Answer:
Each gamete comprises half of the organism's chromosomes, or genetic material. As a result, each sperm carries 50% of the father's genes and each egg carries 50% of the mother's genes. This distinguishes gametes from other cells in the body.
Explanation:
An organism that reproduces using binary fission, a type of asexual reproduction, creates an identical copy of a cell when
Answer: An organism that reproduces using binary fission, a type of asexual reproduction, creates an identical copy of a cell when the cell's DNA replicates and the cell divides, giving each cell an identical copy of DNA
Answer:
C.
the cell's DNA replicates and the cell divides, giving each cell an identical copy of DNA.
Explanation:
How can we get liquid water on mars
Answer:
Through metal tanks with our strongest metal (tungsten)
Explanation:
if we started transfering over many tanks of it through rockets we could start an area that will be filled with the water. to keep the water from changing because of the new climate build a big round roof that is made out of Polycarbonate.
Solar tracking, or _____, is a plant's growth toward light.
What is a cell?
a. The smallest unit of the atom
b. The smallest unit of life
c. The largest unit of life
d. The smallest unit of a
population
Answer:
b
Explanation:
Answer the following questions in full sentences and paragraphs, using at least 150 words, in the essay box below.
1. Which organisms are carnivores? Herbivores? Omnivores?
2. If the ecosystem is balanced, which populations should be the largest? The smallest?
3. Imagine a group of hunters kills half of the rabbit population. How will the other organisms be affected?
4. Imagine disease kills 85 percent of the wolf population. How will the other organisms be affected?
5. Imagine a foreign mountain lion species is introduced into the ecosystem. How will the other organisms be affected?
Answer:
1. Lions are carnivores, deers are herbivorous, and foxes are omnivores
2. The herbivorous should be the largest the omnivores should be next and the smallest should be the carnivores
3. The carnivores will start to disappear since there is no more food for them
4. There will be more herbivorous since there will be no more predators
5. There will be less herbivorous and increase in the population of that species since they don't have any enemies at that ecosystem
Explanation:
6. The cells produced via meiosis are called:
O a) sex cells
I b) somatic cells
O c) body cells
0 d) skin cells
The cells produced via meiosis are called gamete cells, such as sperm cells or egg cells. Hence option a is correct.
What is meiosis ?In sexually reproducing organisms, meiosis is a kind of cell division that results in a reduction in the number of chromosomes in gametes (the sex cells, or egg and sperm). Body or somatic cells in humans are diploid, meaning they have two sets of chromosomes one from each parent.
The egg and sperm that combine during fertilizations must be haploid, or having just one pair of chromosomes, in order to sustain this condition. Each diploid cell divides twice during meiosis to produce four haploid daughter cells, which are the gametes.
Meiosis is characterized by DNA replication, two rounds of cell division, and the production of four daughter cells, each of which has half as many chromosomes as the parent cell. Meiosis I and Meiosis II are the names of the two meiotic divisions.
Each chromosome's DNA is copied during the S phase of the cell cycle, resulting in two identical sister chromatids that are kept together by sister chromatid cohesion before meiosis starts.
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The main difference between an ecosystem and a community is-
in an ecosystem, everything works together for everyone to be able to survive in a community everyone just lives together and it`s their choice whether or not they get along
Hope this helps ✨ - Six
T A C---G A T---A C C---A T G Find the mRNA strand
Answer:
AUG-CUA-UGG-UAC
Explanation:
that should be it, when translated to mrna A codes for U, T codes for A, C codes for G and G codes for C. I hope this helps
what r the 5 sensory organs
Answer:
Explanation:
Much of this information comes through the sensory organs: the eyes, ears, nose, tongue, and skin. Specialized cells and tissues within these organs receive raw stimuli and translate them into signals the nervous system can use.
Answer:
Eyes, skin, ears, nose, and tongue.
BRAINIEST ANSWER:)
It’s either TRUE or FALSE
15. According to Hamilton's rule, the natural selection favors altruism when rB>C, where ris
coefficient of relatedness (fraction of genes shared), B is benefit, the average number of extra
offspring that the recipient of an altruistic act produces, and C is cost, how many fewer offspring
the altruist produces. Let's say that members of species X produce 4 offspring on average.
Individual A of species X is in a perilous situation that will result in its death if the individual A
does not get help. First cousin of individual A decides to risk its own life in order to save
Individual A. what would be maximum risk of death for the cousin, in order for altruistic act to
be favored by natural selection?
A) 6 2596
B) 12.5%
C) 25%
D)50.
step by step explain:
Answer:
Hamilton's rule, mathematical formula that supports the notion that natural selection favors genetic success, not reproductive success per sea. But by the recipient of the altruism, ℂ is the cost (in number of offspring equivalents) suffered. The altruistic behaviour, and r is the genetic relatedness of the altruist to the beneficiary.
Explanation:
I am not fursure on what your answer would be but I hope that what I put can help you find your answer.
