to take in carbon dioxide, which is needed for photosynthesis. They also help to reduce water loss by closing when conditions are hot or dry. Stomata look like tiny mouths which open and close as they assist in transpiration.
:)
Please look at the picture and answer ASAP
Sex cells in male organisms are called _______ cells.
a. sperm
b. egg
Answer:
A. Sperm
Explanation:
hope i helped
In many parts of the world, there is a rock layer rich in the metal iridium. Iridium is very rare on Earth, but it is relatively common in meteorites and other debris that comes from outer space. All occurrences of this iridium layer are from the same geologic epoch, at the very end of the Cretaceous. Most of the fossils in rock layers below the iridium layer, including dinosaur fossils, do not appear in layers above the iridium layer.
Based on this evidence from the rock and fossil record,
A.
meteoroids and other space debris did not impact the Earth at the end of the Cretaceous.
B.
an asteroid impact likely caused a mass extinction at the end of the Cretaceous.
C.
meteorites and other space debris no longer contain the metal iridium.
Answer:
B.
an asteroid impact likely caused a mass extinction at the end of the Cretaceous.
Explanation:
I did this assinment.
How can your nose signal a problem?
Answer:
Your nose is part of your sinus system (ew!) and it can tell you if you're sick by a runny nose, congestion, and sniffles.
Answer:
It can detect dangers, both inside and outside the body.
Explanation:
Outside of the body, of course, it can smell smoke and things like that, but if you're going into diabetic ketoacidosis, you'll smell a very sweet, fruity smell before you start to have seizures and other effects.
Several species of warblers (warblers are birds) can live in the same spruce tree ONLY because they:
Answer:
They inhabit numerous niches within the forest.
Explanation:
All the biophysical environments where a species lives and how it acquires what it wants for its life and reproduction. In same forest, three separate warbler species live. No, since they occupy the environment, and get nutritional resources across multiple locations on the plant.
Answer:
occupy different niches within the tree
Explanation:
How does energy and matter move through the ecosystem
Answer:
Using the food chain which originates from the sun's energy.
Explanation:
Answer:
matter moves through an ecosystem through the recycling of energy and nutrients between different trophic levels. The first trophic level consists of primary producers like plants that can be manufactured their own food through photosynthesis. Similarly plants are require nutrients like nitrogen to grow.
Explanation:
Image result for How does energy and matter move through the ecosystem
In ecosystems, matter and energy are transferred from one form to another. ... Decomposers break down dead plant and animal matter. Producers (plants) use sunlight and other nutrients to make their own food through photosynthesis. Consumers are the animals that consume, or eat, other living things.
How were the novae on Venus similar to the landforms in Gerva's computer model?
How did the results of Gerya's model provide evidence for what formed the novae on Venus? Pls help it’s due today
How did the stop codon mutation in Lucy’s ADA gene stop her ADA protein from working?
Answer:
The stop codon mutation in Lucy's ADA gene stopped her ADA protein from working by putting a hault to the process of translation.
Explanation:
This stopped it from working because it lead to a protein that was then nonfunctional.
Question 4 (2 points)
(03.05 LO
Which statement is true? (2 points)
Geothermal power is generated from moving water
Oil, a renewable resource, is processed to make
jet fuel
Wind power can turn turbines to generate electrical power
d
Propane, a renewable resource, is used in some heating systems.
Answer:
B is true
i took the test
Oil is a renewable energy resource. It is processed to make jet fuel. Thus, the correct option is B.
What are renewable energy resources?Renewable energy is the energy which is derived from natural sources which are replenished at a higher rate than they are being consumed. Sunlight and wind are the two such sources of energy which are constantly being replenished from the planet. Renewable energy sources are present in plentiful amounts and are found all around us.
Jet fuels are the energy fuels which are typically made by the blending and refining of various crude oils such as petroleum distillation products including naphtha, gasoline, or kerosene in order to meet the specific military or commercial specifications required.
Therefore, the correct option is B.
Learn more about Energy resources here:
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All body cells are diploid cells because they contain two sets of chromosomes.
true or false
Explanation:
Yes they both contain atleast 2 chromosomes
