Which situation is a result of crossing-over during meiosis?
A
Genes are duplicated exactly, ensuring that offspring will be
identical to the parents.
B
Chromatids thicken and align themselves, helping to ensure
genetic continuity.
с
Genes are rearranged, increasing the variability of offspring.
D
Chromatids fail to sort independently, creating abnormal
chromosome numbers.

Answers

Answer 1

Answer:

C

Explanation: Genes are rearranged due to crossing over and offspring can vary in traits and appearance


Related Questions

State the " Central Dogma of Biology"​

Answers

Answer:

the central dogma of biology explores how genetic information in our cells goes from DNA to RNA to proteins.

Answer:

The central dogma states that the pattern of information that occurs most frequently in our cells is: From existing DNA to make new DNA (DNA replication?) From DNA to make new RNA (transcription) From RNA to make new proteins (translation).

Explanation:

Hope it helps

FOLLOW MY ACCOUNT PLS PLS

8. What are NAD+ and FAD? What do they become?

Answers

Answer:

What are NAD+ and FAD? ... They become NADH AND FADH2 when they pick up the hydrogens during Glycolysis (NADH only), and the Krebs Cycle.

Answer:

syteysertersgeg

Explanation:

In which experimental set up shown would you expect the Elodia plant inside a test tube to produce the least amount of oxygen

Answers

Answer:

Due to less concentration of carbondioxide gas.

Explanation:

Elodia plant inside a test tube produces the least amount of oxygen due to limited carbondioxide gas that is necessary for photosynthesis process. If a test tube has less amount of carbondioxide gas which is a reactant in photosynthesis so in the end the Elodia plant generates less amount of glucose as well as oxygen while on the other hand, if there is more carbondioxide gas is available to Elodia plant, more oxygen as well as glucose is produced.

Examine equations A and B below. Then answer the questions.
(A) 2H2 + O2 ® 2H2O (B) H2CO3 - H + HCO3


20. Which equation represents the formation of water?

21. Which equation represents the formation of an acid solution?


22. How many atoms of oxygen (O) are on both sides of equation

23. How many atoms of hydrogen (H) are on both sides of equation

24. How many atoms of hydrogen (H) are on both sides of equation

25. In which equation are carbonic acid molecules broken apart into
hydrogen ions and bicarbonate ions?

Answers

Answer: 20. A 21. B 22. A=2, B=3 23. A=4, B=3 25. B

Explanation: A has H2O (water). B has a hydrogen ion, so acidic.

In B H2CO3 is carbonic acid

The loss of hydrogen atoms leads to the formation of acids and the hydroxide forms bases. Equation A represents the formation of water, and equation B shows the acidic solution.

What is a chemical reaction?

Chemical reactions are said to be involved in producing products from the reactants that undergo chemical changes. Water is formed by reacting the four hydrogens and one oxygen molecule as:

2H₂ + O₂ → 2H₂O

Equation B represents the formation of the acid as hydrogen ions are released along the product. The proton donation (hydrogen ion) is the characteristic property of the acids.

There are 2 oxygen atoms in equation A, and 3 atoms of oxygen in equation B.

There are 4 hydrogen atoms in equation A and 2 atoms of hydrogen in equation B.

In equation B, carbonic acid breaks to form hydrogen ions and bicarbonate ions as:

H₂CO₃ → H⁺ + HCO₃

Here, carbonic acid dissociates a proton that makes the solution acidic.

Therefore, the first equation represents the formation of water by oxygen and hydrogen atoms.

Learn more about a chemical reactions, here:

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What are some examples of anatomical homologies that are analogous?

Answers

Answer:

Explanation:

The arm of a human, the wing of a bird or a bat, the leg of a dog and the flipper of a dolphin or whale are homologous structures. They are different and have a different purpose, but they are similar and share common traits.

does the sand at night have less kinetic energy than the sand on a sunny day?​

Answers

because the sun heats up the sand causing the atoms to move much faster than at night

PLS HELP!!!
During science class, Sofia drew a picture similar to the one above. Which phrase would appear in the caption box on the right side of the figure?

Group of answer choices

low sound

long wavelength

short wavelength

low frequency

Answers

Answer: low sound

Explanation:

why does food get cold but drinks get hot​

Answers

Answer:

it might be because of the room temperature.

Explanation:

since drinks are colder than the room temperature they will get warmer to be the same as the room temperature and because food is hotter than room temperature it gets colder to be the same as the room temperature. dont quote me on that just a guess

tRNA molecules deliver amino acids to ribosomes where the amino acid next
A. forms an ionic bond with another amino acid
B. is deaminated and catabolized
С. becomes an anticodon
D. is covalently bonded to a growing polypeptide
E. forms hydrogen bonds with esters

Answers

Answer:

tRNA molecules deliver amino acids to ribosomes where the amino acid next becomes an anticodon (option C).

Explanation:

A tRNA molecule is able to deliver amino acids to the ribosomes for protein synthesis, forming an anticodon that complements the codon of the mRNA being translated. The mRNA molecules are responsible for conducting the genetic code —obtained from DNA transcription— to be translated by the ribosomes. This code is established by sequences of three nucleotides, called codons, which encode different amino acids.

What happens when mRNA molecules expose codons to ribosomes is that a tRNA molecule containing a complementary anticodon is formed, which is conducted to the ribosome to bind to the codon. This allows, according to the genetic code, the formation of a protein with a specific sequence of amino acids.

tRNA molecules deliver amino acids to ribosomes where the amino acid  - С. becomes an anticodon.

During translation tRNA, molecules deliver amino acids to the ribosome and bind to this codon. It is a complementary anticodon to this codon.

Each tRNA molecule has two distinct endsone end binds to a specific amino acidthe other which binds to the corresponding mRNA codon. The first tRNA transfers its amino acid to the amino acid on the newly arrived tRNA, and a chemical bond is made between the two amino acids.

Thus, tRNA molecules deliver amino acids to ribosomes where the amino acid  - С. becomes an anticodon.

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Cells in the body needs what for energy

Answers

Answer:

Mostly glucose

Explanation:

Answer:

Different Cell Types Require Different Fuel Molecules. Red blood cells rely on glucose for energy and convert glucose to lactate. The brain uses glucose and ketone bodies for energy. Muscle cells use fatty acids, glucose, and amino acids as energy sources.

Fossil fuels, such as oil and natural gas, are primarily formed from the remains of what?
phytoplankton
mammals
bacteria
dinosaurs​

Answers

Answer:

phytoplankton

Explanation:

Answer:

Its phytoplankten.

Explanation:

I hope I spelled it right

How can you recycle your trash?

Answers

Answer:

when people recycle they really just need to pickup after themselves

Answer:

cleaning up after yourself, learning the proper way to decompose of things, throw trash out and recycle plastic by picking it up, clean up cans, and tell others to help out!

Science. Help I really need this giving brainliest to the person with the correct answer, please explain your answer...........

Answers

Answer:

A and B

Explanation:

Plant cells are different from animal cells because they are usually -

Answers

A plant cell contains a large, singular vacuole that is used for storage and maintaining the shape of the cell. Animal cells have many, smaller vacuoles. Plant cells have a cell wall, as well as a cell membrane. Animal cells have a cell membrane, but NO CELL WALL.

Answer:

Plant cells have a large, singular vacuole that is used as a storage and to maintain the shape of the cell.  Even though animal cells have vacuoles, they are smaller.  Plant cells have a cell wall and a cell membrane.  Animal cells only have a cell membrane, and no cell wall.

Explanation:

Select all that apply.


The first known pandemic in A.D. 542, struck which parts of the world?



Australia

Middle East

North America

South America

Asia

North Africa

Europe
PLEASE ANSWER CORRECTLY

Answers

I think it's Asia.....

Lab: Natural Selection answer in the link pls 50 points and

Answers

We cannot see the image, tell me in the comments what you want me to answer maybe i can help you.

What can you infer about the Maastrichtian Age from its name?

Question 7 options:

A)

That is was an extremely long, complicated age.


B)

Rocks from that era were first studied near the city of Maastricht, Netherlands


C)

That is was the most strict geologic age in history.


D)

Nothing - the names of geologic ages are arbitrary.

Answers

Answer:

The B) is answer

my answer have to be atleast 20 characters long oof

When does gamete production occur?

Answers

Gametes are formed through meiosis, in which a germ cell undergoes two fissions, resulting in the production of four gametes. During fertilization, male and female gametes fuse, producing diploid

What is the best explanation for the difference in shape between the two drops shown below

Answers

Answer:

A

Explanation:

I think the answer is A because Hexane is a non-polar solvent and A is the only answer choice that says its non polar. Im sorry if it is incorrect

The best explanation for the difference in shape between the two drops given in image is - Option D. glycerin is polar and has greater cohesion than hexane.

Polarity is the physical characteristics of liquid that allows them to stick to other substances which is called adhesion. Polar molecules also attracted to itself, and this physical trait called cohesion. Water's most common form in the air, a droplet is formed due to this cohesion.

