Answer:
Test/Back Cross ( a method used to determine the unknown genotype of organsm by crossing it with recessive phenotype)
Answer:
[tex]beinggreat78~here~to~help![/tex]
The term is called a test-cross. This method is used to determine the genotype of someone whose genotype is unknown. For instance, we can see the person's eye color, which is Hazel, but we cannot identify which genotype they have because they have mixed eye colors. You would have to test or back cross to discover their genotype.
Ethnopharmacology is a subdiscipline in the field of ethnomedicine. Identify what someone within the ethnopharmacology field might do during their research.
In which situation has the precautionary principle been least strictly applied?
A chain of health stores is allowed to sell over-the-counter nutritional supplements that
have not been tested by the Food and Drug Administration for adverse effects.
A foreign marketplace relaxes certain restrictions on genetically modified produce after
testing demonstrates that the produce poses no health risks to consumers.
A toy company recalls a particular brand of action figure after several young children nearly
die from choking on loose pieces of plastic.
The U. S. Government requires that cigarette manufacturers include on cigarette packages a
warning from the surgeon general that smoking causes diseases such as lung cancer
The precautionary principle is invoked after there has been established that there is risk in the use of a product.
What is the precautionary principle ?The precautionary principle is invoked when it is supposed that a particular product or a drug could put the lives of people at risk. This has been invoked many times in the health sector.
The situation in which the precautionary principle is least strictly applied is when a chain of health stores is allowed to sell over-the-counter nutritional supplements that have not been tested by the Food and Drug Administration for adverse effects.
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5) The Texas Hill Country, located in central Texas, is home to the Edwards Plateau ecoregion and Llano Uplift ecoregion. Since the Edwards Plateau is composed of large amounts of limestone rock
formations with a vast underground cave system. What is likely the cause of the underground cave system?
A) wind erosion
B) chemical weathering
physical-weathering
D) deposition and compaction
Answer:Its C
Explanation: i took the test trust me
physical-weathering is likely the cause of the underground cave system.
Rocks, minerals, and soils disintegrate through a process known as physical weathering, sometimes known as mechanical weathering.
Abrasion is the main physical weathering process (the process by which clasts and other particles are reduced in size). Temperature, pressure, frost, root movement, and burrowing animals can all cause physical weathering.
For instance, physical weathering will expose more surface area through the use of cracks, speeding up the pace of deterioration.
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5. Warm currents cause what type of climate?
a. Dry
b. Wet
c. Frigid
Answer:
b. dry
Explanation:
because the dry climate is warm
Pls help ASAP WILL GIVE BRAINLIEST 100POINTS!
True or False: A trait is only considered an adaptation if it is beneficial to the organisms current environment
Answer:
this statement is false:
Explanation:
natural selection is a process im which organism evolve to become better adapted to their environment
crick originally thought that each type of nitrogenous base hydrogen bonded with its self (A-A, T-T, etc.) why was this incorrect? what makes this impossible?
Assess It!
A disease has spread
amongst lily pads in a
pond ecosystem.
Which is true about the
impact of this disease?
A Small fish that rely on lily pads for
protection will decrease in population
The large fish population will increase
C. The water temperature will decrease
D. The frog population will increase
Answer:
The small fish populus will decrease because they need the lilypads to hid them from the big fish.
Explanation:
Single-celled plantlike protists and photosynthetic bacteria make up communities of.
How are spores similar to seeds?
Answer:
Spores grow and spread, similar to seeds, yet only in a larger amount.
__________________________________________________________
Questions?Ask in the comments box.
Which of the followingdoes NOT affect population growth and decline?
a. the immigration of organisms
b. the emigration rate
c. the fraction of males to females
d. the birth rate and death rate
Energy for use in our cells are stored in the form of
1) chemical bond energy
2) physical energy
3) heat energy
4) mechanical energy
Answer:chemical bond energy
Explanation:weegy
The sky of early Earth was probably pinkish-orange. As life became established, the sky turned blue. What was responsible for the color change?
45. What process in the nitrogen cycle on this planet is taking place in the purple
growth cells?
Answer:
When an organism excretes waste or dies, the nitrogen in its tissues is in the form of organic nitrogen (e.g. amino acids, DNA). Various fungi and prokaryotes then decompose the tissue and release inorganic nitrogen back into the ecosystem as ammonia in the process known as ammonification.
Explanation:
According to the articles, how did the sequencing of the human genome impact our ability to understand human evolution and natural selection?.
Answer:
whole genome sequencing allows us to examine evolution at the phenotypic level, and gives us a testable way to predict how environmental impacts will shape future phenotypes.
Monosaccharides disaccharides and polysaccharides are examples of.