Why are sea otters considered a keystone species? Why are they important?
because of the crucial ecological role they play in maintaining the health and stability of the nearshore marine ecosystem. It is important because without sea otters,sea urchins can overpopulate the sea floor and devour the kelp forest that provide cover and food for many other marine.
An item that reflects only blue light?
Answer:
The sun
Explanation:
That's how the sky is blue.
If you watch a cell undergo mitosis, how can you tell the process is finished?
Group of answer choices
1.telophase and cytokinesis occur; a new cell membrane forms between the two daughter cells
2.anaphase occurs and the daughter chromosomes are pulled to the cell’s poles
4.prophase begins and the chromosomes appear
5.metaphase begins and the chromosomes line up along the equatorial plate
Ice, wind, water, gravity, plants, and animals are ALL causes of...
a) Chemical weathering
b) Mechanical weathering
c) Oxidation
d) Mass movement
Answer:
B) Mechanical Weathering
Explanation:
why doesn't ice evaporate?
Answer:
Ice doesnt evaporate because it melts.
Explanation:
Alana cuts down a large number of trees so that she can see the ocean from her porch. Which of the following
describes why this is harmful?
The trees provided essential shade to her garden.
The trees were blocking harmful ultraviolet rays from the sun.
Cutting down trees adds to soil erosion and affects air quality.
The trees were not native to the land and can never be replaced.
Answer:
Cutting down trees adds to soil erosion and affects air quality, Maybe?
1. Why is DNA extracted from biological samples?
Well Basically if you and your family members are biological meaning related to each other it would make sense to take samples from them. And also in families there is always someone who inherit looks and the same blood like for example you may look like your dad and have the same blood type as him. ;) your welcome
Answer:
The ability to extract DNA is of primary importance to studying the genetic causes of disease and for the development of diagnostics and drugs.
Explanation:
Because continental crust undergoes heating and cooling cycles that lower its density, what do you expect to occur when oceanic and continental crust collide at a plate boundary?
Using the Am!n0 Acids Chart, c0de the pr0tein pr0duced from the DNA strand A T G G G G C T C A G C G A C.
Answer:
Nucleotide sequence: ATG-GGG-CTC-AGC-GAC
Translation: Methionine-Glycine-Leucine-Serine-Aspartic acid (abbreviation: MGLSD)
Explanation:
The genetic code refers to the universal rules by which cells decodes information encoded within genetic material, either DNA or the resulting messenger RNA (mRNA), into proteins. In the genetic code, each triplet of nucleotide bases or 'codon' in the DNA/RNA sequence determines a specific amino acid in the protein. The AUG codon in mRNA is a start codon that specifies Methionine (M) amino acid, while UAG, UAA, and UGA are stop codons that determine the end of the protein.
How would the finch populations on these islands change over time?
The finch population's beaks will be modified; on dry islands, they will have larger beaks, while on rainy islands, they will prefer medium or short beaks.
What is natural selection?Natural selection is an evolutionary mechanism. Organisms that are better adapted to their surroundings are more likely to survive and pass on the genes that helped them thrive. Species change and diverge as a result of this process.
Because of the differences in environmental conditions, the finch populations on the dry and wet islands are likely to change differently over time.
Finches with traits that allow them to efficiently extract nutrients from dry seeds would have an advantage on the dry island, where food and water resources are limited.
Natural selection would favour these traits over time, increasing the frequency of these advantageous traits within the dry island finch population.
Thus, this way, the finch populations on these islands change over time.
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Your question seems incomplete, the probable complete question is:
Most scientists think that a small group of finches colonized the Galápagos Islands thousands of years ago. They would've been the only seed eating birds on the islands. Suppose one island was very dry and another had plentiful rainfall.
A. How would the finch populations on these islands change over time?
Organisms that make their own food are called ____________.
a red blood cell and plant root hair cell both have
Answer:
The job of both red blood cells and root hair cells is absorption. Red blood cells absorb oxygen through pulmonary veins and their capillaries in the lungs. Root hair cells, on the other hand, absorb water from the soil and transport them to adjoining cells for photosynthesis purposes.
Huntington’s disease (HD) is prevalent South Africa. Most of the families with HD have Dutch or British ancestry, which suggests they inherited the European HD allele. HD is believed to have first arrived in South Africa more than 300 years ago when Dutch colonists settled into the Western Cape in the 1600s. Thus, the prevalence of HD in South Africa is the result of the founder effect.
Mutations in the HTT gene cause Huntington’s disease. The HTT gene provides instructions for making a protein called huntintin. This protein plays a role in nerve cells in the brain. The HTT mutation that causes HD involves a DNA segment known as a CAG trinucleotide repeat. This segment is made up of a series of three DNA building blocks that appear multiple times in a row. Normally, the CAG segment is repeated 10 to 35 times within the gene. In people with HD, the CAG segment is repeated 36 to more than 120 times. An increase in the size of the CAG segment leads to the production of an abnormally long version of the huntintin protein. This causes the dysfunction and eventual death of neurons in certain areas of the brain. The more repeats, the more serious the disease is.
HD is inherited in an autosomal dominant pattern. There is both an adult onset (after reproductive age) and a juvenile onset pattern. People with adult onset typically have 40 to 50 repeats, while people with the juvenile form tend to have more than 60 repeats. Individuals who have 27 to 35 repeats do not develop HD, but they are at risk of having children who will develop the disorder. As the gene is passed on to offspring, the size of the repeat may lengthen into the range associated with HD.
Predict what will happen to the allele frequencies for Huntington’s disease in South Africa if there were a new mutation to the HTT gene that causes a reduction to the CAG trinucleotide repeat. Justify your prediction with evidence. Your response should include links to the sources of information gathered.
Answer:
If there were a new mutation to the HTT gene that causes a reduction to the CAG trinucleotide repeat, the allele frequency for Huntington's disease would decrease in South Africa. HD is caused by too many repeats of the CAG segment causing an abnormally long version of the huntintin protein which becomes deadly. so if the number of repeats is reduced then the person is more likely to not have Huntington's disease. If they do still develop Huntington's disease, it will be more likely to be adult onset and they will still have an opportunity to reproduce offspring which may carry the trait for reduced CAG.
If a new mutation in the HTT gene were to cause a reduction in the CAG trinucleotide repeat, the allele frequencies for HD in South Africa would likely decrease over time.
What is mutation?A mutation is a change in the nucleic acid sequence of an organism's, virus's, or extrachromosomal DNA's genome. Viral genomes can be made up of either DNA or RNA.
If a new mutation in the HTT gene caused a decrease in the CAG trinucleotide repeat, HD allele frequencies in South Africa would likely decrease over time. This is due to the fact that reducing the size of the CAG segment would result in a lower risk of developing HD.
Individuals with CAG repeats in the range of 27-35 do not develop HD, but they may pass on the mutated allele to their offspring, who may develop the disorder if the CAG repeat size exceeds 35.
Therefore, if a new mutation were to arise that reduces the size of the CAG repeat, individuals who carry the mutated allele would be less likely to pass it on to their offspring.
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Once the light organ is colonized, the squid no longer takes in Vibrio fischeri or other bacteria from the environment. Explain how a sufficiently large population of bacteria can be maintained in the light organ to produce light.
Answer:
Due to suitable conditions.
Explanation:
Large population of bacteria can be maintained in the light organ to produce light by providing suitable conditions for growth and development in the organ. The luminescent genes are off when the organ has low cell density while on the other hand, when the density of cell is high in the light organ the luminescent genes automatically turned on and light up the organ. These Vibrio fischeri needs habitat and food for their growth and survival which is provided by the squid. If there is sufficient food for the squid, the population of Vibrio fischeri increases in the light organ.
Is this correct if not what is correct answer
Answer:
C. Matter is cycled through within an ecosystem, and energy at each trophic level is changed to heat energy.
Explanation:
An ecosystem can be defined as the natural living habitats of both living and non-living organisms. Essential services such as plant pollination, water purification, nutrient cycling, etc., that are being provided by the ecosystem are really very vital, important and useful for the sustenance of life, both for humans and enhances social welfare.
In science, matter can be defined as anything that has mass and occupies space. Any physical object that is found on earth is typically composed of matter. Matter are known to be made up of atoms and as a result has the property of existing in states.
Energy can be defined as the ability (capacity) to do work. The various forms of energy are solar energy, electrical energy, chemical energy, thermal energy, wind energy, nuclear energy, heat energy, etc.
During cellular respiration, living organisms use organic matter which are transformed back to carbon dioxide, minerals and water while heat is transferred.
Hence, the response which best describes how matter and energy is cycled through the ecosystem is that; matter is cycled through within an ecosystem, and energy at each trophic level is changed to heat energy.
How are genetic modification and artificial selection similar?
Both result from human influences.
Both result from natural selection.
Both involve hybridization.
Both involve crossbreeding.
A. Both result from human influences.
Genetic modification and artificial selection are similar because both these techniques are the result of human influences.
What do you mean by Genetic modification?Genetic modification may be defined as a set of processes derived from organisms whose genetic material (DNA) has been modified in a way that does not occur naturally.
Artificial selection is also defined by human interference and hence desired traits are carried forward that give advantages and high yield productivity to humans.
Therefore, Genetic modification and artificial selection are similar because both these techniques are the result of human influences.
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Which one ? Please HURRY i only have 1 hour, 8 min left
Answer:
A dying star
Explanation:
What is Theory and law
Answer:
laws describe what will happen in a given situation as demonstrable by a mathematical equation, whereas theories describe how the phenomenon happens.
Explanation:
mark brainliest plzzz
Law predicts what happens and theory proposes why.
Eutrophication results in the death of trout and other fish as a result of toxic pH levels in the water toxic pH levels in the water A asphyxiation from lack of oxygen asphyxiation from lack of oxygen B toxic levels of mercury in the water toxic levels of mercury in the water C toxic concentrations of salt in the water toxic concentrations of salt in the water D a lack of sufficient minerals in the water
Answer: A
Explanation:
