Evolution is the process by which different kinds of living organism are believed to have developed from earlier forms during the history of the earth.
EvolutionEvolution can be defined as the change in the characteristics of a species over several generations. Evolution occurs when evolutionary processes such as natural selection and genetic drift act on this variation, resulting in certain characteristics becoming more common or rare within a population.
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a ???? has definite shape and volume.
-plasma
-solid
-liquid
-gas
Answer: Solid
Explanation: The rest of the options don't have a definite shape nor volume.
Answer:
solids
Explanation:
liquids have a definite volume but bot the shape and gases have neither
You are a genetic counselor. A couple comes to you for advice. The female is pregnant with their first child. Both have family histories with Tay-Sachs disease, which is a disorder that progressively destroys nerve cells, leading to loss of motor skills, vision, and hearing. The disease is an autosomal recessive pattern. Which of the following statements is true?
The child will likely have Tay-Sachs disease if both parents pass on the recessive alleles.
The child will likely have Tay-Sachs disease if both parents pass on the dominant alleles.
The child will only have Tay-Sachs disease if the mother passes on the recessive allele.
The child will likely have Tay-Sachs disease if the father passes on the dominant allele.
Answer:
The answer is B: The child will likely have Tay-Sachs disease if both parents pass on the dominant alleles.
Explanation:
Brainliest pls!!
Answer:
The child will likely have Tay-Sachs disease if both parents pass on the recessive alleles.
Explanation:
With autosomal recessive diseases, if the offspring recieves two recessive alleles, they will exhibit the trait.
What are cilia and why are they important in the respiratory system?
Answer:
sorry I know that cilia Are the locomotory structure of paramecium I don't know according to the respiratory system but for paramecium, it creates a current in gullet and helps the microbes to engulf the food
what does genetic drift mean ?
Answer:
variation in the relative frequency of different genotypes in a small population, owing to the chance disappearance of particular genes as individuals die or do not reproduce.
Explanation:
have a nice day!!!!!!!!
Answer:
Genetic drift- variation in the relative frequency of different genotypes in a small population, owing to the chance disappearance of particular genes as individuals
Explain
Look up genetic drift and look at the videos
help ill mark brainlist i guess just help
Most body cells undergo mitosis, but there are a couple of tissues in the body whose cells do not. Name one of those types of cells.
HELP ASAP
Answer:
Adult stem cells
Explanation: Some very specialized somatic cells such as cardiac muscle cells, nerve cells, and red blood cells do not undergo mitosis.
In which era did human history begin?
A
Cenozoic
B
Paleozoic
С
Cambrian
D
Precambrian
E
Mesozoic
Answer:
Prehistoric
Explanation:
The Prehistoric Period—or when there was human life before records documented human activity—roughly dates from 2.5 million years ago to 1,200 B.C. It is generally categorized in three archaeological periods: the Stone Age, Bronze Age and Iron Age.
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The pedigree below tracks the presence of dimples through a family's generation. Having dimples is an autosomal dominant trait.
If individuals II-1 and II-2 have a fourth child, what is the probability that the child will have dimples?
Choose 1 answer:
(Choice A)
A
25%
(Choice B)
B
50%
(Choice C)
C
75%
(Choice D)
D
100%
Answer:
It's 50%
Explanation:
I just did it right.
Answer:
50%
Explanation:
answer on khan
Identify the different types of RNA and sections of RNA.
all answers will be used
messenger RNA
ribosomal RNA
transfer RNA
introns
exons
double-stranded RNA
codons
anticodons
Carries copies of the instructions for assembling proteins:
Makes up the subunits of ribosomes.
Carries amino acids and matches them to the coded message for assembling proteins:
Sections of an mRNA molecule that are removed
Sections of an mRNA molecule that are not removed, and are joined together to form the completed molecule:
Answer:
Carries copies of the instructions for assembling proteins: messenger RNA
Makes up the subunits of ribosomes: ribosomal RNA
Carries amino acids and matches them to the coded message for assembling proteins: transfer RNA
sections of an mRNA molecule that are removed: introns
Sections of an mRNA molecule that are not removed, and are joined together to form the completed molecule: exons
The different types of RNA and sections of RNA are :
Carries copies of the instructions for assembling proteins: messenger RNAMakes up the subunits of ribosomes: ribosomal RNACarries amino acids and matches them to the coded message for assembling proteins: transfer RNAsections of an mRNA molecule that are removed: intronsSections of an mRNA molecule that are not removed, and are joined together to form the completed molecule: exonsRibonucleic acid (RNA)Ribonucleic acid (RNA) is a molecule comparable to DNA.
