What is needed for evolution to take place?

Answers

Answer 1

Answer:

genetic variation

Explanation:


Related Questions

Which of the following is a consumer? *
1 point
Seed
Grass
Insect
Fruit
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Answers

insect is a consumer im pretty sure

Insect is the answer.

.. .. ..

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Answers

Answer:

daddy ;-0

Explanation:

Answer:

Your Answer is B

Explanation:

By burning coal and fossil fuel and  natural gas, it causes in the air

I'll give Brainlyest if I can just please hurry

Answers

Answer:

hi

Mostly will be earthquake

Answer:

I would say earthquakes, and i also recommend using jiskha to get answers to schoolwork, it gives better answers then brainly. Good luck:)

Explanation:

A guiding question instead of a hypothesis is most likely used in which of the following?

A. Scientific investigation
B. Laboratory experiment
C. Laboratory test
D. Repeated trials​

Answers

The answer is C lmk if you have any questions

Evolution is a result of–
a. natural selection.
b. species not adapting quick
enough.
c. competition for resources.
d. harmful mutations.

Answers

Answer:

c

Explanation:

which phase of cell division is shown?

Answers

Answer:

cell division is shown in anaphase

A scientist does an experiment in which she removes the offspring of rats from their mother at birth and has her genetics students feed and rear the offspring. Assuming that the students do not lick and groom the baby rats as the mother rats normally do, what long-term behavioral and epigenetic effects would you expect to see in the rats when they grow up

Answers

Your answer is going to be when the rats grow up

Which 4 body sydtems interact to allow a person to sneeze

Answers

Answer:

I think four body system is Muscular, immune, nervous, respiratory.

Explanation:

Please Help Me i need a good grade!
FAST!!!!!!

Answers

Answer:

it's the second one/B because it's the only one that is correct :)

Plz help asap 1 and 2 plz

Answers

Answer:

1- Ans:Molecules

2- Ans:Atoms

Beetles in a certain population can either be green color or brown colored. A change in the environment has caused the green colored beetles to become more visible and heavily prayed upon by other animals. Because of this change in the environment, what will most likely happen to this beetle population.?


A. The number of brown colored beetles will increase

B. The green colored beetles reproduce at a faster rate

C. The green colored beetles will change their color to brown

D. The population of green colored and brown colored beetles will become extinct

Answers

Answer:

A. i think

Explanation:

if green is being prayed on more, than less green are gonna be produced and brown will become more prominent. if that makes sense.

The service box is an area on the court that 1 point the person serving must stand in. the ball must land in to be a playable serve. the person returning the serve must be standing in before a server can serve ​

Answers

Answer:

Both players on the serving doubles team have the opportunity to serve and score points until they commit a fault *(except for the first service sequence of each new game).

The first serve of each side-out is made from the right-hand court.

If a point is scored, the server switches sides and the server initiates the next serve from the left-hand court.

As subsequent points are scored, the server continues switching back and forth until a fault is committed and the first server loses the serve.

When the first server loses the serve the partner then serves from their correct side of the court (except for the first service sequence of the game*).

The second server continues serving until his team commits a fault and loses the serve to the opposing team.

Once the service goes to the opposition (at side out), the first serve is from the right-hand court and both players on that team have the opportunity to serve and score points until their team commits two faults.

In singles the server serves from the right-hand court when his or her score is even and from the left when the score is odd.

Explanation:

What can HIV become? (write it out)

Answers

HIV came become AIDS (acquired immunodeficiency syndrome) if not treated.

Both prokaryotic and eukaryotic cells use ________ to turn certain genes on or off.


Group of answer choices


RNA polymerase


enhancers


activators

Answers

The answer is RNA polymerase

Both prokaryotic and eukaryotic cells use RNA polymerase to turn certain genes on or off. The correct option is A.

What is RNA polymerase?

RNA polymerase, or more specifically DNA-directed/dependent RNA polymerase, is a molecular biology enzyme that synthesizes RNA from a DNA template.

The RNA polymerase enzyme is a large complex composed of many subunits. The prokaryotic RNA polymerase has four subunits that can transcribing all types of RNA.

These enzymes in eukaryotes have eight or more subunits that aid in the attachment and processing of DNA during transcription.

RNA polymerase (abbreviated RNAP or RNApol), or more specifically DNA-directed/dependent RNA polymerase (DdRP), is a molecular biology enzyme that synthesizes RNA from a DNA template.

RNA polymerase is used by both prokaryotic and eukaryotic cells to turn genes on and off.

Thus, the correct option is A.

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Answers

Answer:

The answer is gravity.

Explain the relationship between the Fossil Record and the Theory of Evolution.

(3 or more sentences)

Answers

Image result for Explain the relationship between the Fossil Record and the Theory of Evolution.
Fossils are important evidence for evolution because they show that life on earth was once different from life found on earth today. Paleontologists can determine the age of fossils using methods like radiometric dating and categorize them to determine the evolutionary. Hope this helps! Mark brainly pls!

how is a trait passed down from parents to offspring USE OWN WORDS

Answers

A trait is a characteristic, such as color or size, that is inherited by an offspring from its parents. The genes that control a trait come in pairs, one gene from each parent. We represent these gene pairs by writing a combination of two letters. For example, if one parent contributes a gene for blue eyes (c), and other parent contributes a gene for brown eyes(C), then we write the offspring’s eye color trait as Cc. This combination, of the two genes that determine the trait, is called a genotype. If gene pair contains a dominant allele, the the offspring will show this dominant trait

Which of the following is a 5-carbon sugar?
Glucose
Fructose
Ribose
Sucrose​

Answers

Answer:

ribose

Explanation:

Answer:

Ribose & deoxyribose sugars. Ribose is a single-ring pentose [5-Carbon] sugar.

When a Pp-genotype plant is bred with a pp-genotype plant, what percentage of the offspring is likely to have white flowers?

Answers

The answer is 25% if the big P stands for white

4. Identify the compounds your cells can break down to obtain energy.

Answers

Answer:

glucose and oxygen which ultimately get transferred into ATP.

Explanation:

Beginning your introduction to your research paper with a question is a great way to capture the reader's interest.


True
False

Answers

Answer:

True

Explanation:

Yes it is since it intrigues to reader to go deeper into your research paper. In addition, it also gives you good dialoge for what you write/say next.

land where it is possible to grow crops is called
A.organic land
B.agricultural land
C.vegetative land
D.All of the above

Answers

D. All of the above

Why is color NOT the best property to identify minerals A) different minerals can have the exact same colors B) all minerals have the same streak C) color can change due to impurities D) all minerals have one type of element

Answers

Answer:

b

Explanation:

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Answers

d, because she wants to monitor the wildlife.

Answer:

I think that the answer would be C.

Explanation:

Its saying how could she best monitor the impact of the manufacturing plant on populations in this ecosystem. She could best monitor it by collecting data.

Which event occurred during the Space Race

Answers

Answer:

On October 4, 1957, a Soviet R-7 intercontinental ballistic missile launched Sputnik (Russian for “traveler”), the world's first artificial satellite and the first man-made object to be placed into the Earth's orbit. Sputnik's launch came as a surprise, and not a pleasant one, to most Americans.

Explanation:

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In North America, the eastern spotted skunk mates
in late winter, and the western spotted skunk mates
in late summer. Even though their geographic
ranges overlap, the species do not mate with each
other. What most likely prevents these two species
from interbreeding?
A. habitat isolation
B. gametic isolation
C. geographic isolation
D. reproductive isolation

Answers

The answer is gonna be B

Reproductive isolation is a mechanism through which species do not get to interbreed. Option D. reproductive isolation

What is reproductive isolation?

This is a mechanism through which different species or populations do get to mate and produce fertile offspring. This mechanism allows the accumulation of genetic differences and favors speciation.

There are different barriers that inhibit or interrupt the genetic flow between different species.

Reproductive barriers prevent mating between two or more species. There are two types of barriers,

prezygotic ⇒ that avoids fertilization between individuals of different species, postzygotic ⇒ that impedes the zygote to develope and reach the adult stage.

Pre-copulatory o pre-ziygotic:

• Ecological or by habitat isolation;

Seasonal or temporal;

• Séxual o ethologic;

• Mechanic;

• Gametes incompatibility.

Postzygotic mechanisms or barriers include

• Hybrid inviability,

• Hybrid sterility,

• Cytoplasmic interactions.

In the exposed example occurs a seasonal difference between the mating period of the eastern spotted skunk and the western spotted skunk.

Probably, if both of them would mate during the same season and in the same area, they could reproduce.

However, since their mating season differs, individuals from each species do not get to cross and hence, produce fertile offspring.

Option D. reproductive isolation is what most likely prevents these two species from interbreeding

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1. Which of the following solid substances could be classified as the most dense?

A. Solid A

B. Solid B

C. Solid C

D. It cannot be determined from the given information.

Choose The Correct one answer.

Answers

D I believe it work hope this work

LO NECESITO URGENTEMENTE, PORFAVOR AYUDENME INSTRUCCIONES: lee el siguiente texto y completa las ideas con las siguientes palabras, (pueden sobrar algunas): mitótico, meiótico, haploide, somáticas, unión, gametos, fecundación, genética, variación, iguales, diferentes.


Reproducción sexual

La reproducción sexual consisten en la ___________ de dos gametos uno femenino y otro masculino, para formar un nuevo individuo con características provenientes de ambos progenitores. Los ___________ son células especializadas que se forman por un proceso __________ y tiene en su núcleo la mitad de la información __________ de un organismo, por lo que reciben el nombre de células ___________ de manera que cuando se une sus cromosomas se forman células diploides característico de la especie. La característica más importante de este tipo de reproducción es la ___________ genética que implica que los descendientes tengan características de sus dos progenitores, por lo que son ___________ a ellos. El proceso en el que se une las células sexuales se le conoce como ___________. En los animales esta pude ser interna o externa.

Answers

Answer:

La reproducción sexual consisten en la unión de dos gametos uno femenino y otro masculino, para formar un nuevo individuo con características provenientes de ambos progenitores. Los gametos son células especializadas que se forman por un proceso meiótico y tienen en su núcleo la mitad de la información genética de un organismo, por lo que reciben el nombre de células haploides de manera que cuando se une sus cromosomas se forman células diploides característico de la especie. La característica más importante de este tipo de reproducción es la variación genética que implica que los descendientes tengan características de sus dos progenitores, por lo que son diferentes a ellos. El proceso en el que se une las células sexuales se le conoce como fecundación. En los animales esta pude ser interna o externa.

Explanation:

Los gametos (óvulos y espermatozoides) son células germinales especializadas que se desarrollan a partir de un proceso llamado gametogénesis (espermatogénesis en machos y ovogénesis en hembras). El proceso de gametogénesis implica un tipo de división celular llamado 'meiosis' donde la cantidad de cromosomas se reduce a la mitad. En humanos, el número cromosómico diploide (2n) de 46 cromosomas se reduce a un número haploide (n) de 23 cromosomas. La fecundación es el proceso por el cual los gametos se fusionan durante la reproducción sexual para producir un cigoto diploide. En la reproducción sexual, el aumento de la variación genética en la progenie es un resultado de tres procesos diferentes: la unión aleatoria entre gametos durante la fecundación, la distribución independiente de los cromosomas durante la gametogénesis y el entrecruzamiento (recombinación o crossing over) entre cromátidas de cromosomas homólogos durante la meiosis. Finalmente, en animales, la fecundación puede ser interna, la cual se produce mediante la unión de los gametos dentro del cuerpo de la hembra (por ejemplo, gallina, leona, cebra, etc.), o fecundación externa, donde la fusión de gametos se produce en el ambiente externo (por ejemplo en peces, sapos, ranas, etc.).

The main function of cell respiration is to produce A. glucose B. NADH and FADH2. C. CO2. D.mitochondria E. ATP.​
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Answers

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Which of the following types of cells have cell walls?
A. Red Blood Cell
B. Nerve Cell
C. Cork Cell
D. Animal Cells

Answers

Answer:

cork cells

Explanation:

A cork cell has a cell wall that has a waxy substance that is impermeable to gases and water called suberin.

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