Franklin, Watson, and Crick's model of DNA shows a double helical structure where two strands of
DNA run antiparallel to each other. How does this structure cause the number of purines to equal
the number of pyrimidines as observed by Chargaff?
If adenine is on one strand, guanine must be on the other strand.
If thymine is on one strand, cytosine must be on the other strand.
If adenine is on one strand, thymine must be on the other strand.
If adenine is on one strand, cytosine must be on the other strand.
Pregunta 3
5 pts

Answers

Answer 1

Answer:

If Adenine is on one strand, thymine must be on the other strand.

Explanation:

(Thymine + Adenine) (TA) (AT)

(Cytosine + Guanine) (CG) (GC)


Related Questions

Which of the following is a scientific question?
A. Does the cost of storing heated water from a power plant until it
cools outweigh the importance of protecting the native habitat?
B. Should the government regulate the release of hot water from
power plants into local bodies of water?
C. How does the release of heated water from a power plant into a
river affect native fish populations?
D. Are the needs of the community more important than the health of
a waterway?
SUBMIT

Answers

Answer:

D. Are the needs of the community more important than the health of.

Answer:

D . Are the needs of the community more important than the health of a waterway

In Mendel's first set of experiments, the two forms of a trait always showed up in the ______ generation

Answers

Answer:

Mendel began his studies by growing plants that were true-breeding for a particular trait. ... In his first experiment, Mendel cross-pollinated two true-breeding plants of contrasting traits, such as purple and white flowered plants. The true-breeding parent plants are referred to as the P generation (parental generation).

Explanation:

Hope this helps a little. Pls mark brainliest.

In Mendel's first set of experiments, the two forms of a trait always showed up in the Parental generation or P generation.

What is parental generation?

The parental generation is defined as the first set of parents crossed, where the genotypes of the parents will be used as the basis for predicting the genotypes of their offspring (the [tex]F_1[/tex]generation). The P generation is the beginning of Mendel's work on inheritance, or the acquisition of genetic traits by transmission from parents to offspring.

Mendel collected the seeds which is produced by the P plants that resulted from each cross and grew them, while their offspring were called the[tex]F_1,[/tex] or the first filial generation.

Thus, in Mendel's first set of experiments, the two forms of a trait always showed up in the Parental generation or P generation.

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25 POINTS PLEASE HELP. Check the correct column(s) for each description *
Prokaryotes
Eukaryotes
Contains cytoplasm
Do NOT have membrane-
bound organelles
Cells do NOT have a nucleus
Can be unicellular or
multicellular
Have ribosomes
Have cell membranes
Have genetic material
(DNA/RNA)
Plants and animals

Answers

Answer:

1. Both

2. Prokaryotes

3. Prokaryotes

4. Eukaryotes

5. Both

6. Both

7. Both

8. Eukaryotes

How do Venus flytraps protect themselves from predators?

Answers

Answer:

Insects are protected by a chitin exoskeleton. The Venus flytrap cracks this protective shell using special digestion enzymes that are produced once the sensory hairs register a stimulus. It will ebb away if the hairs are not further stimulated.

Answer:

I do believe that the Venus flytrap is a predator because it is a carnivorous plant.  The plant's trap is a single large leaf with trigger hairs.

Explanation:

Which of the following is the term used to describe the chill-point at which a plant may survive, but will grow little if at all?

•Tmin
•zero degrees
•base temperature
•frost point

Answers

Tmin hope this helps

When a thin plant or animal leaves an impression in sediment that becomes sedimentary rock, this is a _____________________ fossil.

Answers

Answer:

Petrified fossils

Explanation:

Some of the sugars produced by photosynthesis are stored as starch in the roots. Explain, as fully as you can, why it is an advantage to the plant to store carbohydrates as starch rather than as sugar.

Answers

Answer:

It's insoluble

Explanation:

Starch is better than glucose for storage because it's insoluble.

Insoluble meaning it can't be dissolved.

which is the thinest thing in the world​

Answers

graphene because you can't even see it with the naked eye

The Rolling Plains ecoregion lies west of the Crosstimbers area of Texas and at elevations between 900-4000 ft. The Rolling Plains is a part of the central United States Great Plains system. Like the Crosstimbers ecoregion, it has rolling hills. These topographical features are due to the several rivers that flow through this ecoregion.

The rivers in the area weather and erode the land, forming __________ in this area.

Answers

Answer: plateaus

Explanation: there not canyons so you can cross that off and its not the dunes nor the deltas so if you look at the picture you can tell it is the plateaus

Rivers in the area weather and erode the land, forming a mouth in this area.

Mouth

It is the place where a stream of water, such as a river, empties. Thus, a river can have as its mouth another river, a large lake, a pond, a sea or the ocean.

With this information, we can conclude that the rivers in the area weather and corrode the land, forming a mouth in this area.

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Please HELP!!WILL GIVE BRAAIN!!!

Answers

Answer:

False

Explanation:

Pluripotent stem cells are master cells. They're able to make cells from all three basic body layers, so they can potentially produce any cell or tissue the body needs to repair itself.

Pluripotent stem cells have the ability to undergo self-renewal and to give rise to all cells of the tissues of the body (but not the placenta).

I think the answers false

How would a compromised respiratory system impact the
circulatory
system?

Answers

Answer:

The circulatory and respiratory systems work together to circulate blood and oxygen throughout the body. Air moves in and out of the lungs through the trachea, bronchi, and bronchioles. Blood moves in and out of the lungs through the pulmonary arteries and veins that connect to the heart.

How many amino acids are coded for by the strand of mRNA shown below? Assume the reading frame begins with the first nucleotide.
CGA UAC

Answers

Answer:

2 ..........................

Answer:

2

Explanation:

Two for the win!

Mutations are
1.neutral, having no effect on an organism.
2. good or helpful for an organism.
3.either helpful, harmful or neutral, depending on the organism's environment.
4.bad or harmful to an organism.​

Answers

Answer:

either helpfu, harmful or neutral

Pteridophytes meaning​

Answers

Answer:

(Pteridophyta) of vascular plants (such as a fern) that have roots, stems, and leaves but lack flowers or seeds

Please mark as brainliest

Have a great day, be safe and healthy

Thank u  

XD

Answer: A member of the  Pteridophyt

Explanation:

a division of plants including  ferns and their allies.

I need help with 1-9 ❓

Answers

Answer:

its 8

Explanation:

because if you have 9 apples a you eat on you are left whith 8

If the AG of a reaction was -31.45 kJoules, you would know that:
A. the products have more free energy than the reactants.
B. the reaction requires an energy input of 31.45 kJoules to proceed.
C. the reaction most likely leads to development of a more ordered system
D. the reaction is spontaneous

Answers

Answer:

The correct answer is - option D. the reaction is spontaneous. (considering it as delta G or ΔG)

Explanation:

If a chemical reaction has a negative ∆G it means the reactants have more free energy than the products due to the fact that they give off some of their free energy during the reaction.

Such reactions release free energy and therefore called exergonic reactions. These reactions are also known as spontaneous reactions as they do not require energy to take place.

Thus, the correct answer is - option D.

All of the following are functions of proteins except?
A) storage
B) movement
C) structure
D) insulation

Answers

B)Movement is the one

All of the following are functions of proteins except insulation. So, the correct option is (D).

What is Protein?

Proteins are defined as large biomolecules and macromolecules consisting of one or more long chains of amino acid residues. Proteins do most of the work in cells and are essential for the structure, function, and regulation of the body's tissues and organs.

Proteins serve as the building blocks for bones, muscles, cartilage, skin and blood which also form the blocks for enzymes, hormones and vitamins. Proteins are one of the three nutrients that provide calories while the others are fats and carbohydrates.

Proteins function are storage, movement, structure, etc.

Thus, all of the following are functions of proteins except insulation. So, the correct option is (D).

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what happens when psychological processes break down?

Answers

Answer:

dont question the impossible

Explanation:

please help! it's timed!!!!

ignore my answer and please help!!

Answers

Answer:

25% will have curled wings.

Explanation:

i am really sorry if this is wrong. This question was on my unit test on edge so i don’t know if its wrong

Which example best demonstrates artificial selection?
Salmon swimming upriver to lay their eggs.
The forrest service stocking trout in a lake in Montana.
Farmers breeding pigs with less fat.

Answers

Farmers breeding pigs with less fat

list 3 ways soils are classified​

Answers

Answer:

Soils are composed of mixtures of mineral and organic materials, but are classified according to the size of their mineral particles. The three main texture groups are sandy, silty, and clay.

Sandy soil contains particles that can be seen with the naked eye and feels gritty when rubbed between the thumb and forefinger. Sandy soils will generally not stick together when wet.

Silty soil contains particles, which are smaller than sand particles but larger than clay particles. Silt feels powdery when rubbed between the thumb and forefinger. Silty soil sticks together when wet, but will not hold its shape after it is dry.

Clay soil contains the smallest particle size. Clay particles form a sticky soil when wet and will generally hold a shape after drying. Soils are rarely composed of just sand, silt, or clay. They are usually a mixture of the three with a larger percentage of one size of particles.

Answer:  

Depending upon the average grain-size and the conditions under which soils are formed and deposited in their natural state, they may be categorized into following types on the basis of their structure: In the grain-size classification, soils are designated according to the grain-size or particle-size. The more common classification systems are enlisted below: Geological Classification

Classification by Structure

Classification based on Grain-size

Unified Soil Classification System

Preliminary Classification by soil types

Based on the agencies responsible for their present state, soils may be classified under following types:  Residual Soils

Transported Soils:

Alluvial or sedimentary soils

Aeolian soils

Glacial soils

Lacustrine soils

Marine soils.

Then you have inorganic and organic soils.

Explanation:

A pea plant with purple flowers is crossed with a pea plant that has white flowers. All the offspring are purple, so we can conclude that

Answers

Answer:

That the purple trait is dominant and the purple pea plant has a gene type of PP and the white flower has a gene type of pp

Explain two ways to study biotic and abiotic factors within an ecosystem.

Answers

[tex] \sf{ \huge}{ \colorbox{pink}{ \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: }}[/tex]

Ecologists study both biotic and abiotic factors and how they interact. Therefore, ecologists often use methods and data from other areas of science, such as geology, geography, climatology, chemistry, and physics.

Abiotic factors refer to non-living physical and chemical elements in the ecosystem. Abiotic resources are usually obtained from the lithosphere, atmosphere, and hydrosphere. Examples of abiotic factors are water, air, soil, sunlight, and minerals

[tex] \sf{ \huge}{ \colorbox{pink}{ \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: }}[/tex]

Through geology and geography, we can study biotic and abiotic factors within an ecosystem.

How can you study biotic and abiotic factors within an ecosystem?

The interactions between biotic factors, such as organisms like flora and fauna, and abiotic factors.

For example, all animals (biotic factors) breathe in oxygen (abiotic factor). All plants (biotic factor) absorb carbon dioxide (abiotic factor) and need water (abiotic factor) to survive.

Thus, geology and geography, are the two ways to study biotic and abiotic factors within an ecosystem.

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What is an example of codominance?
A flower with pink petals that results from the cross
a of a plant with red petals with a plant with white
petals
b Blood type o
c Skin color
A flower with red and white petals that results from
d the cross of a plant with red petals with a plant with
white petals

Answers

Answer:

Explanation:

dnanananans

Answer:

It’s D

Explanation:

I jus did it.

Which two organelles are involved in the move-
ment of a cell in its environment?
a. microubules and centrioles
b. fiagella and contractile vacuoles
c. centrioles and the cell wall
d. cytoskeleton and lysosomes

Answers

Answer:

Flagella and contractile vacuoles

A garden pea plant possesses one allele coded for yellow seed colour and one a coded for green seed colour. Which statement is true?

Answers

What are the statements? We can’t say which is true if we don’t know what the statements are

A green pea plant possesses one allele coded for yellow seed color and one a coded for green seed color. The true statement is the individual is heterozygous for the seed-color allele.

What are alleles?

