Answer:
See the answer below
Explanation:
A DNase is also known as deoxyribonuclease and it is an enzyme that catalyzes the degradation of deoxyribonucleic acid by cleaving the phosphodiester linkage in their structures. Thus, if the RNA is treated with a DNase before the plants are exposed to it, it will not make any difference. The plants will develop the same types of lesions as if they have been exposed to the mosaic virus.
Unlike DNase, RNase is a ribonuclease, an enzyme that is capable of carrying out catalytic degradation of ribonucleic acids. This means that if the RNA is treated with RNase before the plants are made to be exposed to it, they will not develop the lesions because the RNA would have been degraded by the enzyme.
A protease is an enzyme that degrades the structure of proteins. Treating a RNA with protease will thus have no effect on the structure of the RNA. Exposing the plants to the protease-treated RNA will make no difference. The plants will still come down with the lesions as if they have been exposed to the virus.
Meet the Johnson family. Crystal and Andre are the parents. They have four children: Scarlet, Ben, Joel, and Clarissa.
Number your answers for each question in the essay box below.
Use this table to help you answer the questions:
Answer:
Answer:
1.
a)dd
b) dd
c) 0%
2.
a) 25%
b) 75%
c) 25%
3.
a) 03
b) 0
c) tt
4.
a) FF x ff OR FF x Ff OR FF x FF
b) Because all the children have freckles
5.
a) 4:0
b) 100%
6.
a) 50%
b) Bb
c) 3 out of 6 (including parents)
Hide Assignment Information Instructions INSTRUCTIONS You are bird hunting moths (both dark and light) that live on trees. As you capture the moths most easily visible against the tree surface, the moth populations change, illustrating the effects of natural selection. In this Lab, you will: Predict the color of moth that will survive better on various colors of tree trunks. Understand how camouflage can promote survival. Explain the process of natural selection.
Answer: The theory of natural selection suggests that some members of the population of species have better advantage of others for survival in terms of better phenotypic traits.
Explanation:
According to the given situation, the moths which have color that remain undetected by me as bird has a phenotypic advantage. As I may not be able to observe them on tree trunk or bark or on leaves I can eat only those moths that can be seen through my eyes. I can capture them easily. Such moths which can change their colors in accordance with the color of the tree can camouflage me easily and I cannot observe them and consume them. This promotes their survival over those detectable moths.
A geneticist studied the genome of a child. The geneticist discovered that the genetic
material of the child had three copies of chromosome 13.
How would the geneticist learn this type of information about the child's genome?
Answer:
through karyotyping
Explanation:
The geneticist can learn information about the child's genome through karyotyping.
Karyotyping is a process of analyzing the genome of organisms by first isolating the chromosomes of the organisms after which they are paired and ordered to provide a snapshot of their entire chromosome.
Thus, through karyotyping, all the chromosome sets of organisms can be analyzed and any abnormality detected. Chromosomes that are similar can be further analyzed and discovered to be copies of each other.
Therefore, the geneticist could have learned the information of the child having three copies of chromosome 13 through karyotyping of the child's genome.
The number of students in a chess club decreased from 47 to 16. What is the percent decrease? Round
your answer to the nearest percent.
In fruit flies, curved wings (w) are recessive to the dominant straight wings (W), and ebony body (b) is recessive to the dominant gray body (B). A fly that has curved wings and ebony body is crossed with a fly that has straight wings and gray body. Of the offspring there were approximately equal numbers of straight gray, straight ebony, curved gray, curved ebony. What are the genotypes of the parents and offspring
Answer:
The correct answer =
parents : WwBb x wwbb
offspring :
WwBb, Wwbb, wwBb, and wwbb
Explanation:
It is given that the straight wings (W) is dominant over curved wings (w) and the ebony body (b) is recessive to the dominant gray body (B) and there is a cross between curved wings and ebony body and straight wings and gray body is made. The phenotypic ratio is: 1:1:1:1 for the four different phenotypes straight gray, straight ebony, curved gray, curved ebony.
It is not given the genotype of parents, however, for the curved and ebony fly, it is clear that both alleles are recessive as recessive alleles only appear in absence of the dominant allele of the trait.
For another parent, the possible genotypes can be WWBB or WwBb, however in the case of WWBB the phenotypic ratio would not be equal therefore,
crossing WwBb x wwbb
This can be represented in the form of a punnett square as below:
wb wb wb wb
WB WwBb WwBb WwBb WwBb Straight wing, Gray body
Wb Wwbb Wwbb Wwbb Wwbb Straight wing, Ebony body
wB wwBb wwBb wwBb wwBb Curved wing, Gray body
wb wwbb wwbb wwbb wwbb Curved wing, Ebony Body
The phenotypic ratio is: 1:1:1:1 for the four different phenotypes
When reproduction involves two parents, which two statements describe the
offspring?
A. Offspring are genetically identical to one parent.
B. Offspring differ genetically from both parents.
c. Offspring are genetically identical to one another.
D. Offspring differ genetically from one another
Environmental scientists calculating pollutant half-lives often define a transport rate constant that is analogous to a reaction rate constant and describes how a pollutant moves out of an ecosystem. In a study of the gasoline additive MTBE in Donner Lake, California, scientists from the University of California, Davis, found that in the summer the half-life of MTBE in the lake was 26.01 days. Assume that the transport process is first order. What was the transport rate constant of MTBE out of Donner Lake during the study
Answer:
k ≈ [tex]2.7 *10^{-2} d^{-1}[/tex]
Explanation:
For a first order reaction
Half life ( [tex]t_{1/2}[/tex] ) = 0.693 / k
k = rate constant
[tex]t_{1/2}[/tex] = 26.01
hence k = 0.693 / ( 26.01)
k ≈ 2.7 * 10^-2 d^-1
This is a detailed simple solution as required
Which change is an environmental effect of farming?
a.temperature increase
b.soil erosion
c.habitat succession
d.natural disasters
Answer:
it is probably b.
Explanation:
hope this helps :)
this is the outer part of the earth and contains the crust and upper mantel
Which argument is BEST supported by the
information given?
A. The earthworm and lizard evolved at the same
time because of the absence of legs and hair.
B. The lizard and humans share a common
ancestor because of the presence of a
backbone and legs.
C. The trout and humans share a common
ancestor because of the presence of a
backbone.
D. Earthworms were the most recent to evolve
because of the absence of the derived
characteristics.
Answer:
B
Explanation:
It tells us a lot about why the argument is correct.
In fruit flies, eye color is a sex-linked trait. Red is dominant to white.
What are the sexes and eye colors of flies with the following genotypes:
Look at the picture
30 points and braininess
Answer:
The correct answers are:
1 a. X^RX^r - red eye color female
b. X^RX^R - red eye color female
c. X^RY - red eye color male
d. X^rY - white eye color male
e. X^rX^r - white eye color female
(2nd part can also be answered by above)
Explanation:
It is given that the eye color is a sex-linked character where Red eye color is dominant over white eye color in fruit flies. Sex-linked characters are the character that is a similar inheritance pattern except in the case of the male as there is a Y chromosome that does not carry the gene for the eye color trait so the trait will depend on the allele present on a single X chromosome in males.
On the basis of this, the sex and color of eyes will be:
a. X^RX^r - red eye color female - Dominant character will mask the recessive white color and two copies of X which means female.
b. X^RX^R - red eye color female - both copies are dominant so red-eye color will be expressed and two copies of the X chromosome that means female
c. X^RY - red eye color male - One X and one Y chromosome that means male and only dominant allele present so red eye color.
d. X^rY - white eye color male - Only allele that is present is recessive with one Y chromosome that means male with white eye color.
e. X^rX^r - white eye color female - two X chromosomes with recessive allele which means white eye color female.
Dominance refers to when an allele masks the effect of another allele.
Red is dominant to white
The sexes and eye colors of flies with the following genotypes:
XR Xr - Female with red eyes.
XR XR - Female with red eye
XR Y - Male with red eye
Xr Y - Male with white eye
Xr Xr - Female with white eye
White eyed male - Xr Y
white eyed female - Xr Xr
Red eyed female (heterozygous) - XR Xr
Red eyed male - XR Y
White eyed female XrXr and red eyed male XRY
Xr Xr
XR XRXr XRXr
Y XrY XrY
The cross shows 50% red eyed female and 50% white eyed male.
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If a nation has 120 million employed people and 15
million unemployed people, what is the unemployment rate?
A cleft chin in humans is coded by the dominant allele C. A chin without a cleft is coded by the recessive allele c. A man with a cc allele combination for the trait produces a zygote with a woman with a Cc allele combination for the trait. Which allele combinations could occur in the zygote?
Answer:
The allele combinations are: Cc, cc, Cc, cc
Phenotypically there is a 50% chance that the child will be born with or without the cleft
The allele combinations that could occur in the zygote is Cc or cc.
What is an allele combination?An identification of the specific alleles found at each of the relevant mouse loci on the two homologous chromosomes (i.e., all allele pairs of a genotype). One or more allele pairs can make up an allele combination.
Genetic linkage is the capacity of a chromosome to transmit alleles that are near to one another as a whole unit through meiosis. Inheritance of traits is also understood by this principle. It is useful in locating the genes that are in charge of characteristics and diseases.
The person is homozygous for the allele if the two alleles are the same. The person is heterozygous if the alleles are different.
Therefore, the zygote may include the allele combinations Cc or cc.
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H is the allele for long hair
h is the allele for short hair
If a squirrel is heterozygous, what phenotype does the squirrel have?
Question 6 options:
long hair
short hair
Hh
no hair
Answer:
Long hair
Explanation:
if the squirrel is het3r0zygous, the phenotypical trait would be long hair because states in the question, the allele for long hair is H and it is capital, so unless the question is incorrectly written we must assume H/long hair is dominant trait over little h. the reason Hh is incorrect is because that is the genotypical trait. we can also eliminate short hair because if the squirrel had short hair it's genotypical trait would be hh or h0m0zygous. so long hair is the correct answer.
17. Why do scientists gather large amounts of data about the state of the atmosphere?
O A. to make weather maps and accurately predict local weather
B. to keep busy, look important, and try out new computer programs
O C. to write scientific texts and documents for publication
O D. to compare the amchort of data gathered with other science disciplines
Turn In
Answer:
The correct answer is - option A. to make weather maps and accurately predict local weather.
Explanation:
Among all the options the best explanation is that scientists collect large amounts of data about the state of the atmosphere to create a map of the weather of a particular area and predict the local are weather accurately.
They collect precipitation, humidity, wind direction, wind speed and many more detailed data to study the weather of the area and predict the future weather forecast.
Thus, the correct answer is - option A. to make weather maps and accurately predict local weather.
the side with ____________ solutes to the side with __________ solutes.
(active transport)
Answer:
The side with more solutes to the side with fewer solutes.
Explanation:
Uses the concept of diffusion.
HOPE THIS HELPED
Which pair best matches a type of land cover with an appropriate land use?
• A. Forestland -> Growing crops
• B. Urban land -> Growing crops
• C. Pastureland -> Grazing livestock
• D. Developed land -> Grazing livestock
Answer:
option C is correct answer of this question
=> pastureland = Grazing livestock
hope it helps
Answer:
C
Explanation:
Where are diploid cells found ?
A. only in reproductive organs
B. only in twin siblings
C. through out the body
D. only in the lungs
Answer:
c
Explanation:
diploid cells are cell that have 2 genetic alleles, one from your mom and one from dad, so all your cells are diploid, except haploid cells in the rep system.
different _______ working together to perform a particular job are called __________
Answer:
Different tissue working together to perform a particular job are called organs.
Explanation:
The combination of fibers and ground substance in fluid connective tissue is known as
A) ground substance
B) fat
C) cytosol
D) plasma
In a flower, the anther is attached to filament. What advantage does the filament provide to the anther?
A. The filament elevates the anther to allow for easier transport of pollen by wind or insects.
B. The filament provides the anther with nutrients to produce pollen grains.
C. The filament protects the anther from harsh sunlight and insects.
D. The filament produces a sticky surface to allow the anther to capture pollen.
The correct answer is A. The filament elevates the anther to allow for easier transport of pollen by wind or insects.
Explanation
The filament of a flower is the sterile part of the stamen (male organ of the flower) that is located just below the anther. Its function is structural to hold the sling so that it is accessible to insects. The filament is usually cylindrical and fine. Therefore, the correct answer is A. The filament elevates the anther to allow for easier transport of pollen by wind or insects.
Corona means____ and most human corona viruses cause ____ symptoms in humans. A. Circle, mild B. Crown, major C. Crown, mild
Answer: the answer is c for both
Explanation:
what is the strongest metal
Answer:
tungsten metal is the strongest metal.
Answer:
TungstenExplanation:
Tungsten has the highest tensile strength of any pure metal.
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Hope I helped!!!
GL :)
what is a false scorpion
Answer:
huh im not prcicley undertsa
Answer:
A pseudoscorpion, also known as a false scorpion or book scorpion, is an arachnid belonging to the order Pseudoscorpiones, also known as Pseudoscorpionida or Chelonethida. Despite their appearance to true scorpions and ticks, they are NOT harmful to people. Physical removal is the only necessary control.
Explanation:
what is a cell membrane and its functions
Answer:
The cell membrane is a strip of membrane around the cell and it keeps bad things from entering the cell
Explanation:
During a hot, dry day, plants close their stomata to prevent water loss. When scientists replicate this environment in an experiment, they observe that over time, the plants stop producing oxygen.
Why does oxygen production stop?
what happens to a cell when it becomes cancerous ?
A. the cell no longer responds to signals that regulate the cell cycle
B. the cell grows much larger and never stops growing
C. the cell dies
Explanation:
When cancer starts to grow within a cell, this cell’s function is altered and it begins to multiply out of control. Simply put, cancer cells are nothing but cells gone wrong - they no longer respond to the signals that control cellular growth and death. Subsequently, they divide more rapidly than their progenitors and become less dependent on signals from other cells.
:)
i agree with the other answer
provide one example of how Tammy could have handled the personal call differently
Tammy answers a private call on her business phone at work. She might have handled it better by politely excusing herself and offering to call the person back during her break or after work hours instead of having a long conversation.
She might say, "I'm sorry, but I'm at work right now and I need to concentrate on my tasks. Can I call you back after work or during lunch break? So that there is no rush, we can talk properly. Setting limits and prioritizing her job obligations allows Tammy to maximize productivity at a later time while attending to a personal issue in a thoughtful and professional manner.
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Photosynthesis occurs when___
Answer:
D. All of the above
Answer: all of the above. Hope this helps can u give me brainliest
Explanation:
what do you call a soft ,heated mass of crushed leaves and other substances that spread over the skin to treat swelling or pain ?
a.bandage
b.ointment
c.poultice
d.solution