Answer:
Two heterozygous parents have a 50% chance of contributing one of their alleles to each offspring.
Explanation:
Individuals who are heterozygous for a specific trait have two different alleles in the gene that determines that trait. This characteristic makes their chances of contributing each of their alleles to the offspring 50%.
The alleles of a gene are distributed in the gametes by the process of meiosis, which results in daughter cells with half the genetic charge, so each gamete can only have one copy of the allelic pair of a gene.
On the other hand, if an individual has two equal alleles for a characteristic in a gene, he has a 100% chance of passing that allele on to his descendants.
Which of the following best explains the endosymbiosis theory of how eukaryotic cells originated, as shown below? A.Eukaryotic cells developed from mutations in prokaryotic cells
B.Eukaryotic cells developed from organic compounds carried to Earth by debris from space
C.Eukaryotic cells originated from a combination of gases and heat in the atmosphere
D. Eukaryotic cells were originally large prokaryotic cells that absorbed smaller prokaryotic cells
Answer:I’m sure the answer is D
Explanation:
All eukaryotes evolved from prokaryotes and eventually developed into mitochondrial organelles.
The endosymbiotic theory represents that some of the organelles in eukaryotic cells were prokaryotic microbes at some time. As per the endosymbiosis theory the eukaryotic cells were at first large prokaryotic cells that absorbed smaller prokaryotic cells.
What is endosymbiosis?Endosymbiosis is the engulfing of the cell by another one to produce, over time, a coevolved relationship in which none of the cell could survive alone.
It is an evolutionary theory that guides the origin of eukaryotic cells by prokaryotes.
Eukaryotic cells were previously large prokaryotic cells that actually absorbed smaller prokaryotic cells
Thus, the correct option is D.
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Plz the answer quickly
Answer:
d. Pluripotency markers
Explanation:
Pluripotency can be defined as the capacity of individual cells to differentiate into any cell type. Pluripotent transcription factors are pluripotent proteins that promote the differentiation of embryonic stem cells (ESCs) into stem/progenitor cells by inducing the expression of target genes, which are also capable of maintaining their pluripotent state. For example, SOX2, OCT4 and NANOG are pluripotent transcription factors highly expressed in ESCs in order to maintain the pluripotent state of these cells.
What is one condition that barnacles need to keep balanced?
Which of the following is part of the structure of a fruit? glume monocot mesocarp cotyledon
Answer:
Mesocarp
Explanation:
Describe how radiation fog forms.
Answer:
Radiation fog forms in the evening when heat absorbed by the Earth's surface during the day is radiated into the air. As heat is transferred from the ground to the air, water droplets form. Sometimes people use the term “ground fog” to refer to radiation fog.
I THINK ;)
Answer:
Radiation fog forms in the evening when heat absorbed by the Earth's surface during the day is radiated into the air.
Dr. Robert Hazen has worked to develop a hypothesis that explains
the origin of life on Earth. His work has focused on hydrothermal vents, which are cracks in the ocean floor. Water heated by molten rock beneath the crust escapes from these vents at very high temperatures, producing hot, high-pressure environments at the vents on the ocean floor.
In order to provide evidence that these vents may be areas where life originated, which of the following states a null hypothesis Hazen might have used to begin his research?
(A) Organic molecules were transported to the hydrothermal vents via a meteorite, thereby seeding them with precursors for more complex molecules.
(B) The temperatures and pressures found in hydrothermal vents resemble conditions described in currently accepted origins of life hypotheses.
(C) Organic waste sinking to the ocean floor would have used the unique hot water environment as an energy source to begin manufacturing food.
(D) Chemosynthetic organisms can best develop in the hydrothermal environment, manufacturing nutrients for other living things to feed on.
Answer:
(B) The temperatures and pressures found in hydrothermal vents resemble conditions described in currently accepted origins of life hypotheses
Explanation:
We are told that Dr. Hazen wants to develop a hypothesis that explains
the origin of life on Earth.
Now, he focused on hydrothermal vents. That Water heated by molten rock beneath the crust escapes from these vents at very high temperatures, producing hot, high-pressure environments at the vents on the ocean floor.
This means the null hypothesis will be temperatures and pressures found in this initial condition he described while any other different from it will be the alternative hypothesis.
Looking at all the given options and comparing with the initial hypothesis conditions in the question, the correct answer is option B.
The origin of life can be seen as the natural process in which the origin of living things happen through non-living matter or smaller organic compound.
The null hypothesis is:
(B) The temperatures and pressures found in hydrothermal vents matches the conditions described in currently accepted origins of life hypotheses.
The null hypothesis for Dr. Robert Hazen hypothesisThe hypothesis says that hydrothermal vents are cracks in the ocean floor.It also states that there were high temperatures and high pressure environment.Thus, the option (B) The temperatures and pressures found in hydrothermal vents matches the conditions described in currently accepted origins of life hypotheses is the best null hypothesis for Dr. hazen to begin his research.
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Tell me one thing you know about replication.
Answer:
DNA replication is the process by which a double-stranded DNA molecule is copied to produce two identical DNA molecules. Replication is an essential process because, whenever a cell divides, the two new daughter cells must contain the same genetic information, or DNA, as the parent cell.
Thats one thing ;)
1) In yeast signal transduction, a yeast cell releases a mating factor which
A) acts back on the same cell that secreted the mating factor, changing its development
B) passes through the membranes of neighboring cells, binds to DNA, and initiates transcription
C) binds to receptors on the membranes of other types of yeast cells
D) diffuses through the membranes of distant cells, causing them to produce factors that initiate
long-distance migrations
In yeast signal transduction, a yeast cell releases a mating factor that diffuses through the membranes of distant cells, causing them to produce factors that initiate long-distance migrations. Thus, the correct option for this question is D.
What is the mechanism of reproduction in yeast?The mechanism of reproduction is yeast is processed through the process of budding which is a type of asexual reproduction. In this mechanism, A bud is a tiny protrusion from the parent cell that pinches off and produces a new individual when it reaches maturity.
Yeast is a single-celled organism that does not have complexity in its process and functions. So, this organism performs its mechanism of reproduction and other functions through the process of diffusion.
Therefore, in yeast signal transduction, a yeast cell releases a mating factor that diffuses through the membranes of distant cells, causing them to produce factors that initiate long-distance migrations. Thus, the correct option for this question is D.
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Annie Laurie helped bring the story of the devastating
San Francisco earthquake.
Lindbergh kidnapping.
Galveston flood.
World War I.
Answer:
Galveston flood
Explanation:
Answer:
Galveston flood
Explanation:
When lizabeth remembers the marigolds, what emotions does she feel?
The value of acceleration due to gravity
on the surface of earth is:
8.9 m/s2
7.8 m/s2
9.8 m/s2
Answer:
9.8 m/s2
Explanation:
How could biotechnology lead to a decrease in the use of pesticides?
Plants can be genetically engineered through the use of biotechnology to be less susceptible to insects. This trait will make pesticide use less necessary.
This is the sample answer on edge.
This method combines the genetic productivity enhancement of plants with the management of their hazardous organisms.
How is biotechnology used?Typically, agricultural biotechnology is utilized to boost plant production productivity to reduce the use of pesticides.
In agriculture by applying biotechnology, pest management and the use of pesticides will be reduced for modified plants.
The emergence of insect-resistant plants will be accelerated by technological advancements, and with an improved grasp of biotechnological processes, the acceptance of biotechnology goods might grow.
Therefore to reduce paste management and make crop resisitance for paste biotechnology is used.
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Proteins are made in organelles called
A ribosome B Golgi bodies C DNA D Chloroplast
Answer:
A) Ribosomes
Explanation:
Proteins are made in the organelles called... RIBOSOMES.
Hope that helps
Answer:
A
Explanation:
What is one specific example of negative feedback in the human urinary system?
Answer:
Without ADH the kidneys will not save as much water and you produce large volumes of dilute urine. The level of water in your blood falls back to the typical level.
Explanation:
As the level of water in the blood falls, negative feedback makes sure that the amount of ADH will rise.
What is the function of the organelle labeled A in the diagram?
Answer:
A is pointing to the cell membrane. The cell membrane's main function is to provide protection for the cell as well as allow substances in and out of the cell due to selective permeability.
Explanation:
Some other functions:
-Endocytosis and Exocytosis
-Cell Signaling
These are the extensions of a neuron through which impulses are sent away from the cell body to other neurons, glands or muscles.
Group of answer choices
neurons
nerves
axon terminals
sensory
(65 points)
What happens in an endothermic reaction?
Answer:
In endothermic reactions, more energy is absorbed when the bonds in the reactants are broken than is released when new bonds are formed in the products. Endothermic reactions are accompanied by a decrease in temperature of the reaction mixture.
Question 4
If you have a cell that has a higher concentration of water inside the cell than
outside the cell, which direction will the water move?
1.Outside
2.Neither (I already tried this one it’s incorrect)
3.Inside
• Describe the distribution of electrons around the nucleus of an atom
Answer:
Viewed simply, electrons are arranged in shells around an atom's nucleus. Electrons closest to the nucleus will have the lowest energy. Electrons further away from the nucleus will have higher energy. ... In a more realistic model, electrons move in atomic orbitals, or subshells.
Explanation:
What factors limit and control the cell cycle?
Answer:
Many cell cycle control factors, mainly cyclins, cyclin-dependent kinases (Cdks) and cyclin-dependent kinase inhibitors (CKIs). Cyclins and Cdks activate cell cycle factors that are essential for the start of the next cell cycle phase.
Explanation:
Hope this helps
Which of the following are made of carbohydrates? (Check all that apply)
Vegetables
Bread
Fruit
Sticks
Butter
Bacon
The following are made of carbohydrates are ;
VegetablesBreadFruitButterWhat are Carbohydrates?Carbohydrates are the biomolecules that act as the primary sources of energy. When the body requires instant energy the biomolecule that is first consumed is a carbohydrate.
Vegetables are a rich source of carbohydrates for example potatoes, sweet potatoes, corn and Beetroots.
Vegetables are the major source of carbohydrates.
Thus, this could be the answer.
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FOR BRAINLIEST!! PLEASE HELP!! Older people in town who were surveyed are more likely to go on daily walks than the younger people who live in this town. What can researchers MOST likely conclude from this information?
Answer:
some older people like to go on daily walks(makes sense out of all sorry if its wrong)
Describe the cause and symptoms of Down syndrome.
The causes of down syndrome are:
The symptoms of down syndrome are:
Attached above..
What is the difference between genetic variation and an adaptation? Give an example for each.
Answer:
Adaptations are physical or behavioral traits that make an organism better suited to its environment. Heritable variation comes from random mutations. Random mutations are the initial cause of new heritable traits. For example, a rabbit can't choose to have a different fur color.
Explanation:
which animal listed below would complete this food chain?
grass ⇒ __________
A. snake
B. lion
C. hawk
D. cow
Answer:
D
Explanation:
Cows eat grass
Does our galaxy have a Moon?
Answer:
yes, our outer space has a moon
I need help help me please
Answer:
they work together to benefit
a.
What is a possible cause for a decrease in ecosystem productivity?
an increase in the biodiversity of the ecosystem
b. a decrease of the biodiversity of an ecosystem
C. the biodiversity of an ecosystem experiencing no change
d. an ecosystem becoming more stable
A decrease of the biodiversity of an ecosystem is one of the prime cause for a reduction in ecosystem productivty.
What is ecosystem productivity?Productivity in ecology signifies towards the rate of generation of biomass in an ecosystem. Generally it is articulated in units of mass per volume per unit time. A decrease in biodiversity is one of the major cause of a decrease in ecosystem productivity.
The loss of biodiversity generally takes place by five prime factors:
Invasive speciesHabitat lossOverexploitationClimate changePollutionA reduction in biodiversity results in a decrease in the stability of the ecosystem. As a change to one organism will exhibit a greater influence on the entire ecosystem.
Thus, the correct answer is option b.
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Answer: B
Explanation: edge 2020
Which landform is created when two continental plates are colliding?
A.canyon
B.mountains
C.rift valley
D.mid-ocean ridge
Answer:
C.rift valley
Explanation:
The process of counting a portion of a population of a species in a particular area and using that number to estimate the total population without physically interacting with the species is called __________.
A)
restoration
B)
mark/recapure
C)
bottlenecking
D)
sampling
E)
arcology
Answer:
sampling (d)
Answer:
D) sampling
Explanation:
A sample, in the context of scientific research and statistics, is a representative subset of a population