Answer:
The two strands are held together by hydrogen bonds between the bases, with adenine forming a base pair with thymine, and cytosine forming a base pair with guanine
Can someone tell me if this is correct I need help with the percentage
Answer:
Hand = 75%
No hand = 25%
Explanation:
It's the same thing as last time. Since 3 of them are heterozygous and have 1 dominant allele, they have the dominant trait. And since one of them only has recessive alleles then it should have the recessive traits.
So the hand should have 75% and no hand has 25%.
( I saw someone else just post a link so I answered it in that question box, but it got deleted so i'm just writing it out here ig)
You are a researcher interested in a rare, highly endangered bird species that lives in a very remote area of the Amazonian rainforest. Almost nothing is currently known about this species’ diet, behavior, life-span, breeding system, or its interactions with other species. Use your knowledge of the definition of ecology, the scales at which ecological research is conducted, and experimental design.
1. Which ecological level (or levels) would you focus on in your research? Justify why you would choose this level (or levels), and explain why you would not choose the others.
2. Would you use an observational, experimental, or modeling approach to study this rare bird species? Why would the approach you chose be a better choice than the others for your study?
Answer:
- Ecological levels to consider in this study: organism, population and community
- Approach: I would use an observational approach to study this bird species
Explanation:
The levels of the ecological organization include the organism, population, community, ecosystem, and biosphere (from simplest to most complex). In this exploratory study, it is imperative to consider: 1-morphological, physiological and behavioral adaptations of the bird species (i.e., organismal-level), 2- size/density/structure of the bird population (i.e., population-level), and 3-interactions between bird population and other populations (i.e., community-level). The higher ecological levels, i.e., ecosystem-level (relationships between the community and abiotic factors ) and biosphere-level (biosphere = planet Earth), can be in this case disregarded because this study is centered on a focus bird species. Moreover, it is expected to apply an observational strategy because nothing is currently known about the focus bird species. The experimental and modeling approaches seem more suitable to test a particular hypothesis being discussed (it is not the case for this study).
Help 7 grade science
Answer:
rotifer
Explanation:
An omnivore feeds on both plants and animals. I'm this food web the rotifer is eaten by the copopod. The copepod feeds on golden algae (plant) and rotifer (animal), which makes it an omnivore. As such, the correct answer is rotifer because it is feed on by the omnivore, copepod.
Alleles are represented by using letters. A dominant gene is
represented by what kinds of letters? Capital or small letters?
Answer:
Capital
- Refer to the basic theory in genetics.
A recessive allele for blue eyes (b) has a frequency of .3 in population 1 and a frequency of .15 in population 2. Pollution causes a number of people in population 1 to go to population 2. After they migrate 35% of the people in population 2 consist of people from population 1. What would be the frequency of blue eyes in population 2 after the migration
Answer:
The frequency of blue eyes in population 2 after the migration is q₂´ = 0.195 ≅ 0.2
Explanation:
Whenever migration, m, occurs between two populations, there is genetic flow going on. Genetic flow is an evolutive strength only if migration > 0 and if the allelic frequency in one generation is different from the allelic frequency in the next generation.
Genetic flow acts homogenizing the allelic frequencies between the two populations, and it might introduce variability into the new one.
For genetic flow to be possible, there needs not only the movement of the genes from one population to the other but also the reproduction process on the new population. Hence, it involves an interaction between the dispersion pattern and the reproductive system.
Available data:
Population 1 → frequency of the recessive allele b = 0.3Population 2 → frequency of the recessive allele b = 0.15m = proportion of gametes coming from the population 1 = 30% = 0.31-m = proportion of gametes that remain in the populationp = frequency of the dominant allele in population 1 before migrationq = frequency of the recessive allele in population 1 before migrationp´ = frequency of the dominant allele in population 2 after migrationq´ = frequency of the recessive allele in population 2 after migrationTo calculate the frequencies of the gametes (p1, q1, p2, q2) after migration, we can use the following equations:
p₁’ = p₁ (1 - m) + p₂ x mq₁´ = q₁ (1 - m) + q₂ x mp₂’ = p₂ (1-m) + p₁ x m q₂´ = q₂ (1 - m) + q₁ x mSo to know the frequency of blue eyes in population 2 after the migration, we just need to replace the terms in the equation for the given values, and then calculate q₂´.
q₂´ = q₂ (1 - m) + q₁ x m
q₂´ = 0.15 (1 - 0.03) + 0.3 x 0.3
q₂´ = 0.105 + 0.09
q₂´ = 0.195 ≅ 0.2
How did Mendel solve the problem of always observing the same traits in his experiments?
Factorise completely pq - q?
Explanation:
q(p-1) is the factorization of pq- q.
Rinderpest (a virus) has high mortality in wildebeest (a kind of herbivore), especially in young animals. From the early 1960s, after the elimination of a virus called rinderpest, the wildebeest population has increased dramatically from 1958 to 1978. The elimination of rinderpest impacted the wildebeest population. What type of factor is rinderpest
Answer:
density-dependent, top-down factor
Explanation:
In biology, limiting factors are resources and other conditions in the environment whose presence/availability limit the population growth rate. Density-dependent factors refer to the conditions whose effects on the size/growth of the population vary depending on the population density. Some examples of density-dependent factors include diseases, competition, and predation, etc. These factors can exhibit a positive or negative correlation with the population size. Moreover, bottom-up population control (species limitation by resources) refers to limitations placed by resources allowing growth (e.g., food source or habitat), while top-down population control (limitation by enemies), refers to limitations placed by factors that control the death rate in the population (e.g., predation or diseases).
What would make oppositely charged objects attract each other more?
increasing the positive charge of the positively charged object and increasing the negative charge of the
negatively charged object
decreasing the positive charge of the positively charged object and decreasing the negative charge of the
negatively charged object
increasing the distance between the positively charged object and the negatively charged object
maintaining the distance between the positively charged object and the negatively charged object
Answer:
A
Explanation:
Answer:
A, increasing the positive charge of the positively charged object and increasing the negative charge of the negatively charged object
Explanation:
EDGE 2021
How does contour plowing in farming help to prevent pollution?
Answer:
Contour plowing is used to reduce erosion and sediment pollution. Contour plowing is used to treat pathogens in livestock waste. Contour plowing is used to make insecticides less toxic
Explanation:
Contour plowing is used to reduce erosion and sediment pollution. Contour plowing is used to treat pathogens in livestock waste. Contour plowing is used to make insecticides less toxic
Contour plowing is a farming practice which is used to reduce erosion and sediment pollution. Contour plowing is used to treat pathogens in the livestock waste.
What is Contour plowing?Contour plowing is a farming practice which creates contour lines in the soil, these lines are placed perpendicular to the slope of the line, for this reason, they are a method which is used to prevent soil erosion and retain water in soil.
Contour farming is used to reduce erosion and sediment pollution because it helps in retaining soil moisture and water content. Contour lines favor infiltration of rainwater as water run-off is stopped through this.
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Describe the reproductive system in humans.
Answer:
The human reproductive system includes the male reproductive system which functions to produce and deposit sperm; and the female reproductive system which functions to produce egg cells, and to protect and nourish the fetus until birth. Humans have a high level of sexual differentiation.#carryonlearning
Humans and baboon have noses with nostrils that face downward, but many other primates have noses with nostrils that face out to the sides. Humans and baboons are also more closely related to each other than they are to primates with outward-facing nostrils. Therefore, the fact that both humans and baboons share the downward-facing nostril orientation is an example of
Answer:
a shared derived trait.
Explanation:
Genetics can be defined as the scientific study of hereditary in living organisms such as humans, animals and plants.
Simply stated, a trait refers to the specific features or characteristics possessed by a living organism. It is essentially transferred from the parent of a living organism to her offspring and as such distinguishes him or her.
Heredity refers to the transfer of traits (specific characteristics) from the parent of a living organism to her offspring through sexual reproduction or asexual production. Some examples of hereditary traits are dimples, tongue rolling, baldness, weight, handedness, freckles, curly hair, hair color, blindness, complexion, height, etc.
All humans and baboons are created having noses with nostrils underneath i.e facing downwards but other primates such as platyrrhines have their nostrils facing sideways (face out to the side). Also, humans and baboons shared close similarities with each other when compared than they share with the primates having a outward-facing nostrils.
This ultimately implies that, both humans and baboons sharing the downward-facing nostril orientation is an example of a shared derived trait.
A shared derived trait can be defined as a trait or characteristic that is shared between two lineages and subsequently evolves leading up to a clade, which is a distinguishing feature from other species.
how to calculate average molarity
Answer:
To calculate the molarity of a solution, you divide the moles of solute by the volume of the solution expressed in liters.
Explanation:
The molarity (M) of a solution is the number of moles of solute dissolved in one liter of solution. To calculate the molarity of a solution, you divide the moles of solute by the volume of the solution expressed in liters.
A strain of a cereal grain can be either dark tan, medium-dark tan, medium tan, light tan, or cream colored. When a dark tan and a cream plant are crossed, all F1 are medium tan. The F2 are distributed in a ratio of 1:4:6:4:1 from darkest to lightest. How many genes are involved in this coloration?
Answer:
The correct answer is - 2 genes.
Explanation:
The number of genes involved in the coloration of the strain of cereal grain, could be either dark tan, medium-dark tan, medium tan, light tan, or cream-colored if all F1 are medium tan when crossed a dark tan crossed with cream-colored, can be calculated as follow:
suppose there are only two gene - TT dominant over tt and CC dominant over cc
then the cross would be - RRCC - rrcc
gametes - RC and rc
Cross F1: RrCc
Self cross in F2:
offspring by Punnet cross are:
RRCC -->1/16
RRCc, RrCC .---> 4/16
RrCc, RRcc, rrCC--->6/16
rrCc, Rrcc--->4/16
rrcc ----> 1/16
thus, the correct answer is 2 genes
How did the development of sexual reproduction affect evolutionary change?
The Barton Springs salamander is an endangered species found only in a single spring in the city of Austin, Texas. There is growing concern that a chemical spill on a nearby freeway could pollute the spring and wipe out the species. To provide a source of salamanders to repopulate the spring in the event of such a catastrophe, a proposal has been made to establish a captive breeding population of the salamander in a local zoo. Suppose you are asked to provide a plan for establishing this captive breeding population, with the goal of maintaining as much of the genetic variation of the species as possible in the captive population.
What factors are likely to lead to a loss of genetic variation in the captive population?
a. increased rate of mutation
b. a founder effect
c. reduced genetic drift over time
d. a lack of inbreeding
What strategy would likely be effective in mitigating the loss of genetic variation in the captive population? a. keeping the sex ratio as close to 50:50 as possible
b. stopping gene flow to and from the captive population
c. regularly mating individuals that are related
d. keeping the captive population as small as possible
Answer:
1. b. a founder effect
2. a. keeping the sex ratio as close to 50:50 as possible
Explanation:
The founder effect is a phenomenon that occurs when a small subset of individuals split from a larger population in order to establish a new colony. The founder effect is known to cause a reduction in genetic variation of the colony due to genetic drift, i.e., due to the random sampling of the individuals that form the colony (which doesn't reflect the total genetic diversity of the original population). Moreover, the sex ratio refers to the proportion of males to females in a population. When establishing a captive population, it is recommended to maintain a sex ratio as close to 50:50 as possible because it reduces inbreeding, and thereby mitigating the loss of genetic variation. In some populations, it has been proposed that a 50:50 sex-ratio might also increase the competition between males, which is believed to be fundamental for maintaining a healthy genetic structure of the population.
4. Which was a stronger nuclear blast?
a. The Hiroshima "Little Boy" bomb, 15 kilotons
b. The Trinity test explosion, 21 kilotons
c. The Castle Bravo explosion, 15 megatons
d. The 100-ton test, 0.1 kilotons
Answer:
I think it would be the Castle bravo explosion
Explanation:
Castle bravo was about 1,000 times more powerful than each of the atomic bombs that were dropping Hiroshima and nakazaki during world war II and I'm guessing in megaton is stronger than killotons
3) An astronomer observes four stars from two different locations on Earth. For which star will the
astronomer observe the greatest parallax?
the star that is 3.4 AU from Earth
the star that is 4.2 AU from Earth
the star that is 6.8 AU from Earth
the star that is 10.4 AU from Earth
Answer:
An astronomer observes four stars from two different locations on Earth. Will the astronomer observe the greater parallax for a star that is closer to Earth or farther from Earth? the greater parallax for a star that is closer from Earth.
Explanation:
i hope u read to found the answer
What is the term for the absolute worst type of inflation, where prices skyrocket out of control and a nation's economy becomes at risk of collapse?
Answer:
Hyperinflation is a term to describe rapid, excessive, and out-of-control general price increases in an economy.
Explanation:
g Neuron A and neuron B interact with neuron C. Neuron A will produce an IPSP of -2mV in neuron C; neuron B produce an EPSP of 3mV in neuron C. The resting membrane potential is -70mV and the threshold is -50mV. Neuron A fires 6 times rapidly at the same time that neuron B fires 4 times rapidly. What is the resulting membrane potential in neuron C
Answer:
-70 mV
Explanation:
Given that Neuron A and Neuron B interact with Neuron C
Neuron A produces ; - 2mV of IPSP and fires 6 times
Neuron B produces ; 3mV of EPSP and fires 4 times
Resting potential = - 70mV
threshold = - 50mV
The resulting membrane potential in neuron C
= -70 + 6(-2) + 4(3)
= -70 - 12 + 12 = -70 mV
the fertilization of ovules from plant Q by pollen from plant R results in the productions of seeds. What percent of the genes in each offspring's chloroplasts wioll have been inherited from plant R
Answer:
The correct answer is - zero or 0%.
Explanation:
The fertilization in flowering plants takes place by fusing the pollen of one plant or flower with the ovum of another plant or flower of the same species normally and form a zygote. The zygote gets an equal amount of genetic material from both parent plants by the process f exchange of the genetic material.
The ovum or the egg cell of the plant is considered as the mother and the mother is responsible for the chloroplast And mitochondria of the progeny so in this case, the ovum and egg cell comes from the only plant Q thus, the percentage of chloroplast genes provided via Plant R is 0%.
The digestive, respiratory and circulatory systems are controlled
by the:
Select one:
a. skeletal system
b. ophthalmic branch
C. voluntary nervous system
d. autonomic nervous system
PLEASE HURRY 5 mins left !!!
Answer:
D
Explanation:
The digestive, respiratory and circulatory systems are controlled by the: d. autonomic nervous system
The autonomic nervous system (ANS) is the part of the nervous system that controls involuntary physiological processes (e.g., heart rate, blood pressure, respiration and digestion).
ANS supplies internal organs such as the stomach, intestine, liver, kidneys, bladder, genitals, digestive glands, etc.
ANS is divided into three main parts: Sympathetic nervous system: responsible for forming localized adjustments (e.g., sweating) and cardiovascular system adjustments. Parasympathetic nervous system: responsible for body functions when the body is relaxed, resting, or feeding. Enteric nervous system: responsible for controlling the gastrointestinal tract functions.
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Each of the following is a function of the liver, except A. inactivation of toxins. B. synthesis of plasma proteins. C. production of digestive enzymes. D. synthesis and secretion of bile.
Each of the following is a function of the liver, except production of digestive enzymes. The correct option is C.
What are the functions of liver?The liver is the largest gland in the body and is located in the right upper quadrant of the abdominal cavity. It has over 500 essential functions. They include: Detoxification and purification - The liver is responsible for filtering toxins and harmful substances from the blood, preventing them from entering the bloodstream and harming other organs.
The liver is responsible for synthesizing many important plasma proteins, including albumin and clotting factors. The liver secretes bile, which aids in the digestion of fats and the absorption of fat-soluble vitamins.
The liver stores many essential nutrients, including vitamins and minerals. The liver is responsible for storing glucose as glycogen and regulating glucose levels in the bloodstream.
Therefore, each of the following is a function of the liver, except production of digestive enzymes.
Thus, the correct option is C.
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Give an example of
how radiation is
transformed into
other forms of
energy.
help me
Answer:
Radio waves. Electricity. A surface heated by the sun converts the energy of the light into infrared energy which is a form of radiant energy.
Explanation:
;P
How do I know if a girl is mad at me? (over text)
Okay, I am a girl so it will be easy to explain.
If a girl is upset at you through text then here is 10 signs to help you:
1. She puts more than one dot next to her texts.
2. She says 'Whatever' when you say something nice to her.
3. She says 'okay' when you ask a question on where to go and you pick it.
4. She doesn't text back within two days.
5. She sends you a gif or a picture of something to change the subject.
6. She decides to text 'What are you doing' as her first text, her thinking that you done something wrong. aka, she doesn't trust you.
7. She tried to change the subject by asking a qiestion or just doesn't answer you and sends a picture of a random thing in her room.
8. She does all caps when you ask her something sensitive.
9. She puts '....' as her answer when you hit one of her nerves.
10. She deletes and blocks you off anything you and her have contact with.
I hope this helps you, mate. I hope you and your girl friend have a better relationship! :)
Which Natural Step System Goal is being broken here?
Scenario: We are using petroleum from deep underground at a rate much faster
than the earth can create more petroleum.
System Goal 1
System Goal 4
System Goal 3
System Goal 2
Answer:
The Natural Step Framework is a methodology for successful organisational planning. It is based on systems thinking,
recognizing that what happens in one part of a system affects every other part. We begin by understanding the broader system
within which problems occur and the principles governing success within that system These principles for success then
provide a practical set of design criteria that can be used to direct social, environmental and economic actions, developing
effective, durable solutions to the environmental, social and economic issues of the new century.
Explanation:
Name and describe the 4 types of tissue found in an animal’s body
Answer:
connective tissue, epithelial tissue, muscle tissue, nervous tissue
Explanation:
epithelial tissues act as coverings controlling the movement of materials across the surface
connective tissues integrates the various parts of the body and provides support and protection to organs
muscle tissues allows the body to move
nervous tissues propagate information
Explain the effect of the fungi on the growth of the seedlings after they emerge.
Answer:
The most common pattern is where the cotyledons are raised above ground as the seedling emerges. The seedling forms a hypocotyl hook that pushes through the soil. Once the seedling reaches the light, the hook opens to create a straight seedling. ... The cotyledons function as the repository for food reserves in the seed.
Explanation:
Answer:
Under certain environmental conditions, damping off pathogens can cause root rot or crown rot in mature plants.
What did fungi diverge from?
Please answer quickly
Answer:
which one is it 9 42 or 12?