Not at all like DNA, RNA is single-stranded.
An RNA strand features a spine made of substituting sugar (ribose) and phosphate bunches.
Each sugar is one of four bases- adenine (A), uracil (U), cytosine (C), or guanine (G).
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PLS HELP!! look at photo!
Answer:
Explanation:
The answers are as follows in respective order to as the blanks are listed:
1. 6
2. 1
3. 7
4. 2
5. 3
6. 4
7. 5
Why are nonrenewable resources used even when renewable resources might be available
Answer:
Why are nonrenewable resources used even when renewable resources might be available? At times, renewable resource use might be less efficient and more expensive than the use of nonrenewable resources.
Explanation:
Non-renewable resources are used very frequently in today's world. nonrenewable resources are used even when renewable resources might be available to cutoff the price and it is more effective.
What is the reason for using non-renewable resources?Nearly, 80 percent of the total amount of energy used each year is from fossil fuels.
Many of the works are dependent on fossil fuels due to they are energy-rich and relatively cheap to process.
Renewable resources can be sometimes less efficient and more expensive than the use of nonrenewable resources.
Thus, these factors can lead to the use of nonrenewable resources even when the option to use renewable resources is available.
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Many rain forest plants are prone to developing fungal infections on their leaves. Fungi can grow rapidly in moist environments, and a serious infection can kill plants. One rain forest plant species has a genetic variation that affects its leaf structure. The traits and the descriptions of the plant’s leaves are listed in the chart.
Description
Trait A: medium-tip leaves Leaves are narrower toward the tips, but don't come to a full point. Most of the water drains from the leaves.
Trait B: drip-tip leaves Leaves come to a sharp point, leading to thorough water drainage from the leaves.
Trait C: wide-tip leaves Water runs onto the leaves and tends to pool in pockets at the tips.
During natural selection, organisms with harmful traits are less likely to successfully reproduce than organisms with beneficial traits. Neutral traits don’t improve or hurt an organism’s chances for survival. So, they tend to persist in populations when environmental conditions are stable. If the environment changes, neutral traits could become harmful or beneficial depending on the situation.
In year 1, a population of rain forest plants has the following distribution: 50% have medium-tip leaves, 25% have wide-tip leaves, and 25% have drip-tip leaves. You will simulate three years of this population: year 1, year 5, and year 10. How will the trait distribution most likely change over this time?
Year 1: 50% medium-tip leaves / 25% wide-tip leaves / 25% drip-tip leaves
Year 5: 40% medium-tip leaves /40% wide-tip leaves / 20% drip-tip leaves
Year 10: 30% medium-tip leaves /55% wide-tip leaves / 15% drip-tip leaves
I suppose medium-tip leaves become much less over the years is due to the fact withinside the description it says "Most of the water drains from the leaves." And as we recognize fungus likes cool and humid weather. Let us suppose that this plant is large and lives in a completely humid forest, and due to the fact the leaves can not keep water, a maximum of the water might pass at the floor subsequent to it. As we recognize vegetation that might be tall might have an extended shadow, and a fungus can develop below the plant due to the water maintains leaking thru the leaves, the humid temperature, and the shadow of the plant.
Next, I suppose that the wide-tip leaves will maximum probably be capable of living on higher is due to the fact whilst it rains maximum of the water will visit the middle or stem of the plant. (Like withinside the aloe vera plant there may be a bit socket withinside the center of the plant for water to move whilst it rains.) This approach that there might not be as lots water dripping out into the soil. Therefore this means that the soil won't be watery sufficient for a fungus to develop.
Finally, I suppose the drip-tip leaves might be 2nd for the maximum probable capability of life on is due to the fact despite the fact that the rain will usually pass into the soil, however, a few will nonetheless pass into the plant. I'm now no longer pronouncing that the medium-tip depart might not however I suppose that the drip-tip depart might capture extra rain than the medium-tip depart.
What are fungal infections of plants?
It generally causes stress. it is caused by soil, seed, weeds are spread by wind and water.
Hence it concludes that rainforest plants are prone to developing fungal infections on their leaves.
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How old is the Moon?
Answer: its 4.53 billion years old..