Hexane is a nonpolar solvent that has less electro negativity charge therefore, they do not have hydrogen bonding and there is less cohesion in the molecules.Glycerin is a polar solvent that allows its molecules to attract itself that is cohesion present and lead to more of droplet shape.

Thus, the correct answer is - option D.

Learn more about cohesion:

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Only answer if you know the answer

Answers

Answer:

B. A helicase enzyme unwinds the DNA molecule, then corresponding nucleotides are added to the separated original strand forming two separate semiconservative molecules

Explanation:

DNA Replication is an important phenomenon as far as cell division is concerned. It is the process whereby a DNA molecule doubles its content or forms two DNA molecules from one.

In the semi-conservative model of DNA replication, an enzyme called DNA helicase unwinds the double stranded DNA molecule into two single strands. The single strands are then used as template for DNA polymerase to synthesize another molecule of DNA. Hence, two separate DNA molecules comprising of one old strand and one new strand.

PLEASE ANSWER.

Purple is dominant to white. A flower with the alleles PP (purple) is
crossed with a flower with alleles pp (white). What is the percent chance
that their offspring (babies) will be purple?

0%
50%
100%

Answers

Answer:

100% P is dominate there for all matches will be Pp this mean it will either be purple or a mixture of both (pink)

Explanation:

the chances will be 100% Purple flowers

Which organelle is the powerhouse of the cell and produces energy?

Answers

Answer:

mirtochandria

Explanation:

The mitochondria is the powerhouse of the cell!

What are the components of blood ​

Answers

Explanation:

Blood is a specialized body fluid. It has four main components:

plasma, red blood cells, white blood cells, and platelets.

Blood has many different functions, including: transporting oxygen and nutrients to the lungs and tissues.

why are there so many stages in meiosis?

Answers

Answer:

In many ways meiosis is a lot like mitosis since cell division occurs twice during meiosis one starting cell can produce four gametes ( egg or sperm ) in each round of division cells go though four stages prophase, metaphase anaphase, and telophase

Explanation:


Explain how the stomach Depends on other body systems to carry out its role in breaking down food molecules.

Answers

The whole body works together, as a “team.”If one of the parts of the body won’t work together as a team, everything will get messed up. The stomach muscles churn and mix the food with digestive juices that have acids and enzymes, breaking it into much smaller, digestible pieces. An acidic environment is needed for the digestion that takes place in the stomach.

Complex food molecules that are consumed by organisms must be broken down in order to be used by cells to support growth or release energy.
True
False

Answers

Answer:True

Explanation:

The complex molecules are broken down by the digestive system. If the molecules were not to be broken down they would block the system

Answer:

TRue

Explanation:

Long-term activation by nuclear receptors differs from the more transient membrane receptor signaling for what reason

Answers

i have no idea but i think because long term activation is long term rather than nuclear. this is wrong

What are the possible benefits of hybridization?

Answers

Answer: Advantages of hybridization are passing down favorable traits and prolonging the survival of a threatened or endangered species.

Hope this helps! ^^

Answer:

Advantages of hybridization include passing along favorable traits and prolonging the survival of a threatened or endangered species, but a disadvantage is that hybrid animals have more difficulty finding mates and successfully breeding. Hybridization occurs naturally and through human initiation.

7. Before entering Mitosis what most important feature happens

Answers

Answer:

Interphase

Explanation:

This happens before mitosis. This is when cells grow and copy DNA.

Hope this helps!

Also I like your pfp!

Answer:
Interphase

Explanation:

Before a cell can enter the active phases of mitosis, however, it must go through a period known as interphase, during which it grows and produces the various proteins necessary for division.

hope this helped!!

The theory,of evolution states that all living things had a single common ancestor. The translation between mRNA and amino acids is the same for all living thing. Does the second statement support the theory of evolution ?

Answers

Answer: the theory of evolution states that all living things we can identify descend from the Last Universal Common Ancestor. It is not that the translation process between mRNA and amino acids is universal, but that the underlying genetic code relating DNA nucleotide triplets (codons) to amino acids is the same for almost all living things.

Explanation: The genetic code ‘tells’ mRNA which the sequence of amino acids in a protein and when to stop adding amino acids. The DNA . triplets, called codons, code for 20 amino acids and a STOP signal. The code is identical in almost all cases, but there are variation, mostly found in mitochondrial DNA. But even when these variants exist, most of the code is the same as in other living organisms. For example the codon AGG normally codes for the amino acid serine but in arthropod mitochondria it codes for lysine. These very few and minor changes tend to confirm the single ancestry of the code and how well it has been conserved through billions of replications

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