Answer:
The next generation average time to flowering will be 98 days.
Explanation:
Before answering the question, we need to know a few concepts.
Artificial selection is the selecting practice of a specific group of organisms in a population -that carry the traits of interest- to be the parents of the following generations. Parental individuals carrying phenotypic values of interest are selected from the whole population. These parents interbreed, and a new generation is produced. The selection differential, SD, is the difference between the mean value of the trait in the population (X₀) and the mean value of the parents, (Xs). So,SD = Xs - X₀
Heritability in the narrow-sense, h², is the genetic component measure to which additive genetic variance contributes. The heritability might be used to determine how the population will respond to the selection done, R.h² = R/SD
The response to selection (R) refers to the metric value gained or lost from the cross between the selected parents. R can be calculated by multiplying the heritability h², with the selection differential, SD.R = h²SD
R also equals the difference between the new generation phenotypic value (X₁) and the original population phenotypic value (X₀),
R = X₀ - X₁
-------------------------------------------------------------------------------------------------------------
Now that we know these concepts and how to calculate them, we can solve the proposed problem.
Available data:
trying to decrease the maturation time in a population of sunflowers.the population mean time to flower is 100 days → X₀Chosen parental Plants mean flowering time is 90 days → Xs the narrow-sense heritability for flowering time is 0.2 → h²According to what we sow previously, we need to find out the value of X₁, which reflects the next generation average time to flowering.
We know that R = X₁ - X₀, so we need to clear this formula to calculate X₁X₁ = R + X₀
We already know that X₀ = 100 days,
Now we need to calculate R.
R = h²SDWe know that h² = 0.2,
Now we need to calculate SD
SD = Xs - X₀Xs = 90 days → Parentals media flowering time
X₀ = 100 → Population media flowering time
SD = Xs - X₀
SD = 90 - 100
SD = - 10 days
Knowing this, we can calculate R
R = h²SDo h² = 0.2
o SD = - 10
R = 0.2 x (-10)
R = - 2
Finally, once we know the R-value we can calculate the X₁ valueX₁ = R + X₀
X₁ = - 2 + 100
X₁ = 98
Part C Firefly luciferase is the enzyme that allows fireflies to illuminate their abdomens. Because this light generation is an ATP-requiring reaction, firefly luciferase can be used to test for the presence of ATP. In this way, luciferase can test for the presence of life. The coupled reactions are 1.2.luciferin+O2ATP⇌⇌oxyluciferin+lightAMP+PPiΔG∘=−31.6 kJ/mol If the overall ΔG∘ of the coupled reaction is -4.80 kJ/mol , what is the equilibrium constant, K, of the first reaction at 6 ∘C ?
Answer:
K = 9.620 × 10⁻⁶
Explanation:
From the given information:
Temperature T= 6° C
= (273 + 6)K
= 279 K
The correct and well presentation of the reactions are:
1. [tex]Luciferin + O_2[/tex] ⇆ oxyluciferin + light ΔG₁°
2. ATP ⇄ AMP + PP[tex]_i[/tex] ΔG₂° = -31.6 kJ/mol
The overall ΔG° = -4.80 kJ/mol
Let's first determine the ΔG₁° for the equation (1)
ΔG° = ΔG₁° + ΔG₂°
- ΔG₁° = - ΔG° + ΔG₂°
ΔG₁° = ΔG° - ΔG₂°
ΔG₁° = ( -4.80 - (-31.6) ) kJ/mol
ΔG₁° = 26.8 kJ/mol
Using the formula:
ΔG° = -RTIn K
[tex]In \ K =\dfrac{-\Delta G^0}{RT} \\ \\ log \ K = -\dfrac{\Delta G^0}{2.303RT}[/tex]
[tex]log \ K = -\dfrac{\Delta G_1^0}{2.303RT} \\ \\ log \ K = -\dfrac{26.8 \times 10^3 \ J/mol}{2.303\times 8.314 \ J/mol/K \times 279 \ K} \\ \\ log \ K =- 5.017[/tex]
K = antilog (-5.017)
K = 9.620 × 10⁻⁶
The theory of Copernicus contained six hypotheses:
The sun is at the _______ of the planets.
The Earth is ______ of the planets.
All the planets _______around the sun.
Each planet revolves around the sun in its own______ and at different _______
.
The moon______ around the Earth.
The stars are ______part of the solar system.
Answer:
The theory of Copernicus contained six hypotheses:
The sun is at the center of the planets.
The Earth is one of the planets.
All the planets orbit around the sun.
Each planet revolves around the sun in its own orbit and at different distances.
The moon orbits around the Earth.
The stars are not part of the solar system.
Explanation:
hope this helps :)
What is the answer to this question
Answer:
3 I think I hope its right
NEED THIS BY TODAY!! Please.
Answer:
AACUUG
Explanation:
why most plants cannot survive in deserts?
Answer:
maybe beacuse there not enough water and its too hot the sun will dry them up
Explanation:
Answer:
Because the ground is not fertile.
and there is too much of sunlight.
PLS HELP ME
no links
Answer:
0% RR 100%Rr 0% rr is the answer
Answer:
RR is the and sorry if it is incorrect
I need someone to help me by answering this questions....
sorry I don't know maybe I should try
______ can amplify the effects of temperature by increasing the rate of heat loss by convection.
Answer:
wind
Explanation:
As the air heats up and becomes less dense, it rises higher into the atmosphere, thereby cooler air takes its place and produces wind (moving air is wind). This wind can produce a positive feedback loop that increases the transfer of heat by both evaporation (i.e., by losing heat through the conversion of water to vapor) and convection (i.e., through the movement of air). In consequence, wind created by temperature fluctuation can amplify the effects of temperature. In organisms, winds can also contribute to water loss by increasing the evaporation/transpiration rate.
In a study published in the journal Nature, scientists studied eight ponds in Florida: four that were populated by a species of fish and four that were not. As they studied the ponds, they noted that the areas around the four fish-populated ponds showed decreased populations of dragonflies and dragonfly larvae, whereas the four without fish showed abnormally large populations of dragonflies and larvae. Dragonflies feed on bees, butterflies, and other pollinators.
Required:
Predict what would happen to the rate of pollination of flowers in a field next to a pond with no tish.
Answer: the rate of pollination of flower, in a field next to a pond with no fish, will DECREASE.
Explanation:
POLLINATION is defined as the process by which flowering plants, through the aid of external agents such as insects,wind, water and other animals, are able to transfer pollen grains from an anther to a receptive stigma. Insects are the most common pollinators. They visit flowers to obtain nectar and pollen as source of food. Flowers use various features, such as colour and scent, to attract and guide insects to the food source within them. In the process of reaching their source of food, insects bring about pollination.
From the study conducted by scientist in Florida, eight(8) ponds where subjected to the the study. The first four (4) ponds had species of fishes that fed on dragonflies and dragonfly larvae, hence the reason for a decrease in the population of the dragon flies in the area around it. While the remaining four (4) ponds had NO fish and the area around it is populated with dragonflies and dragonfly larvae. This is so because of the absence of fish.
It was then noted that the dragon lies fed of the insect pollinators such as the bees and butterflies. Since these dragonflies and its larvae are abundant in the field which is close to the pond with no fish, they will grossly depend on the insect pollinators as their source of food thereby decreasing the rate of pollination in the field next to the pond with no fish.
What has been an advantage of producing transgenic plants?
Answer:
The main advantages of transgenic plants include larger yield, resistance to diseases and pests and capable of growing under stressful conditions, while their main disadvantages include allergic reactions, emergence of super-pests and loss of biodiversity.
4
Select the correct answer.
Why does temperature decrease with higher altitude?
A.
Air is held strongly together by gravity, so there is less heat transfer.
B.
Air density is lower, so there is less heat transfer.
C.
Air density is higher, so there is less heat transfer.
D.
Air pressure is higher, so there is less heat transfer.
Answer:
air density is lower, so there is less heat transfer
Explanation:
Radiation is absorbed by the ground of Earth and this heats the surroundings along with tropospheric air through conduction and convection process. ... Thus, we can conclude that temperature decrease with higher altitude as air density is lower, so there is less heat transfer.
Answer:
The correct answer would be B.
Air density is lower, so there is less heat transfer.
I got this right on a test. I hope this helps!
WhiWhich of the following statements about traits is true?
A. All organisms within a population will have the sametraits.
B.A trait that is helpful in one environment will benefit organisms in all environments.
C. Organisms with helpful traits are more likely to survive and pass those traits on to their offspring.
D. An organism cannot have traits that would help it survive in environmental conditions that are different from the conditions of its habitat.
Answer:
C
Explanation:
Survival of the fittest
Answer:
I believe the correct answer is
C. Organisms with helpful traits are more likely to survive and pass those traits on to their offspring.
does somebody know how many correct questions are needed to pass the Biology 1 STAAR/EOC ? Mine is tomorrow help besties
Answer:
I dont really know but I think its 38
Explanation:
Is there an unconformity? ___________
2. 5 is a _____________________ ______________.
Answer:
what is short sightedness?
Help i need all 3 done
Answer and Explanation:
1. Transform
2. Convergent
3. Divergent
Sorry, it took me a while to add this but my mum wanted me for something..
Which of the following nutrients is organic?
iron
water
sodium
protein
Answer:
Protein is the answer
Explanation:
Proteins are considered organic molecules because they are made up of carbon atoms with hydrogen, oxygen and nitrogen attached
A population of 24000 has couples that have 2 babies. What is the number of babies?
Answer:12000 babies
Explanation: 24000/2 = 12000
A certain plant species has an adaptation that makes it contain a bad-tasting chemical. Which is the MOST LIKELY result of this adaptation? The plant is able to live in many different environments. Animals are more likely to eat the plant. The chemical aids in photosynthesis. • Animals are less likely to eat the plant.
Answer:
Animals are less likely to eat the plant
Explanation:
It tastes bad so they wont want to eat it again
Animals are less likely to eat the plant and It tastes bad so they wont want to eat it again.
What are Adaptation?The process by which organisms adapt to their environment in order to increase their chances of surviving in that environment is known as evolutionary adaptation, or simply adaptation.
The biological process through which organisms adapt to brand-new surroundings or alterations in their current environments is known as adaptation.
Wallace and Darwin both went beyond basic adaptation when formulating the notion of evolution by natural selection by describing how organisms adapt and evolve.
Therefore, Animals are less likely to eat the plant and It tastes bad so they wont want to eat it again.
To learn more about Adaptation, refer to the link:
https://brainly.com/question/12534888
#SPJ2
Define protein synthesis
Answer:Protein synthesis is the process in which cells make proteins
Explanation:
Protein synthesis is the process in which cells make proteins. It occurs in two stages: transcription and translation. Transcription is the transfer of genetic instructions in DNA to mRNA in the nucleus. It includes three steps: initiation, elongation, and termination
Why did land animals evolve back to aquatic environments?
Answer:
Life on Earth began in the water. So when the first animals moved onto land, they had to trade their fins for limbs, and their gills for lungs, the better to adapt to their new terrestrial environment. ... In air, eyes can see much farther than they can under water.Explanation:
Answer: Life on Earth began in the water. So when the first animals moved onto land, they had to trade their fins for limbs, and their gills for lungs, the better to adapt to their new terrestrial environment. ... In air, eyes can see much farther than they can under water. Tetrapods evolved from a group of organisms that, if they were alive today, we would call fish. They were aquatic and had scales and fleshy fins. ... Between 390 and 360 million years ago, the descendents of these organisms began to live in shallower waters, and eventually moved to land.
Explanation:
during photosynthesis,an energy transformation take place.which one of these happens during photosynthesis
Answer:
In a broader sense, photosynthesis, including CO2 anabolism, can be divided into several steps: i) photoelectric charge isolation using photon energy (conversion to electrical energy), ii) fixation of electrical energy in the form of chemical energy (ATP synthesis), and iii) chemical reactions involving ATP (fixation ..
Explanation:
Which characteristic could help you distinguish between types of fungi
Answer: The correct answer would be the spores made by the fungi.
The major phyla of the fungi are usually classified on the basis of characteristics of sexual structures.
For instance, the chytridiomycota produce zoospores, the blastocladiomycota undergo sporic meiosis, the ascomycota forms ascospores et cetera.
Fungi are mainly classified into seven phyla:
Microsporidia
Chytridiomycota
Blastocladiomycota
Neocallimastigomycota
Glomeromycota
Ascomycota
Basidiomycota
Hope I helped.
A tall red flowered plant is crossed with a short white flowered plant.
Answer:
lol what's this biro..........
What do you notice about the products of cellular respiration compared to the reactants of photosynthesis
Photosynthesis converts carbon dioxide and water into oxygen and glucose. Glucose is used as food by the plant and oxygen is a by-product. Cellular respiration converts oxygen and glucose into water and carbon dioxide. Water and carbon dioxide are by- products and ATP is energy that is transformed from the process.
Similarities between plant cell,prokaryote cell and eukaryotic cell
Answer:
In structure, both animal and plant cells are quite similar. Both possess nucleus and plasma membrane, a selectively permeable membrane of the cell. Both animal and plant cells include membrane-bound organelles with their specialized functions.
The flowers bloom.
Hello there
Answer:
hello hope you are fine
please mark me as brain list ☺️
Suppose the stereocilia of one hair cell become permanently bent toward the kinocilium. What will most likely happen as a consequence
Answer:The options are not given, here are the options from another website.
a. A single pitch will be constantly perceived
B. A single pitch will no longer be perceivable
c. A or B depending on the hair cell's location
d. A or B depending on the bending's direction.
The correct option is d.
A or B depending on the bending's direction
Explanation:
This is because stereocilia are normal bent where there is a shearing force that occur when there is a up and down movements of the basilar membrane . When stereocilia bend towards the kinocilium, it make it depolarizes the cell and lead to the afferent activity to rise up and when the stereocilia bend away from the kinocilium , it hyperpolarizes the cell and lead to a reduction in afferent activity.
The consequences of this are that a single pitch will be noticed, or no pitch will be noticed. This will depend on the direction the stereocilia have bent.
We can come to this answer because:
Stereocilia are cellular accessories that help cells move around.They can curve up or down, generating different but very important effects.If the curvature is made towards the kinocilium, we can notice the formation of a pitch, as the cell becomes polarized.If the curvature is in the opposite direction to the kinocilium, the cell will be depolarized and it will not be possible to visualize the pitch.In this case, we can state that the consequences of the curvature of the stereocilia will depend on the side towards which this curvature is directed.
More information:
https://brainly.com/question/14016721?referrer=searchResults
28. The model below shows what happens to chromosomes during a certain part of the cell cycle. Why
is this step in the cell cycle important for maintaining a functioning organism?
1 chromosome
1 chromosome
(before mitosis)
(after replication)
centromere
1 chromatid
per chromosome
2 chromatids
per chromosome
a. Each cell needs a complete set of organelles in order for the cell to work properly
b. Copying the DNA provides more instructions so the cell can work more efficiently
C. Each cell needs to receive a complete copy of the chromosomes in order for the cell to work
properly
yes
Answer:
C. Each cell needs to receive a complete copy of the chromosomes in order for the cell to work properly
Explanation:
The model in this question depicts the process of DNA replication, which is the process whereby an identical copy of DNA is made. Based on the model in the question, one (1) individual chromosome forms two (2) sister chromatids per chromosome. Each sister chromatid contains the replicated DNA.
This process is very important and must occur prior to any cell division because every cell needs to receive a complete copy of the chromosomes in order for the cell to work properly. For example, each human cell must receive 23 pairs of chromosome or 46 chromosomes in order to function well and this is ensured by DNA replication.
What is chlorophyll
Answer:
[tex]\huge{\boxed{\bold{ANSWER}}}[/tex]⏩
╭⋟───────────────
⏩ Chlorophyll is the green pigment present in plants that helps in photosynthesis.
───────────────⋞╯
ʰᵒᵖᵉ ⁱᵗ ʰᵉˡᵖˢ
# ➳ GuMiHo ࿐
A phase when the cell focuses solely
on growing:
Answer: A cell spends most of its time in what is called interphase, and during this time it grows, replicates its chromosomes, and prepares for cell division. The cell then leaves interphase, undergoes mitosis, and completes its division.