Answer:
Mutation and Recombination
What process puts new gene segments into the genes of a corn plant to produce a new variety of corn that is resistant to disease?
O adapting
O cloning
O genetic engineering
O selective breeding
Answer:
selective breeding............
Genetic engineering allows the modification in the DNA of an organism. To obtain a disease free plant, genetic engineering is carried out. Thus, option c is the correct answer.
What is genetic engineering?Genetic engineering is a tool used in biotechnology to bring modifications or alterations in the genetic material - DNA of an organism. It modifies the DNA through addition of a gene segment or deletion of a gene.
In genetic engineering process, a specific gene of interest or the desired genetic sequence is selected. It then inserted into a cloning vector to allow its replication in the host gene. The so called 'recombinant' then formed is inserted into the host through various insertion techniques.
Genetic engineering thus allows the selection of a disease free plant, pest resistance or temperature resistant plant. A new variety of the plant can be obtained through genetic engineering.
The genome of an organism can thus be edited where the unhealthy genes can be eliminated through genetic engineering.
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What are the differences in DNA and RNA in terms of structures and nitrogenous bases?
Answer: DNA is a long polymer with deoxyriboses and phosphate backbone. Having four different nitrogenous bases: adenine, guanine, cytosine and thymine. RNA is a polymer with a ribose and phosphate backbone. Four different nitrogenous bases: adenine, guanine, cytosine, and uracil.
Explanation:
Answer: DNA is a long polymer with deoxyriboses and a phosphate backbone. Having four different nitrogenous bases: adenine, guanine, cytosine, and thymine. RNA is a polymer with a ribose and phosphate backbone.
Explanation:
9. Oldfield mice (Peromyscus polionotus, also called beach mice) in the southeastern United States belong to a different genus than rock pocket mice (Chaetodipus intermedius). Oldfield mice from the mainland live in areas with dark soils. These mice mostly have dark fur. Populations of the same species that live on the white beaches of Florida and Alabama have light fur. Describe the evidence you would need to collect to support the claim that the differences in color in these populations are due to natural selection.
Answer:
It is a true example of natural selection.
Explanation:
The dark colour mice lives in the dark soil of southeastern United States in large number as compared to other colour mice because this colour helps them to hide themselves from their predators in that dark soil while on the other hand, on light beaches of Florida light colour mice lives because this light colour also helps these mice in hiding from their enemy animals which is a true example of natural selection because dark colour mice can't survive in light colour beaches dude easily seen by their enemies and reduces its population by eating them.
please answer attached question!!!
Answer:
B
Explanation:
I did this and got it right
What is a chromosome and what is its relationship to DNA?
Answer:
hi
Explanation:
please help.........
Answer:
i thinks its a, so sorry if im wrong :/
Explanation:
what are some of the structures inside a cell that help it to live and perform its role in an organism?
Answer:
hat are some of the structures inside a cell that help it to live and perform its role in an organism? mitochondria - makes ATP, lysome - digest bad things, nucleus - contains DNA ribosomes - synthesize proteins 2. ... Plant cells have a large central vacuoles, animal cells do not.
Explanation:
What was the most important gas contributed by stromatolites?
a. carbon dioxide
b. nitrogen
c. ammonia
d. oxygen
Oxygen was the most important gas contributed by stromatolites. Thus, the correct option is D.
What are Stromatolites?Stromatolites may be defined as rock or microbial reefs that are formed by cyanobacteria (blue-green algae).
Stromatolites are responsible for the oxygenation of the atmosphere. Blue-green algae fed off carbon dioxide and convert it into the marine sediments known as Stromatolites.
Therefore, the correct option for this question is D.
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Answer:
I hope this helps.
Explanation:
bedbugs are small insects that live in and around the bedding of humans and feed on humans at night. Their bites cause redness, itching, swelling at the site of the injury. They can be small and difficult to see during the day when the linens are cleaned. In order to remove bedbugs, an insecticidal agent is often used. In this case, pyrethroid was chemically added to a population of bedbugs. The number of bedbugs in the infestation was significantly reduced. However, over time, the bedbug population rebounded and further application of the pyrethroid was not successful. Evaluate which statements describe occured with the bedbugs and select all that apply.
Answer:
The bedbugs began to die, but then they mutated to become immune to the chemical being used on them, so then they were able to regain their population. Most of the time, in order to get rid of bedbugs, people just burn their mattress' because bedbugs mutate and become immune fast becase their life cycle is so short.
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The bedbugs started to die, but even then they altered to become resistant to the chemical that was being used upon them, allowing them to repopulate.
Define bedbugs.Bedbugs can be transported from contaminated locations or secondhand furniture. They can be found in luggage, handbags, backpacks, and other things that are placed on cushioned or soft surfaces.
The bedbugs started to die, but even then they altered to become resistant to the chemical that was being used upon them, allowing them to repopulate. Because bedbugs evolve and grow immune quickly due to their short life span, the majority of the time, people just fire their mattresses to get clear of them.
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Devise a way to remember each stage of mitosis. Propose one word or a short phrase that describes each stage and also starts with the same letter as the name of that stage, for example, Telophase-Two nuclei
Devise a way to remember each stage of mitosis and the correct way to learn is PMAT and the full form of the PMAT is P- prophase - chromosomes appear - P, M- metaphase - chromosomes in Middle - M, A- anaphase - chromatids moved Away - A, and T- telophase - Two new cells -T.
What is mitosis?Mitosis has been defined as the process by which the cell divided it has been chromosome and then to separate them and the identical nuclei that has been produced for the preparation of the division of the cell. During the process of the mitosis as a single cell divided into the identical daughter cell.
There are four stage of the mitosis and these are mentioned below:
1- Prophase
The first stage of the mitosis in which the size of the chromosome has became the short and thicken in the shape.
2- Metaphase
This is known as the second stage of the mitosis in which the chromosome lies in the mid of the cell.
3- Anaphase
During this stage of the mitosis has been chromatides will break and they have to move to the opposite poles.
4- Telophase
Telophase has been known as the last stage of the mitosis in which two nuclei formed.
Therefore, Devise as way to remember each stage of mitosis and the correct way to learn is PMAT and the full form of the PMAT is P- prophase - chromosomes appear - P, M- metaphase - chromosomes in Middle - M, A- anaphase - chromatids moved Away - A, and T- telophase - Two new cells -T.
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You are studying the bacteria in the water of a nearby pond. From a 100 mL sample, you use a 0.5 mL subsample to inoculate a plastic dish filled with a semi solid nutrient medium that fosters growth of coliform bacteria. After an appropriate incubation period, you count 100 bacterial colonies growing on the surface of the medium. What conclusion can you make about the coliform bacteria in the pond water
Answer:
There are 20,000 colony forming units of coliform per 100 mL of the pond water.
Explanation:
0.5 mL of the 100 mL sample was inoculated.
There were 100 colonies in the 0.5 mL of the sample.
Hence, the number of colonies that would be in the 100 mL can be calculated as:
100 colonies = 0.5 mL
x = 100 mL
x = 100 x 100/0.5
= 20,000 colonies
Hence, the conclusion that can be made is that there were 20,000 CFU (colony forming units) of coliform bacteria in a 100 mL sample of the pond water.
A scientist recently discovered a brand new organism. The organism is multicellular, is eukaryotic, and is a heterotroph Which kingdom may this organism belong to?
Kingdom Archaebacteria
0 Kingdom Animalia
O Kingdom Plantae
O Kingdom Eubacteria
Answer:
Kingdom Animalia
Explanation:
Being a eukaryote will eliminate Kingdom Archaebacteria and Kingdom Eubacteria, since those are bacteria and prokaryotes. Being a heterotroph (break down complex organic structures for nutrition) will eliminate Kingdom Plantae, since plants are autotrophs (makes nutritional organic substances from inorganic substances-the process of photosynthesis). Therefore the answer is Kingdom Animalia
Answer:
Kingdom Animalia
Explanation:
I got it correct
A man with type AB blood is married to a woman also with type AB blood. Show the cross
by completing the Punnett Square below.
Answer:
they have a high chance of being related
Explanation:
The world's high rate of coal consumption is causing many negative impacts
on the environment. Solving this problem involves a combination of different
tactics. Which of the following is not a conservation tactic that would help
solve the problems related to coal consumption?
O A. Exploring new sources of coal deposits
OB. Replanting forests
O C. Finding ways to use less electricity
O D. Building more wind and solar power plants
Exploring new sources of coal depositsAnswer:
Explanation:
sry if im wrong
What genetic trait allows organisms to survive natural selection in their
environments?
Answer:
Adaptations
Explanation:
Which of the following increases the amount of water in the atmosphere
Answer:
Transpiration
Explanation:
This is the process of water evaporating from plants into the atmosphere.
Gina and her friends postponed their trip to the movies
because a thunderstorm was brewing, Gina helped her
mother with the laundry, Christopher decided to follow
the updates about the thunderstorm on his computer,
Rodney took a shower, and Pablo read a book in his
room. Which person would likely be the most safe from the
thunderstorm?
O Gina
O Christopher
Rodney
0 Pablo
Answer:
Pablo i think
Explanation:
edg2021 i dk if its right though
Answer:
im pretty sure its pablo <3
also, HAPPY PRIDE MONTH!!i hope your month goes fantastic
22)
The Master answered, "Never fail to comply."
Fan Ch'ih was driving. The Master told him about the interview, saying, "Meng-sun asked me about being filial. I answered,
"Never fail to comply."
Fan Ch'in asked, What does that mean?
The Master said, When your parents are alive, comply with the rites in serving them; when they die, comply with the rites in
burying them; comply with the rites in sacrificing to them.'
Analects II, 5
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Which principle of Confucianism does this support?
A)
Virtue
B)
Social Order
Mandate of Heaven
D)
Ancestor Veneration
23)
The start of the Korean War in 195
Answer:
D
Explanation:
Plzzz help I’m sooo confusseeddd
Answer:
Explanation:
allows more people to be president
what's the function of the lungs
Answer:
correct
Explanation:
Your lungs are part of the respiratory system, a group of organs and tissues that work together to help you breathe. The respiratory system's main job is to move fresh air into your body while removing waste gases.
help me please
proteins are large polymers that are used for many functions, list three
Give some 4 common treatment for cAncer?????
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Surgery, radiation, chemotherapy and hormone therapy can all be used to relieve symptoms. Other medications may relieve symptoms such as pain and shortness of breath. Palliative treatment can be used at the same time as other treatments intended to cure your cancer.
thankshope it helpsDr. Nachman and his colleagues collected rock pocket mice across 35 kilometers of the Arizona Sonoran Desert, which included both dark, rocky lava outcrops and light, rocky, granite areas. They recorded substrate color, and coat-color frequencies for each location. Each site was separated from any of the others by at least eight kilometers. The researchers trapped a total of 275 mice. Their data are summarized below (numbers have been slightly modified for the purposes of this worksheet).
Field Data Summary
Collecting Site Substrate Color Number of Mice Phenotype Light Dark
1 Dark 22 3 19
2 Light 80 74 6
3 Light 22 19 3
4 Dark 28 3 25
5 Light 58 25 33
6 Dark 65 9 56
1. Calculate the overall frequencies of light-colored mice and dark-colored mice caught on light-colored substrates. [to 3 decimal places]
2. Calculate the overall frequencies of light-colored mice and dark-colored mice caught on dark-colored substrates. (to 3 decimal places)
3. Using the Hardy-Weinberg equation and data from the table above, determine the frequency of the three genotypes on the light, rocky, granite substrate. For genotype frequencies use three decimal places and for calculations using the allele frequencies, you must round the allele frequencies to two decimal places.
4. Using the Hardy-Weinberg equation and data from the table above, determine the frequency of the three genotypes on the dark, rocky lava substrate. (to 3 decimals). For genotype frequencies use three decimal places and for calculations using the allele frequencies, you must round the allele frequencies to two decimal places.
5. Which fur color seems to have the greatest overall selective advantage? Use data collected from both dark-colored and light- colored substrates to support your answer.
6.What environmental change gave a selective advantage for one coat color over another?
7. In a separate study, 76 rock pocket mice were collected from four different, widely separated areas of dark lava rock. One collecting site was in Arizona. The other three were in New Mexico. Dr. Nachman and colleagues observed no significant differences in the color of the rocks in the four locations sampled. However, the dark-colored mice from the three New Mexico locations were slightly darker than the dark-colored mice from the Arizona population. The entire Mc1r gene was sequenced in all 76 of the mice collected. The mutations responsible for the dark fur color in the Arizona mice were absent from the three different populations of New Mexico mice. No Mc1r mutations were associated with dark fur color in the New Mexico populations. These findings suggest that adaptive dark coloration has occurred at least twice in the rock pocket mouse and that these similar phenotypic changes have different genetic bases. How does this study support the concept that natural selection is not random?
8. To determine if the rock pocket mouse population is evolving, explain why it is necessary to collect fur color frequency data over a period of many years.
Answer:
1)
frequencies of light-colored mice ≅ 0.74 frequencies of dark-colored mice ≅ 0.262)
frequencies of light-colored mice ≅ 0.13 frequencies of dark-colored mice ≅ 0.873)
p² ≅ 0.02q² ≅ 0.742pq ≅ 0.244)
q² = 0.13 p² = 0.4 2pq = 0.465) The dark-colored fur seems to have the greatest overall selective advantage
6) Dark lava changed the color of the substrate, from light to dark.
7) Because to produce dark color, animals from the different regions suffered different mutations that drove them to have almost the same dark fur color.
8) To see if the mice population is evolving. If it is, there will be a change in the allelic and genotypic frequencies over the years. If it is not evolving, the frequencies will keep equal through the years.
Explanation:
Due to technical problems, you will find the complete explanation in the attached files
Where does Dobson unit used in ?????
Answer: ozone concentration
Explanation: The Dobson Unit is the most common unit for measuring ozone concentration. Becuse ozone concentration is hard to measure they use The Dobson Unit.
Dobson unit used in atmospheric ozone.
What is a resource that is used up faster than it can be replenished?
A renewable resource
B solar energy
C non-renewable resource
D wind energy
Answer:
C non-renewable resource
Explanation:
solar energy and wind energy are both renewable resources, which means that there is enough resources to be utilized, the wind, sunlight, etc. Non-renewable resources like fossil fuels take a really long time to be replenished and they are often harmful to the environment.
10. The Northeast region of the US is working on harnessing tidal power.
A. true
B. false
Answer:
I think false is your answer ☺️☺️. If I'm right so,
Please mark me as brainliest. thanks!!!
Answer:
true
Explanation:
Which word describes organisms in the Kingdom of bacteria
A. Multicellular
B. Prokaryote
C. Unicellular
D. Eukaryote
Answer:
d) eukaryote
Explanation:
all fungi are eukaryotic in nature
Whare does digestion of starch begins?
Answer:
Mouth
Explanation:
The saliva supplies moisture, carbohydrate-digesting enzyme and amylase.
5000+1000+500+50 what is its answer
Answer:
6550
Explanation:
That is the sum and you can also use a calculator to find the sum
According to cell theory which activity is impossible?
a) Skin cells forming from sunlight.
b) Ribosomes being present in eukaryotes
c) Liver cells forming from liver cells
d) Prokaryotes existing by themselves
a) Skin cells forming from sunlight.
According to cell theory, cells forming by themselves is impossible. They can only be formed when another cell divides.
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