The expected proportion of purples individuals in the F2 of a heterozygous cross (purple phenotype) is equal to 2 in 4.
What is a Punnett square?A Punett square is a diagram used to estimate the genotypic and phenotypic proportions in a given cross.
In this case, purple individuals (Aa genotype) will be:
A a
A AA Aa
a Aa aa
In conclusion, the expected proportion of purples individuals in the F2 of a heterozygous cross (purple phenotype) is equal to 2 in 4.
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Answer:2 in 4
Explanation:
I got it right on edge
Question 21 of 34
Why do water molecules "stick together"?
OA. The partially positive charge on the oxygen of one molecule
attracts the partially negative charge on the hydrogen of another.
B. The partially negative charges on the oxygen atoms of two
different water molecules are attracted to each other.
C. The partially positive charges on the hydrogen atoms of two
different water molecules are attracted to each other.
D. The partially negative charge on the oxygen of one molecule
answer B.the partially positive chargers on the oxygen atoms of two
Place the following in order: organelle, nervous system, atom, nerve cell, molecule, brain.
Trucks, houses and swimming pools are measured using:
meters
centimeters
millimeters
quadrameters
Trucks, houses and swimming pools are measured using: millimetres. Thus, option "C" is correct.
How, explain your answer?If it is four millimetres wide on the drawing, then you can divide 16 by 4 to find that every four meters in real life are equivalent to one millimetre in the drawing.
Thus, option "C" is correct.
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Needed asp now now now help ! be correct as well!!
a scientist separates a population of lizards into two groups. what would most likely increase the rate of speciation in this population? a. have one group breed twice as often as the other. b. have one group live with a much stronger predator. keep the two groups apart, but in identical ecosystems. d. force the two groups to breed with each other.
Speciation occurs when there is genetic divergence between two separated groups that used to belong to the same population. Option B) one group live with a stronger predator.
What is speciation?When the original species is divided and placed in different environments, where they can reproduce for many generations, many changes or mutations will occur in each group.
These changes will depend on each group's environment and its ecological pressures.
Pressures act on individuals and make them adapt to the new environmental conditions.
Generation after generation, the genotype of individuals will increase the fitness to survive and reproduce. The fixation of mutations will increase the difference among both groups, up to the diverging point into two new species.
What factors lead to speciation?
One of the main factors that lead to speciation is separating an original population into two or more different groups divided by natural or atificial barriers that can not be crossed. This is the case of allopatric speciation.
After the emergence of the barrier, there is an interruption in the genetic interchange between these groups. New mutations might occur in each group due to environmental differences, leading to genetic divergence over time.
Options
a. have one group breed twice as often as the other.
Assuming identical environmental conditions for both groups, if the genetic charge does not change, there should not be speciation even if one of the populations gets to reproduce more frequently than the other.
b. have one group live with a much stronger predator.
The fact that one of the groups is exposed to a stronger predator and the other group is not, changes the environmental conditions for one of them. The group exposed to the stronger predator will suffer mutations that lead it to adapt to the presence of this new predator. In this case, there will be a genetic divergence between the two groups and hence, speciation.
c. keep the two groups apart, but in identical ecosystems.
Under identical environmental conditions, there is no speciation.
d. force the two groups to breed with each other.
There is genetic flow and the same genetic charge, so there is no speciation.
The correct option is B) have one group live with a much stronger predator.
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Which is a function of the central nervous system? Ingenuity
Answer:
It controls all voluntary movement, such as speech and walking, and involuntary movements, such as blinking and breathing. It is also the core of our thoughts, perceptions, and emotions.
Explanation:
None.
Define: nonpoint-source pollution
Answer:
NPS pollution is caused by rainfall or snowmelt moving over and through the ground. As the runoff moves, it picks up and carries away natural and human-made pollutants, finally depositing them into lakes, rivers, wetlands, coastal waters and ground waters
Explanation:
brainly if u want
According to the diagram, what sources contribute to the phosphorus found in soil? According to the diagram, phosphorus found in soil contributes phosphorus to what other sources?
The nutrient cycle is defined as the transportation of nutrients from different components of the environment. A living state refers to the amount of minerals present in an ecosystem.