At a given genomic location, an allele is one of two or more variants of DNA sequence (a mono base or a segment of bases).

For any given genomic location where such variation exists, an individual inherits two alleles, one from each parent. If both alleles are identical, the person is similar for that allele.

Thus, the true statement is the individual is heterozygous for the seed-color allele.

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HELP ME!!
what is the Chemical Equation for Cellular Respiration???
(I am bad at biology!!)

Answers

Answer:

Cellular Respiration: C6H12O6 + 6O2 → 6CO2 + 6H2O.

Explanation:

C6H12O6 + 6O2 —> 6CO2 + 6H2O

A strand of RNA has the sequence AUUGCGCGAA. What explanation can be made about how this strand came to be?
A. The RNA strand formed from the rearrangement of the bases in a DNA strand.
B. The RNA strand broke off from a DNA strand that had a much longer genetic code.
C. The RNA strand was transcribed from a DNA strand with the sequence TAACGCCTT.
D. The RNA strand was translated from a DNA strand that had the sequence UAACGCCUU.

Answers

The answer is C. I’m pretty sure

A strand of RNA with the sequence "AUUGCGCGAA" has been transcribed from a DNA strand with the sequence "TAACGCCTT". Thus, the correct option is C.

What is Transcription?

Transcription is the process of formation of mRNA from the DNA in the nucleus of cell. The machinery involving all the enzymes and nucleotides are present in the nucleus for the development of mRNA. mRNA is the messenger RNA which is transcribed from DNA.

The sequence of mRNA formed from the DNA in a cell is complementary to the leading strand of the DNA in which only the thymine residues are replaced by the uracil residues. Adenine base pairs with uracil and thymine residues base pairs with adenine residues. Cytosine residues base pairs with guanine residues and vice versa.


Thus, the sequence of DNA from which mRNA has been synthesized is "TAACGCCTT".

Therefore, the correct option is C.

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HHEELLPPP!!!! this is also due in 45 mins

This is all in the legs btw it would help a lot if u could answer it
Look online and find out what each muscle group does and what at least 5 muscles do and list that information.
Flexor Group-
Peroneal Group-
Hamstring Group-
Gluteal Group-
Quadricep Group-
Extensor Group-
Sartorius Group-
Adductor Group-

Answers

Answer:

Flexor Group- group of five muscles mainly in charge of movements of forearm, hand and fingers.

Peroneal Group- these muscles play a role in the movements of the ankle joint  and support of the foot.

Hamstring Group- The hamstrings are a group of muscles and their tendons at the rear of the upper leg. They include the biceps femoris, semitendinosus, and semimembranosus. The hamstrings flex the knee joint and extend the thigh to the back side of the body.

Gluteal Group- The gluteal muscles are a group of three muscles which make up the buttocks: the gluteus maximus, gluteus medius and gluteus minimus. The three muscles originate from the ilium and sacrum and insert on the femur.

Quadricep Group- The Latin translation of 'quadriceps' is 'four headed,' as the group contains four separate muscles: the vastus lateralis, vastus medialis, vastus intermedius, and the rectus femoris. Each of the vastus muscles originates on the femur bone and attaches to the patella, or kneecap.

Extensor Group- The superficial extensors of the forearm are a group of six muscles situated in the superficial posterior compartment of the forearm. These muscles include the brachioradialis, extensor carpi radialis longus, extensor carpi radialis brevis, extensor digitorum, extensor carpi ulnaris  and extensor digiti minimi.

Sartorius Group- couldnt  find anything

Adductor Group- The adductors are a group of muscles, as the name suggests, that primarily function to adduct the femur at the hip joint. Although they are all located somewhere along the medial side of the thigh, they originate in different places at the front of the pelvis.

Explanation:

Brainliest pleeeeeeeeeeease

12. Why does a New Moon appear black to us?

Answers

Explanation:

the moon does not have an atmosphere so light does not scatter therefore the moon looks black.

Answer:

as its "new moon" phase the moon is always black.it happens at the time of the month when the moon passes through the same part of the sky as the sun and as such the moon's dark or unilluminated side facing the earth so there really is nothing to see

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