2)
A homeowner lives adjacent to some wetlands, which contain standing water for much of the year. During the summer months, the
mosquitoes in the area are excessive and pose a nuisance to the homeowner. The homeowner decides to spray an insecticide on
the lawn and adjacent wetlands to eradicate the mosquitoes. The homeowner notices that after the application of the insecticide,
the number of mosquitoes is significantly reduced.
The following year, the number of mosquitoes increases in frequency as the summer months arrive and the temperatures get
warmer. The homeowner once again applies the same insecticide to the yard and adjacent wetland areas. However, this time, the
homeowner does not notice a reduction in the mosquito population after applying the chemical.
Evaluate the scenario above and select ALL statement below that apply to this case study.
A)
B)
The insecticide no longer has a chemical that can kill any mosquitoes after
the first year.
The application of the insecticide caused directional selection in the
mosquito population
There were some mosquitoes with innate genetic resistance to the
insecticide before it was sprayed the first time.
C)
D)
Natural selection selects for a phenotype in a population that has an
advantage under certain environmental pressure.
E)
The application of the insecticide caused individual mosquitoes to mutate,
which made them resistance to the chemical.
Answer: B, C, and D
Explanation:
The application of the insecticide caused directional selection in the mosquito population. There were some mosquitoes with innate genetic resistance to the insecticide before it was sprayed the first time. Natural selection selects for a phenotype in a population that has an advantage under certain environmental pressure. The correct options are B, C, and D.
What is case study?A case study is defined as 'an intensive study of a person, a group of people, or a unit with the goal of generalizing across several units'.
A case study has also been defined as a focused, systematic investigation of a single person, group, or community.
The insecticide application resulted in directional selection in the mosquito population. Before the insecticide was sprayed for the first time, some mosquitos developed innate genetic resistance to it.
Natural selection favors phenotypes in a population that have an advantage under certain environmental conditions.
Thus, B, C, and D are correct options.
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Which of the following causes genetic recombination? Select all that apply.
Multiple select question.
A)
independent assortment
B)
crossing over
C)
segregation
D)
alleles
Answer:
It's (B) crossing over and (D) alleles.
I hope it helps.
Explanation:
Describe a solar eclipse and when it occurs
Please select the word from the list that best fits the definition
movement of molecules from an area where there are many to an area where there are few
Answer:
Diffusion
is the movement of molecules from an area where there are many to an area where there are few
Hope it helps
PLS HELP WILL GIVE BRAINLIEST
CHECK ALL THAT APPLY
The athletic trainer's role is always supplemental to the physician's course of action.
a. True
O b. False
Choose all the answers that apply.
Which of the following energy sources harms the
environment?
A.) coal
B.) hydroelectric power
C.) nuclear power
D.) oil
Answer:
c nuclear power because it destroy the places
A species of organism has 6 pairs of homologous chromosomes. Which of the following would be the total number of possible chromosomal combinations in a zygote of the species?
A. 256 (2^8)
B. 4096 (2^12)
C. 128 (2^7)
D. 1024 (2^9)
E. 64 (2^6)
name the consumers:
scavengers, omnivores, herbivores, carnivores
Answer:
Jaguars and frog are carnivorous, lizard is omnivorous, whereas sloth, monkey and butterfly
Explanation:
Jaguars, frog, lizards, are carnivorous which feeds on meat of other organism whereas sloth, monkey and butterfly are herbivorous which feeds on plants. Jaguar feeds on Capybaras, deer, tortoises, fish, birds and monkeys etc, frog feeds on insects and lizard also eats insects as well as plants so it is omnivorous while on the other hand, sloth lives on the trees so feed on plants, butterfly feeds on flower's nectar and monkey feeds on the fruits present on the trees.
What is a gene? HELP PLEASE
Answer:
Option A is correct
Explanation:
Gene is the basic unit of heredityGene is actually a sequence of nucleotides in the DNA.Termed by JohanssonPart of DNA having information for translationLinearly arranged on the chromosome.Present on a particular locus on the chromosome.Every person has 2 copies of each gene, one inherited from each parent.is the experience of losing a loved one and
is the emotional reaction to the loss.
grief; bereavement
bereavement; grief
widowing; distress
bereavement; solitude
Answer:
grief , bereavement
b/c the definition of grief is the experience of losing a loved one
Answer:
grisf breavement is the correct answer
it means the emotional situation of loosing a loved one
hope it is helpful to you
What has been the effect of globalization on agriculture?
O Broader teams are formed in the scientific community
O Crops are infested with new species of pests.
O The demand for food has exceeded the possible output
O A new market of food products has emerged.
broader teams are formed in the scientific community
Which structure in the heart'separates
oxygenated blood from deoxygenated blood?
Answer:
pericardium
Explanation:
A double-walled membrane, the pericardium, separates the right and left chambers, preventing oxygen-rich blood from mixing up with the one without oxygen. So, the heart functions go smoothly. Deoxygenated blood enters the right atrium.
Why do cells use fat and starch for long term energy storage instead of atp molecules
Answer:
because it is hard to breakdown fat in a very short time while ATP can be broken down in a very short time.Fats have a very strong bond of molecular chains and this makes it hard to breakdown quickly
Which of the following parent combinations could result in a type o blooded child?
Answer:
1 parent heterozygous A and 1 parent heterozygous B
Explanation:
One parent already has O and then the other is AB so its not a full dominate
1 parent heterozygous A and 1 parent heterozygous B could result in a type O blooded child. So, the correct option is D.
What is Blood group?A blood type is defined as a classification of blood that is based on the presence and absence of antibodies and inherited antigenic substances on the surface of red blood cells. These antigens can be proteins, carbohydrates, glycoproteins, or glycolipids, depending on the blood group system.
There are 4 main blood groups which are- A, B, AB and O. Blood group is determined by the genes inherited from the parents. Each group can be RhD positive or RhD negative, which means there are 8 blood groups in total.
For the above example, when Heterozygous A blood group parents crossbreed with Heterozygous B blood group parents that is AO and BO respectively. AB, BO, AO and OO blood groups from the cross produce offspring.
Thus, 1 parent heterozygous A and 1 parent heterozygous B could result in a type O blooded child. So, the correct option is D.
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which statement is correct about the polarity of a water molecule
Answer:
Water is Polar
Explanation:
There is no overall charge to a water molecule, but there is a slight positive charge on each hydrogen atom and slight negative charge on the oxygen atom.
The process of meiosis is illustrated here. The outcome of meiosis is very important in the sexual reproduction and life cycle of
diploid organisms. Evaluate these statements and determine which ones accurately describe the outcome of meiosis. You may select
ALL that apply.
-)
A)
Meiosis produces genetically diverse cells.
B)
Meiosis increases genetic variation in the offspring.
C)
Meiosis produces haploid cells from a diploid parent cell
D)
Meiosis increases the genetic content in the daughter cells.
E)
Meiosis maintains the number of chromosomes originally present in the
parent cell.
Answer:
A) Meiosis produces genetically diverse cells.
B) Meiosis increases genetic variation in the offspring.
C) Meiosis produces haploid cells from a diploid parent cell
Explanation:
Through crossing over, meiosis produces genetically diverse cells causing more genetic variation of offspring. The Daughter cells in meiosis are formed from a diploid cell that has all 46 chromosomes, however the daughter cells are haploids as they need to join with the other gamete to have a full set of chromosomes.
What is the slowest moving weather front. Why
is it so slow?
Answer:
Cold fronts
Explanation:
Which gas is increasing in content and causing concern about the Earth's energy
budget?
Carbon Dioxide
Nitrogen Gas
Argon Gas
CFC gases
Answer:
Carbon Dioxide
Explanation:
Answer:
Carbon Dioxide
Explanation:
animals and humans breath in air and they create carbon dioxide which trees need so it's good but people use factory and stuff that makes mass carbon dioxide which is not good.
3. Some organelles are present in both plant and animal cells. Each organelle performs a different
function. Which of the functions listed below are performed by organelles found in both plants
and animals?
Answer:
Organelles that are present in both forms of eukaryotic cells are the following :
Nucleus
Endoplasmic Reticulum
Ribosomal units
Golgi apparatus
Lysosomes
Perixosomes
Mitochondrion
Cytoskeleton/Cytosol
Vacuole
Nucleolus
Plasma membrane
Microtubules/Microfilaments
All celluar functions corresponding to the organelles can be found in both plant and animal cells
Explanation:
plz make me the brainliest
I NEED HELP, can someone make do this real quick?
Answer:
The answer is A because abc
what is breathing and respiration?
BREATHING:
Breathing is the process of moving air out in the lungs to facilitate gas exchange with the internal environment,mostly to flush out carbon dioxide and bring in oxygen.
RESPIRATION:
In physiology, respiration is the movement of oxygen from the outside environment to the cells within tissues, and the removal of carbon dioxide in the opposite direction.
Hope it Will be helpful to you.
What is a Beaver’s tail used for
Answer:
The tail is used as a rudder in swimming, as a balance prop while working on land and to signal danger when slapped on the water. Beavers will also store fat in their tails, eating more in the fall so they can survive off the fat stored in their tails through winter if food is not available.
Explanation:
Helicase is an enzyme responsible for unwinding the double helix of the DNA by breaking apart the hydrogen bonds between each of the base pairs. Which phase of the cell cycle is helicase most likely active? s M G1 G1
Answer:
G1 Phase
Explanation:
Jobs in agriculture have varying degrees of necessary education and experience.
O True
O False
Answer:
True
Explanation:
Agriculture has a misconception of just being farmers with no education- that is untrue. Farmers are required to know many things in order to preform in their job. You also need people to maintain and repair the equipment, someone to keep track of the seeds, etc. There are many Ag careers and majors in college.
Jack bought a small turtle. Three months later, the turtle had grown to twice its original size. Which of the following statements best describes why Jack's turtle got bigger?
Answer:
he feeds his turtle then it ggrows
Explanation:
You suggest using a logistic growth model instead. Your colleague agrees, and recommends harvesting the bass population down to just under carrying capacity. Their argument is that the population will remain large and population growth will be fastest if it is harvested down to this size. A) Why is this argument incorrect
Answer and Explanation:
The error of this argument is to state that a population will remain large and increase when it is close to the carrying capacity. This is because the carrying capacity is the term that determines that a population of living beings is living in an environment that has the minimum resources for their survival, because that population has already consumed the resources. In this case, when a bass population comes close to carrying capacity, the amount of environmental resources is starting to become scarce or limited, this will cause a decrease in the size of the population, because many members of the population will not have access to the necessary resources and will die, decreasing the population. In addition, reproduction among members of the population will be reduced, which will prevent the population from remaining large, since the mortality rate will be higher than the birth rate.
100 POINTS PLEASE ANSWER!
What tone would you use to read a speech on the scientific methods of climate change in Africa?
a. persuasive
B. formal
C. Scientific
d. sorrow
Please select the best answer from the choices provided.
Answer:
B
Explanation:
A formal tone due to the fact that a formal tone helps establish the writer's respect for the audience and suggests that the writer is serious about his or her topic. It is the kind of tone that educated people use when communicating with other educated people. Most academic writing uses a formal tone.
how did natural disasters affect animal populations?
Answer:
When disasters hit, animals experience the same terrible effects as people: injury, starvation, thirst, displacement, illness and stress. We move fast to protect animals affected by earthquakes, floods, typhoons and other disasters. We provide food, water, medical care, and other emergency assistance to animals in need
Explanation:
Why human cell is consider as eukaryotic cell where as bacteria cell as prokaryotic cell?