The nutrition cycle is divided into two categories. The following are some of them:-
Gaseous cycleSedimentation cyclePhosphorus is a nutrient cycle that occurs as a result of sedimentation. The following are the phosphorous' sources, as stated in the question:
MountainsSoilsLeachingplants absorptionLeaching is the process of a nutrient dissolving when raining and enhancing the nutritious quantity of the soil.
Mineralization and immobilization reactions mediated by the microbial biomass pool, as well as the solubilization of inorganic phosphorus-containing minerals by organic acids, inorganic acids, and chelating agents produced by soil organisms, are all part of the phosphorus cycle.
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what type of fungi is a catfish most similar to?
Answer:
Fungal infections (fungal infections are called mycoses) are among the most common diseases seen in temperate fish. Because fungal spores are found in all fish ponds and create problems in stressed fish. Poor water quality can also lead to an increase in fungal infections in an otherwise healthy fish population
Explanation:
hope it will help you
Consider the two rectangles shown.
2 rectangles have identical side lengths and angle measures. The second rectangle is a reflection of the first.
What transformation maps rectangle QRST to rectangle Q’R’S’T’?
reflection
rotation
stretch
translation
The transformation maps rectangle QRST to rectangle Q’R’S’T’ is reflection.
What is reflection?Reflection of light is an optical phenomenon in which a visible electromagnetic wave strikes a given medium, returning to the original medium in which it propagated.
In this case, reflection of an object occurs in such a way that it is equally reflected where the same points are in the same places.
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PLS HELP ME I NEED THIS IN 1 MINUTE I AM BEING TIMED AND I'M SO CONFUISED PLEASE!!!
When does a solar eclipse occur?
when the moon's umbra covers the sun
when the earth's umbra covers the sun
when the moon's umbra falls on the earth
when the earth passes between the moon and the sun
Answer:
Explanation:
Desensitization is a cognitive phenomenon in which those exposed to violence tend to __________. a. behave more aggressively b. become numb to more violence c. see violence as exceptional d. savor violent iconography please select the best answer from the choices provided a b c d
Desensitization is a cognitive phenomenon in which those exposed to violence tend to become numb to more violence. Thus, the correct option is B.
What is Violence?Violence may be defined as an accomplishment of physical force that causes or is planned to cause harm, damage, or kill someone.
Therefore, the correct option for this question is B.
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When humans plant more trees, carbon can begin entering the _______________ as carbon dioxide.
Answer:
Hydrosphere, geosphere or biosphere
Explanation:
What kind of organism is an autotroph
Answer:
an organism that can produce its own food using light, water, carbon dioxide, or other chemicals.
Like a Plant
Hope This Helped
15
Select the correct answer.
What's the role of oxygen in cellular respiration?
OA.
It accepts electrons and keeps the electron transport chain running.
B.
It breaks down carbon-based sugar molecules to release energy and forms carbon dioxide.
OC. It combines with hydrogen ions in sugar molecules to release energy and form water.
OD. It supplies electrons to the electron transport chain to keep it running.
The role of oxygen in cellular respiration is It accepts electrons and keeps the electron transport chain running.
What is Cellular respiration?Energy is the ability to perform a job or to produce heat. Chemical reactions involve a rearrangement of atoms between substances with rupture or formation of chemical bonds and this generates changes in the energy of the system.
An exothermic reaction is one where energy is released from the system into the environment in the form of heat.
Cellular respiration is carried out in the mitochondria of the cells. There the oxygen absorbed from the external environment is combined with carbohydrates (raw material) to release the chemical energy they contain. Water vapour and carbon dioxide are also released.
Thus, option "A" is correct.
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is often in the news, the opposite extreme can also lead to globa
henomenon known as La Niña is an extreme cooling of the Pacific
iña, cooler water stretches across the Pacific Ocean all the way to
d La Niña events can have far-reaching effects such as; intense ra
e droughts, and increased number of winter storms in many areas
Il-In" questions below using information from above,
is the oceanic occurrence of warming the Pacific Ocean.
ds for
urs in the
Ocean,
acific Ocean equatorial currents flow in a
direction
is the process of bringing cooler water up to the ocean surf
ENSO stands for?
Answer:
if you have ah party wen we are pouring for the house and I
Which statement accurately describes how the understanding of the Doppler effect is applied to the study of galaxies?
The Doppler effect, which is used to examine galaxies, tells us that a galaxy is approaching Earth through a redshift. hence option C(It indicates a galaxy moving toward Earth through red shift) is correct.
What do you mean by doppler's effect?Doppler effect, generated by the relative motion of the wave source and the observer, is the apparent difference between the frequency at which sound or light waves leave a source and that at which they reach an observer. Mössbauer effect, which uses this phenomenon in astronomical observations.
Galaxies are studied using the Doppler effect. Astronomers typically measure the light divergence towards the lower frequency, in the spectrum we look at the red region, to determine how quickly stars and galaxies are moving away from or towards us. As a result, it suggests that a galaxy is redshifting and approaching Earth.
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What type of organisms do marine scientists believe may provide clues to marine viruses?
a/algae
b/bacteria
c/microbes
The type of organisms that marine scientists believe may provide clues to marine viruses are microbes.
What are marine viruses?Marine viruses are specific types of viruses found in marine environment or habitat.
Marine viruses like other viruses need to infect a living host to survive and replicate themselves. Marine viruses infect almost every living organism in the marine habitat.
Marine viruses are generally known to be microbe killers. Marine viruses infect their host cell by inserting their genetic material and hijacks the machinery inside the cell in order to replicate.
Therefore, the type of organisms that marine scientists believe may provide clues to marine viruses are microbes.
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fossilized carbon found in ancient plant and animal remains is said to be
The fossilized carbon found in the remains of ancient plants and animals is said to be carbon 14, used for dating fossilized living things.
What is carbon 14 from carbon 12?Carbon 14 is a natural radioactive isotope of the element carbon, receiving this number because it has an atomic mass of 14. This isotope has two more neutrons in its nucleus than the stable isotope carbon 12. C14 is formed continuously in the atmosphere and is the result of the process of cosmic ray bombardment.
With this information, we can conclude that the fossilized carbon found in the remains of ancient plants and animals is said to be carbon 14, used for dating fossilized living things.
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What is an advantage of using a smaller contour interval
The answer is
The advantage of using smaller contour interval is that you can see the detail of mountain.
A smaller contour interval is used for showing small details .A contour interval in surveying is the vertical distance or the difference in the elevation between the two contour lines in a topographical map
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LITERALLY WILL GIVE ANY AMOUNT OF POINTS HELP Complete the total time column for the table below to assist with answering the
reflection questions. The first one has been completed for you.
.
bya-billion years ago
.
mya-million years ago
1cm=10 million years ago
Time Span
Scale
Total Time
4.6 bya-3.8 bya
460 cm -380 cm
.8 billion years
3.8 bya-2.5 bya
380 cm-250 cm
2500 mya-543
250 cm - 54.3 cm
mya
543 mya-490 mya 54.0 cm-44.0 cm
490 mya-443 mya
49.0 cm-44.3 cm
443 mya-417 mya
44.3 cm-41.7 cm
417 mya-354 mya
41.7 cm-35.4 cm
354 mya-290 mya
35.4 cm - 29.0 cm
290 mya-245 mya 29.0 cm-24.5 cm
245 mya-206 mya
24.5 cm-20.6 cm
206 mya-144 mya
20.6 cm-14.4 cm
144 mya-65 mya
14.4 cm-6.5 cm
.
Hadean Eon
(Precambrian Time)
Archaean Eon
(Precambrian Time)
Proterozoic Eon
(Precambrian Time)
Cambrian Period
Ordovician Period
Silurian Period
Devonian Period
Carboniferous
Period
Permian Period
Triassic Period
Jurassic Period
Cretaceous Period
Hadean Eon (Precambrian Time):
4.6 bya-3.8 bya460 cm -380 cm0.8 billion yearsArchaean Eon (Precambrian Time):
3.8 bya-2.5 bya380 cm-250 cm1.3 billion yearsProterozoic Eon (Precambrian Time):
2500 mya-543 mya250 cm - 54.3 cm1957 million yearsCambrian Period:
543 mya-490 mya54.0 cm-49.0 cm53 million yearsOrdovician Period:
490 mya-443 mya49.0 cm-44.3 cm47 million yearsSilurian Period:
443 mya-417 mya44.3 cm-41.7 cm26 million yearsDevonian Period:
417 mya-354 mya41.7 cm-35.4 cm63 million yearsCarboniferous Period:
354 mya-290 mya35.4 cm - 29.0 cm64 million yearsPermian Period:
290 mya-245 mya29.0 cm-24.5 cm45 million yearsTriassic Period:
245 mya-206 mya24.5 cm-20.6 cm39 million yearsJurassic Period:
206 mya-144 mya20.6 cm-14.4 cm62 million yearsCretaceous Period:
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Why is mitochondria considered as strange organelle
What controls differentiation? Choose the correct answer.What controls differentiation? Choose the correct answer.
If green is dominant over blue, then what is the genotype for this individual?
If green is dominant over blue, then for this individual then the genotypic ratio will be 1:2:1. This can be expressed by monohybrid cross by punnett square,
What is monohybrid cross?A monohybrid cross refers to the hybrid of two individuals with pure breed genotypes that result in the opposite phenotype for a specific genetic traits.
Monohybrid cross is used by scientist to observe how pure breed offspring express heterozygous genotypes which is inherited from their parents.
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Identify the types of point mutations depicted. leucine (c t a) is transformed to valine (g t a). leucine valine missense mutation nonsense mutation silent mutation
The type of point mutation that is depicted here is missense mutation.
What is missense mutation?Missense mutation is defined as the type of point mutation where by a mistake occurs in the coding of DNA leading to the change of the DNA base pair.
From the example given, leucine (c t a) is transformed to valine (g t a) which is a different base pair.
Therefore, the type of point mutation that is depicted here is missense mutation.
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Answer:
missense mutation. aka the first answer
Explanation:
Are there any circumstances in which the daughter cells produced should not be genetically identical?
Are the daughter cells produced by mitosis genetically unique substantive, cannot divide again substantive, have half the DNA of the parent cell substantive, and are genetically identical to each other?
Answer:
At the end of meiosis and cytokinesis, four haploid cells are produced from a single diploid cell. These haploid daughter cells have half the number of chromosomes as the parent cell and are not genetically identical to the parent cell.
What are the structures in the nucleus that contain dna?.
"Chromosomes" are the structures in the nucleus that contains the DNA
How long does it take for antibiotics to start working?.
Answer:
Antibiotics begin to work right after you start taking them.
Explanation:
Antibiotics work by blocking vital processes in bacteria, killing the bacteria, or stopping them from multiplying. This helps the body's natural immune system to fight bacterial infection. However, you might not feel better for 2 to 3 days after using the antibiotics.
Punnett squares are used to show possible combinations of alleles or to predict the probability of a trait occurring in offspring. a pansy that is homozygous for purple flowers (pp) is crossed with a pansy that is homozygous for pink flowers (pp). a pansy with purple flowers. a pansy with pink flowers. which genotypes will be included for the offspring in the punnett square for this cross? pp, pp, and pp pp and pp pp and pp pp only
"Punnett squares are used to show possible combinations of alleles or to predict the probability of a trait occurring in offspring. " The genotype for the offsprings is Pp only. Option C. This is further explained below.
What is a genotype?Generally, the genotype is simply defined as a person's unique set of genes.
In conclusion, Flowers with a purple hue are more likely to bloom than those with pink hues since purple is a dominating feature.
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Please refer to the passage to
help you answer the problem.
What is the charge of the
electrical impulses sent from
stimuli?
A. Extremely positive
B. Exactly neutral
C. Negative
D. It depends on the location.
The charge of the electrical impulses sent from stimuli is extremely positive. Thus, the correct option is A. The net charge of such electrical impulses is positive because of the positively charged ions of the Na+.
What is an electrical impulse?An electrical impulse may be defined as a nerve impulse that contains an electrical signal which travels throughout the body by the axon terminal.
In the resting potential state, the potential difference is -80mV, while after reaching the electrical impulse it changes to +40mV. This happens due to an electrical imbalance between sodium and potassium influx and efflux.
Therefore, the correct option is A.
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Please help me - fill in the blank
Answer:
carbon dioxide, 16.4% of oxygen, and 4.4% of carbon dioxide, nasal cavities (or oral cavity) > pharynx > trachea > primary bronchi (right & left) > secondary bronchi > tertiary bronchi > bronchioles > alveoli,
Explanation: