A population of plants growing in a field is examined over a period of years. The plants have either white or yellow flowers.
What best explains the observations?
A. White flowers increase the plant's fitness, so the population is under directional selection.
B.Yellow flowers increase the plant's fitness, so the population is under directional selection.
C.Yellow flowers increase the plant's fitness, so the population is under disruptive selection.
D.White flowers increase the plant's fitness, so the population is under disruptive selection.
Answers
Thebest explanation for the observation is that white flowers increase the plant's fitness, so the population is under directional selection.
What is genetic variation?Genetic variation refers to the differences that exists in the genes of organisms of the same species or different species.
The gene for flower color in the plants has two alleles for yellow and white flower color.
Over time, the proportion plants with white-colored flower increased while that of yellow decreased.
Therefore, the best explanation for the observation is that white flowers increase the plant's fitness, so the population is under directional selection.
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Related Questions
James Surowiecki's analysis is consistent with the slogan that: A. too many cooks spoil the broth. B. birds of a feather flock together. C. two heads are better than one. D. opposites attract.
Answers
James Surowiecki's analysis is consistent with the slogan that two heads are better than one and it is a proverb and there are several acronyms too. Thus, option C is correct.
What is acronym?Acronym has been defined as the short form of long words such as very important person and the acronym of very important person has VIP. The word acronym has been used to denoted the short term of a word in which two or more than two words combined together to form new short word.
Acronym has been always starts with capital latter and the first word's letter is always capital. Capitalization has the most important part of writing as it has the rule of writing that the first latter of the word that starts a sentence must be capital or starts with capital latter.
The sentence has a group of sensible or meaningful word that combines together to form a complete and sense full sentence. The sentence has several type such as positive sentence, negative sentence, exclamatory sentence as well as introgetive sentence.
Therefore, James Surowiecki's analysis is consistent with the slogan that two heads are better than one and it is a proverb and there are several acronyms too. Thus, option C is correct.
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Average soil contains about what
percentage of mineral deposits?
A. 5%
B. 45%
C. 90%
Answers
Answer: It would be B. 45%
Nervous System
STIMULUS – RESPONSE PERFORMANCE LAB 38 points
PURPOSE: To measure response time after visual, auditory, and tactile stimuli have been practiced.
MATERIALS: meter stick or a yard stick (If you don’t have one - something about three feet long and stiff will work. You could get cardboard for example and mark off the distances on it..)
PROCEDURE:
Place your arm on a desk or table top with your hand resting on the edge. Your thumb and forefinger need to be projecting over the edge and about 2cm apart.
Your LC, friend or family member will hold the meter stick in a vertical position so that the zero end of the meter stick is halfway between your thumb and forefinger. The holder of the stick will drop it without warning you. You are to catch the meter stick as soon as possible after it has been released. Record on the data table the number of centimeters the meter stick dropped before you caught it.
Repeat the procedure 9 more times.
Repeat the procedure in steps 2 and 3 but this time close your eyes and have your LC, friend or family member tell you the moment the meter stick is dropped. Repeat this 9 more times and record the data in the data table.
Repeat the procedure in steps 2 and 3 but this time use a tactile stimulus. Have your LC, friend or family member touch you as soon as the meter stick is dropped. Be sure your eyes are closed. Repeat 9 more times and record your data.
Repeat the procedure in steps 2 and 3 but this time your LC, friend or family member will try to distract you as they drop the meter stick. Repeat 9 more times and record your data. 20 pts
Signal/Distance
1
2
3
4
5
6
7
8
9
10
Visual Distance (cm)
Auditory Distance (cm)
Tactile Distance (cm)
Distraction Distance (cm)
ANALYSES AND CONCLUSIONS
1. How did the auditory response time compare to the other signals? 2pts
2. How did the tactile response time compare to the other signals? 2 pts
3. How did your response time change with practice? 2 pts
4. Rank the response time from the slowest to the fastest. 2 pts
5. From these results draw a conclusion about practice with regard to stimulus – response time. Remember to state your claim, use evidence, and then make a conclusion. 10 pts
Answers
Answer:
Explanation:
Place your arm on a desk or table top with your hand resting on the edge. Your thumb and forefinger need to be projecting over the edge and about 2cm apart.
Your LC, friend or family member will hold the meter stick in a vertical position so that the zero end of the meter stick is halfway between your thumb and forefinger. The holder of the stick will drop it without warning you. You are to catch the meter stick as soon as possible after it has been released. Record on the data table the number of centimeters the meter stick dropped before you caught it.
Repeat the procedure 9 more times.
Repeat the procedure in steps 2 and 3 but this time close your eyes and have your LC, friend or family member tell you the moment the meter stick is dropped. Repeat this 9 more times and record the data in the data table.
Repeat the procedure in steps 2 and 3 but this time use a tactile stimulus. Have your LC, friend or family member touch you as soon as the meter stick is dropped. Be sure your eyes are closed. Repeat 9 more times an
Please help.
There is a species of frog on an island that puzzles scientists. The proportion of frogs with no stripes is greater than the proportion of frogs with stripes. This is puzzling because the unstriped trait is recessive (s), and the striped patterns are due to dominant alleles (S). Also, natural selection seems to support the striped trait.
How do genetic factors most likely account for the proportion of traits in the frog population?
A. Most of the striped frogs and unstriped frogs have the genotype ss.
B. Most of the striped frogs have the genotype SS and the unstriped frogs have the genotype ss.
C. Most of the striped frogs have the genotype SS and the unstriped frogs have the genotype Ss.
D. Most of the striped frogs have the genotype Ss and the unstriped frogs have the genotype ss.
Answers
Which protists are heterotrophs?
(Hint: Heterotrophs cannot make their
own food.)
A. fungus-like and plant-like protists
B. plant-like protists
C. animal-like and fungus-like protists
D. plant-like and animal-like protists
Answers
An acellular entity composed of a small circular RNA molecule without a capsid and capable of replicating its genome is known as
Answers
An acellular entity made up of a small circular RNA molecule without a capsid and capable of replicating its genome is known as viroid.
What is RNA?RNA is a complex high-molecular weight molecule that participates in cellular protein production and, in some viruses, replaces DNA as a carrier of genetic instructions.
Viroids are nucleic acid species with a unique structure and low molecular weight that cause a variety of illnesses in cultivated plants. Certain animal and human diseases may be caused by similar nucleic acid species. Viroids are the tiniest known infectious disease agents.
Viroids, unlike viral nucleic acids, are not encapsulated. Viroids multiply autonomously in cells of sensitive plant species, despite their small size.
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1. A 42,000 kg train car travelling at 10 m/s toward a stationary train car with a mass of 40,000 kg. After collision, the two sticked and moved together with the same speed. Solve for the final speed of the combined object after collision and identify their direction.
Answers
Given,
A 42,000 kg train car travelling at 10 m/s toward a stationary train car with a mass of 40,000 kg.
What is momentum?Momentum is a product of the mass of a particle and its velocity. Momentum is a vector quantity which means it has both magnitude and direction. Its formula = mass × velocity.
Solve for momentum:
M= (42,000kg)(40,000kg) / (10m/s)
M = 42,000 kilograms - 40,000 kilograms
M = 2,000kg
M = 2,000 kg ÷ 10m/s
= 200m/s
-Thus they collison at the same speed of 200m/s.
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what type of organisms take in atmospheric carbon dioxide?
Answers
What is the shortest interval on record between the birth of two siblings?
Answers
Answer:
208 days
Explanation:
The shortest interval between two children born to separate confinements is 208 days for Jayne Bleackley (New Zealand) who gave birth to Joseph Robert on 3 September 1999 and Annie Jessica Joyce on 30 March 2000.
Natural capital includes all of Earth's resources and processes that benefit
humans and other living things. What trend is occurring with Earth's natural
capital?
O A. Earth's natural capital is increasing rapidly as the human
population increases.
B. Ecosystems are replenishing natural capital faster than humans
are using it up.
O C. Humans are using up natural capital faster than it is being
replenished.
O D. Sustainable development is greatly reducing Earth's natural
capital.
Answers
Answer:C
Explanation:
just took
what is the smartest animal?
Answers
Answer:The smartest animal is a Dog to me but It is a CHIMPANZEES.
Explanation:
CHIMPANZEES.
The values in a(n) _____________ code are continuous.
Answers
Answer:
data
Explanation:
A continuous variable is a quantitative variable that has an infinite number of possible values that are not countable. A continuous variable may take on every possible value between any two values.
. If a substance changes form one phase to another, is it still the same substance?
Answers
Answer:
Yes
Explanation:
A phase change does not change the chemical make-up of a substance. Phase changes are typically temperature dependent, and change only the movement and physical arrangement of the atoms and molecules in the substance. Water, for example, is composed of two hydrogen atoms attached to an oxygen atom by covalent bonds. That stays the same whether the water is solid (ice), liquid (water), or gas (steam). The chemical structure of water does not change as it goes through the different faces. It's still water. What does change is the speed at which the molecules move and how far apart they are as a result. Water vapor consists of molecules moving quickly and at random. As temperature drops, water molecules slow down. Since water is slightly polar, hydrogen bonds form between the molecules bringing them closer together.
An object is placed in an electric field. the object is not affected by the electric field. the strength of the electric field is then increased. what can be said about the object?
Answers
Answer:
neutron
Explanation:
In fact, a particle is affected by an electric field only if it is electrically charged. The neutron is electrically neutral (its charge is zero), so it does not interact with the electric field.
Answer:The object does not carry a charge.
