Are new variations random?

Answers

Answer 1

Answer:

yes

Explanation:

yes its kind of hard to explain but it is


Related Questions

how does natural selection impact the way a population adapts?

Answers

Answer:

The organisms with the more desirable traits will survive and pass on their genes.

Explanation:

"Natural selection" is pretty much "survival of the fittest." This means that the organisms who have a better chance of surviving and reproducing will control the way a species adapts. For example, there may be a mutation in a species of moths that make their wings more brown instead of yellow (just threw a random color out there). Well, the moths born with the mutation that turns their wings brown will likely live longer and be able to reproduce more because they can blend in with their environment better. So, as a result, their mutation can get passed on and the species will adapt to have more moths with brown wings.

How does sugar leave the phloem?

Answers

The high turgor pressure drives movement of phloem sap by “bulk flow” from source to sink, where the sugars are rapidly removed from the phloem at the sink. Removal of the sugar increases the Ψs, which causes water to leave the phloem and return to the xylem, decreasing up

During strenuous exercise, lactic acid fermentation begins because the muscle cells are not getting enough


water

glucose

oxygen

ATP

Answers

Answer:

oxygen

Explanation:

Without oxygen aerobic respiration cannot occur. Therefore ATP is produces by anaerobic reparation which is from glycolysis only. Lactate/ lactic acid is formed when glycolysis is the only production of ATP.

16.
What would happen if DNA and RNA did not operate according to principles of
directionality?

Answers

Answer:

RNA and DNA wouldn't be read in the proper order and would code for different proteins, with devastating consequences.

Explanation:

Directionality is important in DNA and RNA because it ensures that all transcription and translation occurs in an organized and uniform manner. Without directionality, the DNA and RNA machinery would get confused and read the nucleotides into the machinery backward, which would give the sequence an entirely different meaning.

PENN

Can someone pls check

Answers

Mitosis only

OPTION A

Mitosis is simply the process of cell division.

Meiosis is the process of producing gametes (eggs and sperm), which is important for sexual reproduction.

Which statement about identical twins is TRUE?

A. They have identical DNA in all of their cells.

B. They are not genetically identical to each other.

Answers

Answer:

A. They have identical DNA in all of their cells.

Explanation:

Identical twins are also known as monozygotic twins. They result from the fertilization of a single egg that splits in two. Identical twins share all of their genes and are always of the same sex. In contrast, fraternal, or dizygotic, twins result from the fertilization of two separate eggs during the same pregnancy.

Answer:

A. They have identical DNA in all of their cells.

Explanation:

All of the cells in your body share the same DNA as was found in that first cell.

the gradual development of a new organism from preexisting organisms is called

Answers

Answer:

Evolution

Explanation:

The question is What serves as the ultimate control center of the body overseeing all communication among the organ systems?

Answers

Answer:

nervous system

Explanation:

the cns oversees every action our body does

Cells created by meiosis can be
represented by which of the following?
A.2B
B.B
C.2N
D.N

Answers

Answer:

D. N

Explanation:

Meiosis is a kind of cell division which produces daughter cells that are genetically different from the parent cell and have a reduced number of chromosomes (by half).

Meiosis occurs only in reproductive cells to produce gametes. If a diploid (2n) cell undergoes meiosis, a haploid (n) daughter cell will result. This means that the chromosome number has been reduced by half in order to maintain the chromosomal number of the next generation.

is eczema recessive or dominant? explain why or how.

Answers

Answer:

When caused by CARD11 gene mutations, atopic dermatitis has an autosomal dominant inheritance pattern , which means one copy of the altered CARD11 gene in each cell is sufficient to cause the disorder.

Explanation:

pls mark brainlest

You have learned that scientists have found physical evidence of the Flood. In this project you will think about Noah and his construction of the ark.



Pretend that you are a newspaper reporter, and you are able to interview Noah. Then write a newspaper article about your interview.



Answer these questions.

What kinds of questions would you ask him?



Write a news article on your interview with Noah. (100 words or more is fine)
Need help asap just answer write the article the first 1 i already answered just copy pasted the questions

Answers

Answer:

We got a chance to speak to Noah the Ark builder. Many people of the town have been wondering what Noah has been building lately. We asked him what was his objective and he said "A great flood like no other will come, water from the sea will fall from the air. Whoever is in the ark shall be safe. Two of each type of animal on earth shall come to my ark for shelter. The storm will be so great it will knock out all who does not inhabit the ark."It is hard to understand what he means by these statements but who knows maybe his boat will take him somewhere. The people of the town have been calling him insane, since no one would need a boat that big.

(I'm guessing that you mean the interview was before the flood since everyone died after.)

If there is mold on cream cheese, you should cut at least one inch around and below the moldy spot, making sure not to touch the mold with the knife

true

false

Answers

Answer:

false

Explanation:

the mold means that its expired and is probably growing. Throw it out.

It is not safe to eat

What makes Protists different from the Bacteria kingdoms?

A. They are easier to find.

B. Their cells have a nucleus.

C. They are bigger.

Answers

Answer:

B. Their cells have a nucleus.

Explanation:

The primary difference between them is their cellular organization. Bacteria are single-celled microbes and are prokaryotes, which means they're single-celled organisms lacking specialized organelles. ... In contrast, protists are mostly single-celled eukaryotic organisms that are not plants, fungi, or animals.

Answer:

B. Their cells have a nucleus.

Explanation:

Protists are different from the Bacteria kingdom because, their cells have a nucleus.

Why is the percentage of food eaten a good
number to use? Explain.
I
Intro

Answers

Answer:

The percentage of food gives an idea about the food availability for the species of organisms. If the food percentage is high the species is observed to be more successful; on the other hand if the percentage is low the species is found to shrink in numbers.

hope it helps

Just by looking at the guinea pig, you would be able to tell if its genotype were HH or Hh.
A. True

B. False

Answers

Answer:

it depends on where your going to be looking if you look at the genitals then A true but, if your looking at just the body and head B

Answer:

B. False

Explanation:

HH and Hh have the same phenotype, so you could not determine the genotype of the guinea pig just by looking at it.

explain the difference between a prokaryotic cell and a eukaryotic cell.​

Answers

Answer:

Eukaryotic cells have a membrane-bound nucleus.

Prokaryotic cells do not. The nucleus is where Eukaryotic stores their genetic information.

Mike has a problem with his testosterone. He is unable to produce enough. Which will most likely be affected by his inability to produce testosterone? Select two options.

Answers

Answer:

Fruits will be a great choice. Such as strawberries.

Explanation:

Study the diagram of gametogenesis where egg cells and sperm cells
undergo meiosis I and meiosis II. Note the number assigned to each cell.
Identify the number of chromosomes in the different cells, represented
by a circle, by writing the symbol N for haploid and 2N for the diploid.
Write your answers on a separate sheet of paper.​

Answers

A diploid cell undergoes meiosis to produce one egg and 3 polar bodies with 23 chromosomes each.

What happen during the egg formation?

During egg formation in the ovary, Primary oocyte (diploid) having 46 chromosomes undergoes meiosis I to form one secondary oocyte and one first polar body.

Both the secondary oocyte and one polar body are haploid having 23 chromosomes.  Both daughter cells then undergo meiosis II, the first polar body divides to give two polar bodies and the secondary oocyte divides by meiosis II to form one ovum.

Therefore, during egg formation in the reproductive system, a diploid cell (a primary oocyte) undergoes meiosis to produce one egg and 3 polar bodies with 23 chromosomes each.  

To learn more about meiosis click here:

https://brainly.com/question/11622266

#SPJ2

Which process produces genetically identical cells?

A. Meiosis

B. Mitosis

Answers

Answer:

mitosis produce genetically identical cells

Answer:

B mitosis i think .......

how might a country run out of water​

Answers

Answer

Along with decreasing rainfall comes rising temperatures. By 2050 the U.S. could be as much as 5.7°F warmer, and extreme weather events, such as heatwaves and drought, could be more intense and occur more frequently. As temperatures warm, evaporation increases, further decreasing water in lakes, reservoirs, and rivers.