Explanation:
7. To what Super group does the ameba belong? Mark as brainliest first to get correct.
Answer:
Answer: Rhizaria Supergroup
A cross between black a chicken (BB) and a white chicken (WW) produces offspring that
are speckled (BW). This type of inheritance is known as
Answer:
The answer is codominace. :)
Explanation:
Which best describes an advantage the offspring of a flowering plant would have by
reproducing asexually?
A. Reproduction would occur quickly
B. Mating compatibility would improve
C. Reproduction competition would increase
D. Diversity between generations would increase
Help please!! I'll name you brainliest!!
Answer:
ok :)
Explanation:
1. T
2. T
3. F
4. T
5. F
6. T
7. T
The half-life of a radioactive element, such as carbon-14, is the time it takes for half of the atoms of the element to decay. How many half-life periods have passed if a fossil contains 1 32 of the original amount of carbon-14?
Answer:
This half-life represents the time in which the number of radioactive nuclei falls to 1/2 of its starting value. Activity, being proportional to the number of active nuclei, also has the same half-life. Life of all the radioactive elements is infinite. Radioactive decay constant 'λ', of different elements different.
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Answer:its 5
Explanation:
Predict the results if promoters were not part of the transcription process. Please explain in detail!
Answer:
In genetics, a promoter is a protein-binding DNA sequence that initiates the transcription of a single RNA from the DNA downstream. This RNA can encode proteins, or it can have mobile functions, such as tRNA, mRNA, or rRNA. The promoter is near the starting site of gene transcription, upstream of the DNA (towards the 5 'region of the sense strands). The promoters can consist of about 100–1000 pairs
Explanation:
#semogamembantu
Help me with these questions
1. Translation takes place in the _______ on a _______
2. What is the point of translation?
3. Transcription and translation together is the process of ________?
Answer:
1. ribosomes; AUG Codon;
Explanation:
2. Translation is the process of translating the sequence of a messenger RNA (mRNA) molecule to a sequence of amino acids during protein synthesis. The genetic code describes the relationship between the sequence of base pairs in a gene and the corresponding amino acid sequence that it encodes.
3. gene expression
How many species of horsetails are there?
10
40
20
30
25
Answer:
Here is your ans
Explanation:
15 species of horsetails are there
Tq
Before entering the Krebs cycle, an intermediate molecule bonds to a 2-carbon molecule. This intermediate complex enters into the Krebs cycle, and combines with a 4-carbon molecule to form citric acid. The name of this molecule is _____.
Answer:
The link reaction occurs after glycolysis and before the Krebs cycle. It begins with pyruvate, which loses a carbon as carbon dioxide is formed - leaving a 2-carbon molecule. The link reaction terminates with the production of acetyl coenzyme A.
Explanation:
PLEASE HELP .!!! ILL GIVE BRAINLIEST.. *EXRTA POINTS* .. DONT SKIP :(( !
ILL GIVE 40 POINTS .
Answer:
C
Explanation:
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All cells have the SAME genes. True/False
Provide an example of this in humans: answer here
Answer:
Almost all of the cells in your body share the same DNA so false deku here! :3
Explanation:
Answer:
False.
Explanation:
All cells do NOT have the same genes due to genetic variation. The reason we have different genes for different cells is to allow the cells to do different things, otherwise all cells would perform the same function.
What is gas exchange?
Answer:
Gas exchange is the physical process by which gases move passively by diffusion across a surface. For example, this surface might be the air/water interface of a water body, the surface of a gas
If an organelle is selectively
permeable what can we
infer about its function?
A. The organelle allows molecules to
pass through easily.
B. The organelle doesn't allow any
molecules to pass through.
C. The organelle. allows some
molecules to pass through.
D. The organelle allows large
molecules to pass through easily.
the correct answer there is C.
can someone help me with this question
Answer:
D
Explanation:
It depends on the activities the humans are doing
Answer:
D. both A and B
Explanation:
Human activities can do pollutions and others don't
Bio mass requires a lot of space, is this an advantage or disadvantage?
Answer:
i think disadvantage
Explanation:
Write a sentence or draw a diagram to relate these words: cell, tissue, and organ.
Answer:
Here
Explanation:
In this simple food chain, the grass is eaten by the grasshopper which is eaten by the snake which is eaten by the hawk
Using the above scenario, which of these would have the largest amount of available energy?
A)
grass
B)
grasshopper
snake
D)
hawk
[ D.] hawk
Explanation:
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