Explanation:
Now, noise pollution issues are
MOSTLY handled at the
A. federal level only
B. international level
C. local and state levels
D. federal and local levels
Answers
Answer:
the answer is local and state levels
Explanation:
The example of the Deepwater Horizon illustrates which of the following?
A. There is no regulation in the oil industry.
B. Once pollution occurs, recovery is impossible.
C. There is no longer a viable fishing industry in the Gulf Coast.
D. Accidents can have devastating consequences for the environment.
Answers
Answer:
he necessity for environmental regulations and improved clean-up plans is now being discussed and taken seriously.
Explanation:
I don't know the answer but you can get help from this
A ________________ is the rod shaped part of a cell that carries the genes.
Question 2 options:
cell membrane
chromosome
phenotype
genotype
Answers
Answer:
The rod-shaped structures in the cell nucleus that contain genes are called chromosomes.
What is the relative humidity of a dry-bulb temperature of 15°C and wet-bulb temperature of 12°C
Answers
The relative humidity of a dry-bulb temperature of 15°C and a wet-bulb temperature of 12°C is 71%.
What do you mean by Relative Humidity?Relative humidity may be defined as the proportion of atmospheric moisture present compared to the amount that would be present if the air were permeated.
Relative humidity can be calculated by subtracting the temperature of the dry bulb from the temperature of the wet bulb.
After getting a specific value, refer to the relative humidity chart at the particular value of the dry-bulb temperature.
Therefore, the relative humidity of a dry-bulb temperature of 15°C and a wet-bulb temperature of 12°C is 71%.
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Which is the answer a b or c.
Answers
it's option A
hope it helps...!!!
How were scientists able to identify what gene was mutated when they studied families in Finland?
Answers
The scientists employed the use of X-exome sequencing to identify rare gene mutations in the families.
What is X-exome sequencing?This involves the process of genes on chromosome X being identified through positional cloning and used ib various studies.
This was used to identify rare gene mutations in the families in Finland thereby making it the most appropriate choice.
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motion is needed for work to have been done true or false
Answers
Answer:
Ture
For work, in Science to be done a force must be exerted and there must be motion or displacement in the direction of the force
what is it light and how does it travel?
Answers
Answer:
Light is both waves and particles, which are described as packets of energy called photons. These waves, or photons, travel in narrow beams called rays. Only when light rays move from one medium to another, such as from air to water, their linear paths altered.
Explanation:
Hope this helps:) Goodluck!
Answer:
is a transactional reflection from a shiny object that travels through carbon monoxide
during the day what do plants prouduce
Answers
Answer:
Oxygen is the CORRECT ANSWER
Explanation:
They produce oxygen by photosynthesis they take in carbon dioxide and make oxygen.
what do chromosons form from
Answers
Answer:
DNA wraps around proteins called histones to form units known as nucleosomes. These units condense into a chromatin fibre, which condenses further to form a chromosome.
Explanation:
Have a good day Btw dont worry bout my name
How is the lac operon
regulated?
A. It is regulated by chemical signals.
B. It is regulated by transcription factors.
C. It is regulated by the presence of lactose and the lac
repressor gene.
Answers
The development of cars has been good in some ways and bad in others. The
car has allowed for better transportation but it is also responsible for a great
deal of pollution. Which activity helps solve the pollution problem through the
use of new technology?
O A. Building fewer cars
B. Encouraging people to ride a bus
OC. Building cars that give off less pollution
D. Encouraging people to walk more
Answers
Answer:
d is the correct answer
Explanation:
D. Encouraging people to walk more
so less pollution is made
our sun is a star that is fueled by a specific type of nuclear reaction. which type of nuclear reaction is this?
Answers
Answer:
The reaction is called Nuclear Fusion
Which birds of prey are the most common and are considered fierce hunters.
Answers
The most common birds of prey that are considered fierce hunters include eagles, hawks, and falcons.
Predating BirdsPredating birds or birds of prey are species of birds whose survival-hood depends on them hunting down other animals for food.
Birds of prey are usually equipped and well adapted to hunting their prey. These adaptations include well-developed claws and beaks, a special swooping ability, very sharp eyesight, and so on.
Examples of birds of prey include eagles, hawks, and falcons.
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How do flowers help other organisms in our environment?
Answers
2. what is the trend between 20-30 years in the kelp population? explain.
Answers
The trend between 20-30 years in the kelp population is that it is reducing due to sea urchins eating kelp and clipping the bottoms, hence, stopping kelp from regrowing.
What is the trend in the Kelp population?Kelp is a form of giant seaweed found in ocean floors.
Kelp serve as food for certain sea animals such as sea urchins.
However, due to increasing number of sea urchins and increase in environmental pressures, the Kelp population reduced in the last 20 to 30 years.
Therefore, the trend between 20-30 years in the kelp population is that it is going down due to sea urchins eating kelp and clipping the bottoms, hence, stopping kelp from regrowing.
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