Answer:
Sugars
Explanation:
Saccharide is another term used to describe sugars. The prefixes (mono = one, di = two, poly = more than two) represent how many glucose molecules are present in the overall molecule. Glucose is the base structure of sugars. Furthermore, all saccharides (sugars) are carbohydrates.
Helium has an atomic number of two because it has two ____________ . A atoms B protons C neutrons D molecules
Answer:
The answer to that question is A
During translation, amino acids are carried to the ribosome by.
Answer:
tRNA
Explanation:
Please Help! This is due in 5 minutes!
Whose work showed that the fossils in caves were, in fact, a result of accumulation over time rather than the result of one cataclysmic event?
A. Gideon Mantell
B. William Buckland
C. Charles Lyell
D. Richard Owen
Answer:
C. Charles Lyell
Explanation:
Lyell argued that the formation of Earth's crust took place through countless small changes occurring over vast periods of time, all according to known natural laws.
1. Predict: What do you think the offspring of a black mouse and a white mouse will look like?
A type of speciation that involves the development of several species, each adapted to a specific environment, from a common ancestor is called _________.
Answer: It's called adaptive radiation. Hope this helps!
How many chloroplasts are present in a typical plant cell?
Answer:
10-100 chloroplasts
Explanation:
an animal can wound a tree by scratching away the bark. the tree can respond to the wound in many ways. the sap quickly covers the wound, and then the tree covers the wound with new growth. the diagram shows the cross section of a tree with a healed wound. what process worked most directly with a transport section to heal the wound?
Cellular reproduction is the process which worked most directly with a transport section to heal the wound.
What is Cellular reproduction?
This involves producing a copy of preexisting cells through the process of cell division known as mitosis.
The plant when injured yields multiple cells which covers it up and helps in the healing process.
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True or False (Please help me asap)
1. CAM plants use organic acids to store their CO2 for use in light reactions
2. Phase 3 of the Calvin cycle involves the reduction of 3-phosphoglycerate to G3P.
3. in C3 plants, rubisco fixes oxygen if no CO2
4. Photosystem II can operate independently of photosystem I in a cyclic .
5. Carotenoids may act as a sort of energy buffer or “sunscreen” for plants.
6. Chlorophyll b has a methyl group at the R-position of the porphyrin ring.
7. Cyclic electron flow is the primary pathway of energy transformation in light reactions.
In this question, we will answer whether the statement is false or true about plants.
False or true1. CAM plants use organic acids to store their CO2 for use in light reactions
False
2. Phase 3 of the Calvin cycle involves the reduction of 3-phosphoglycerate to G3P.
False
3. in C3 plants, rubisco fixes oxygen if there is no CO2
True
4. Photosystem II can operate independently of photosystem I in a cyclic fashion.
True
5. Carotenoids can act as a kind of energy buffer or “sunscreen” for plants.
True
6. Chlorophyll b has a methyl group at the R-position of the porphyrin ring.
False
7. The cyclic flow of electrons is the main way of transforming energy in light reactions.
True
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Which of the following is a negative consequence of nuclear power that concerns many environmentalists?
A
electrical shocks
B
carbon emissions
C
nuclear waste
D
smog
During prophase I, all four chromatids of the two homologues become closely associated as a result of pairing, forming a structure known as a(n)
During prophase I, all four chromatids of the two homologues become closely associated as a result of pairing, forming a structure known as a tetrad or bivalent.
What is a tetrad?A tetrad is a structure formed during the prophase I stage of meiosis I whereby two homologous chromosomes pair together.
Meiosis occurs in two stages of division namely;
meiosis I meiosis IIIn meiosis I, homologous chromosomes are separated but are first paired during the prophase stage to form the tetrad or bivalent structure.
Therefore, during prophase I, all four chromatids of the two homologues become closely associated as a result of pairing, forming a structure known as a tetrad or bivalent.
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What part of the nucleotide connects in
the middle of the molecule and makes up
the "steps" of the ladder?
Answer: The inside of the molecule, the "steps" of the staircase, are made of the nucleotide bases Cytosine, Guanine, Adenine, and Thymine. C bonds to G by three hydrogen bonds. A bonds to T by two hydrogen bonds. A and G are double ringed structures called "purines".
Explanation:
What type of physical weathering is caused by the expansion of water?
Answer:
Frost wedging
Explanation:
Is a natural result of the fact that water expands when it freezes.
is the following sentence true or false? Changes in chromatin structure and histone DNA binding are associated with changes in gene activity.
Answer: The correted answer is true
Explanation:
Changes in chromatin structure and histone DNA binding are associated with changes in gene activity. True)
How does continental drift theory explain extinction of organisms?
Answer:
He argues that the “dance of continents”-the break-up, movement, collision and re-formation of continents through time-creates the basic geographic and climatic conditions which drive the decline and extinction of species.
Explanation: