Answer:
It's A :)
Explanation:
About 100 of the offspring would have pink flowers, while about 300 would have white flowers. So, the correct answer is D.
An allele is a different nucleotide sequence at the same location on a lengthy DNA molecule. Crossing over refers to the exchange of DNA between paired homologous chromosomes one from each parent during the meiotic process.
In the first cross, pure-breeding white flower plant is crossed with pink flower. When these two plants are crossed, all of the offspring will have one allele for white flower color and one allele for pink flower color. This is because the white allele is dominant, so the pink allele will be masked.
This cross will result in offspring that are heterozygous for flower color. The offspring of these heterozygous plants will have a 3:1 ratio of white flower to pink flower. This is due to the fact that only one potential combination of alleles can result in pink flowers (Pp), but there are two possible combinations that can produce white blooms (WW or Wp).
So, on crossing these plants to produce 400 offspring, 300 offspring will have white flowers and approximately 100 offspring will have pink flowers.
Therefore, option D is correct.
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Please Help!
What can you determine from the principles of cross-cutting relationships?
A. Layers that cut across the most other features are youngest.
B. In a given region, all layers of sediment form at the same time.
C. The layers of sediment on the bottom are the oldest.
D. Two different types of sediment will not cut across each other.
Science A P E X
Which table correctly describes the functions of the cell structures
listed
HELP ME PLEASE
Answer:
The correct answer is - cell membrane - regulates cell contents.
Explanation:
Various cell structures have different cellular functions in the cells. The major function of the chloroplast is to produce sugar with the help of chlorophyll pigment by trapping the sunlight. The mitochondria perform cellular respiration and convert sugar to energy.
The vacuoles are the cell structure that helps in maintaining water balance and also store nutrients and sometimes help in waste disposal, however, it is not its major function. The cell membrane is the cellular structure and barrier that regulate what cell content will move outside the cell and what will enter.
easy questions, easy points
Answer:
Pretty sure they're both A.
Answer:
person above is correct
A
Explanation:
Explain the relationship between autotrophs heterotrophs and decomposers In 4 to 5 sentences
Answer:
please give me brainlist and follow
Explanation:
Autotrophs (or producers) make their own food using light or chemical energy. Examples of autotrophs include plants, algae, and some bacteria. ... Animals, fungi, and many bacteria are heterotrophs. Specialized heterotrophs, called decomposers break down dead organic material and wastes.
describe how a reflex action is coordinated by the different parts of the human nervous system
answer: by nerve cell or a nerve fibres
Humans produce the enzyme amylase. This enzyme breaks down starch, a
complex carbohydrate found in many food sources (e.g. potatoes, breads).
Explain why the human digestive system is unable to use amylase to break down
the complex carbohydrate cellulose, which is also found in some foods (such as
celery).
Explanation:
We lack the enzyme cellulase which is the enzyme required to break down cellulose.
Base on the given information, human can produce the enzyme amylase, but cannot produce the appropriate enzymes that is able to breakdown the beta acetal linkages that exist in cellulose.
Enzymes serves as biological protein, and it is needed in the body to carry out specific functions.
Human posses amylase which made it possible to breaks down starch that is contained in many carbohydrate food that we eat.
We can conclude that human doesn't have the enzymes that that act on complex cellulose contain in found like celery.
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What do we call the master control
genes?
A. manipulating genes
B. hox genes
C. omega genes
Answer:
Hometic genes
Explanation:
BEcause it is
Why aren’t all organisms made of just one cell ?
Explanation:
bio diversity is important in nature
cant have all species doing the same things the same way
Use the picture to summarize the difference between the daughter cells that result from mitosis and meiosis.
how were cells discovered?
Word Bank haploid, diploid
Answer: Mitosis results in two diploid cells that have the same genetic makeup. Meiosis results in four haploid cells that are all genetically different from each other.
Mitosis results in two diploid cells that have the same genetic makeup. Meiosis results in four haploid cells that are all genetically different from each other.
What is Mitosis?A kind of cell division known as mitosis occurs when a single cell (the mother) divides into two genetically identical daughter cells. Mitosis, when referring to the cell cycle, is the stage of cell division during which the DNA in the cell's nucleus is divided into two identical sets of chromosomes.
Mitosis is used in the vast majority of cell divisions that take place in your body. Mitosis fills an organism's body with cells during development and growth, and it replaces old, worn-out cells with new ones over the course of an organism's existence.
Mitotic divisions are a type of reproduction for single-celled eukaryotes like yeast, resulting in the generation of new members of the population.
Therefore, Mitosis results in two diploid cells that have the same genetic makeup. Meiosis results in four haploid cells that are all genetically different from each other.
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Fossil fuels are very abundant and cost efficient in general true or false
Answer:
False
Explanation:
what does the path of an object look like when it is in uniform motion??
Answer:
The path of an object looks like line, zigzag line and curve
Answer:
In uniform motion, the object moves along a straight path i.e. the path of object is a straight line.
The diagram below shows four living organisms. Which statement about the organisms shown is accurate? *
A) They are all single celled and have similar organs.
B) They are all single celled and have identical organs.
C) They are all multicellular and have similar organs.
D) They are all multicellular and have identical organs.
Answer:
D) the are all multicellular and have identical organs.
Explanation:
bcs all the above picture organisms are complex therefore, they will be multicellular for eg: human being we also multicellular.and each of them have identical organ
By what means has the overuse of antibiotics in medicine and agriculture lead to the current global problem of antibiotic resistance?
The overuse of antibiotics significantly increases the bacterial mutation rate, causing more antibiotic-resistance mutations to occur.
Humans develop an immunity to antibiotics, rendering them ineffective.
Indiscriminant use of antibiotics selects for resistant bacteria and increases their numbers.
Antibiotic resistance is a fabricated problem used to sell newer and more expensive antibiotics.
Answer:
Sorry I don't know
Explanation:
Because I think so its not of my class and BTW can I know ur name?
Okk
A dollar weed species has become resistant to a particular weed killer. What happens to the percentage of dollar weed offspring that survive weed killer treatments in future generations?
Answer:
A. The percentage will increase
Explanation:
If the species is becoming resistant to the weed killer, natural selection will cause future generations to become resistant as well, therefore the percentage of resistant dollar weed will increase. Also I took the test lol.
How many trophic levels do most food webs have? Why? Relate your answer to the appropriate law of thermodynamics
Answer:
Most food webs have between 4 and 5 trophic levels
Explanation:
Energy flow: From the whole quantity of energy that reaches the earth's surface, autotroph organisms or producers only absorb 0.1 or 1%.
From the input of solar energy begins a unidirectional energy flow. It passes through all the organisms in the ecosystem, from autotrophs to heterotrophs, until it is eventually dissipated in the environment.
There is an energy transfer from each trophic level to the next, and each level only uses 10% of this energy. This assessment is called "The 10% rule". As a general rule, only about 10% of the energy stored as biomass at one trophic level, per unit time, ends up as biomass at the next trophic level, in the same unit of time. The rest of the energy is used by the organisms in their own metabolism or dissipated as heat to the environment.
The progressive reduction of energy determines the number of trophic levels, which, in general, turns to be between 4 and 5.
Images that you see in your peripheral vision are not as sharp as those directly in front of you because: there is a higher concentration of cone cells in the center of the retina in an area called the fovea. there are fewer rod cells in areas of the retina where images from the periphery are focused. the lens cannot focus images well on areas of the retina where images from the periphery are projected. the rod cells in the periphery are sensitive to blue and green light only.
Answer:
The correct answer is ''there is a higher concentration of cone cells in the center of the retina in an area called the fovea.''
Explanation:
The fovea, the central area of the macula, is the area of the retina where the vision of details is the most accurate. It is located in the extension of the optic axis of the eye. The fovea is populated only with cones, and allows us the best optical resolution, the field of vision that occurs around the central focus / outside the center of the field of vision (fovea) is known as peripheral vision, it is related to the location and recognition of the visual information that is around the object on which we fix our attention. That is, it is one that uses the peripheral area of the retina and that gives rise to the field of vision that surrounds the point where the sight is fixed / allows us to see the environment that surrounds us in a general way.
why do you think cells have different functions?
what are the many forms of energy? how is energy either potential of kinetic
Answer:
The different types of energy include thermal energy, radiant energy, chemical energy, nuclear energy, electrical energy, motion energy, sound energy, elastic energy and gravitational energy.
You need energy to do any work, which is why the ability to do any work is energy. Read that again. Potential and kinetic energy are two forms of energy that can be converted into each other. Potential energy can be converted to kinetic energy and vice versa.
Explanation:
15 points bc I’m broke
Answer:
Add comparative anatomy and it should be right.
Explanation:
Elijah goes to sleep while his intestines digest his supper. His intestine is a type of _.
A. voluntary muscle
B. involuntary muscle
C. cardiac muscle
Answer:
B) Involuntary
Explanation:
Intestines are involuntary muscles that help food move through the digestive tract without thinking twice.
Which of the following is NOT true? *
Enzymes can breakdown/build products
All lifeforms use enzymes
Enzymes are proteins
Enzymes are used up after catalyzing a reaction; enzymes may only be used once
Explain why Point A is younger than the rest of the sandstone layer. (Hint: look at the key)
Answer:
Point A is younger
Explanation:
Point A is on an extrusion. A extrusion that also forms on layers on top of the layer the question asks for, is definitely younger. It reaches all of the way to the 1st layer, yhe Breccia layer.
True or False: Most of the nitrogen on Earth is found in the atmosphere.
(NO LINKS PLS AND GIVING BRAINLIEST)!!
What does an author give texture, sound, and motivation to in order to bring it to life?
dialogue
setting
character
perspective
HELP!!! DONT SEND NO LINK, IT DONT WORK!!!!
Explain why harmful mutations tend to disappear, while beneficial mutations become
widespread.
Answer:
Harmful mutations don't accumulate over time because they reduce the reproductive success of an organism! These mutations would be dead before they can produce any offspring, so there's a slim chance of their genes being passed on. (So it's basically like survival of the fittest, the ones that survive usually have beneficial mutations because that's what keeps them alive lol) Beneficial mutations play a big role in evolution too!
Explanation:
I hope that cleared things up for you! pls give me brainliset <3
If a person had A blood type, then the antigen found on the RBC would be
A) A antigen
B) B Antigen
C) A and B Antigen
D) No antigens
Answer:
A antigen
Explanation:
Natural selection involves change in a(n) _______ over time
environment
individual
population
mutation
Which term describes resistance to change in motion? A. Acceleration B. Inertia C. Net force D. Velocity
Answer:
Inertia
Explanation:
Inertia is the resistance of any physical object to any change in its velocity. This includes changes to the object's speed, or direction of motion.
If a red blood cell is placed in a solution that has a concentration gradient higher than the red blood cell, this type of solution is called --
Answer:
Hypertonic solution
Explanation:
A hypertonic solution is where the concentration outside of the cell is greater when compared to the inside of the cell.
If a red blood cell is placed in a solution that has a concentration gradient higher than the red blood cell, this type of solution is called - hypotonic solution.
Hypotonic solution is the one that contains more concentration as compared to the concentration in the cytoplasm of cells. It means that a solution contains more water as compared to the water within the cell.
molecules move from their higher concentration to their lower concentrationIt is called osmosisWater molecules always try to balance their concentration on both sides.When an animal cell, such as a red blood cell, gets water to the hypotonic solution, it swells.Thus, If a red blood cell is placed in a solution that has a concentration gradient higher than the red blood cell, this type of solution is called - hypotonic solution.
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The act of preserving or maintaining a resource?