Read the following selection and answer the question. On a September day in 1999, people began to notice that Lake Jackson in the Panhandle region of northern Florida was shrinking. Within a few days, it was almost gone. A sinkhole had opened beneath the lake and drained it, along with all of its inhabitants including fish and alligators. As aquifers lose water, rock and soil layers can become weaker and less capable of supporting overlying layers of earth and any human structures built upon them. In such cases, the land surface above may subside, or sink. Sometimes subsidence can occur locally and suddenly in the form of sinkholes, which are areas where the ground gives way with little warning. Once the ground subsides, soil becomes compacted, losing the porosity that enabled it to hold water. Recharging a depleted aquifer may therefore become more difficult. Sinkholes occur when?

Answers

Answer:

Sinkholes occur when water from the groundwater has been removed in excess.

Explanation:

Sinkholes are empty spaces in the ground that occur due to the landslide of large volumes of land, creating craters of different sizes. This landslide takes with it everything that is on top of it, such as houses, animals, streets and even entire buildings. While these holes can occur due to engineering flaws, the most common reason is the excessive use of groundwater, which creates an empty space in the interior of the soil and causes the earth to sag.

please help me fill the squares

Answers

Answer:

that is basically it. I'm just adding works so I can send this

El pelaje negro de los borregos se debe a un alelo recesivo n frente a su alelo N que determina el pelaje blanco. Si cruzamos un individuo homocigótico blanco con un homocigótico negro, ¿de qué color serán los descendientes de la primera generación filial? GENOTIPO-FENOTIPO

Answers

Answer: Los descendientes de la primera generación filial tendrán un genotipo Aa y un fenotipo color blanco.

Explanation:

Un gen es un segmento de ADN que codifica para una proteína. Para cada gen, hay distintas versiones, conocidos como alelos. Por ejemplo, el gen que codifica para el pelaje tiene los alelos para el color blanco y para el color negro. Considerando que los organismos diploides tienen dos copias de cada gen (dos alelos), un alelo dominante solo necesita una copia para expresarse. Mientras que un alelo recesivo, necesita dos copias.

En este ejemplo, el borrego homocigota blanco tiene un genotipo (conjunto de genes) de AA ya que el color blanco es dominante y al ser homocigota indica que ambos alelos son iguales. El borrego homocigota negro tiene un genotipo de aa ya que se necesitan dos alelos recesivos para mostrar ese fenotipo (características visibles).

Los borregos producen gametos, los cuales son células sexuales (espermatozoide u óvulo) haploides, es decir que solo poseen un alelo de cada gen. Entonces el borrego AA solo produce gametos con genotipo A, mientras que el borrego aa solo produce gametos con genotipo a. Estos gametos son los que se cruzan, es decir que la descendencia solo puede tener un genotipo Aa (con un alelo de cada padre)

El genotipo Aa posee un alelo dominante A (que codifica para el color blanco) que enmascara los efectos de el alelo recesivo a (que codificaría para el color negro) Entonces, los descendientes de la primera generación filial tendrán un genotipo Aa y un fenotipo color blanco.

importance of ammonification​

Answers

Answer:

Ammonification is crucial for providing living organisms with the essential nitrogen that they need.

help me pls i will mark you as brainliest

Answers

Answer: first qusetion the last one       and the second the third

Explanation:

Answer:

I guess the answer for the first picture is no.A that is consume a wide variety of food.

Which of the following structures are NOT involved in asexual reproduction?
A. Gametes B. Roots C. Stem D. Tuber

Answers

Answer:

Which of the following structures are not involved in asexual reproduction? Gametes.

Explanation:

So option A. Have a great summer. This is the correct answer.

Research the discovery of stem cells and write a report describing your findings.

Answers

Dude...you just want someone to do it for you..? Or..?

Hello, I need to know what is at least one reason that their is Global Warming. Whats causing it?

Answers

Answer:

Increased heat, drought and insect outbreaks, all linked to climate change, have increased wildfires.

Explanation:

Hope this helps!

1.Condition in which one allele is dominant over
the other​

Answers

Answer:

The condition in which an allele is dominant over another allele is dominance

Question 3 of 10
What is altitude?
A. A certain distance north or south of the equator
B. The movement of a large mass of air
C. A mass of flowing ocean water
D. The measure of height above sea level
SUBMIT
Need ASAP pleaseeeee

Answers

I think it’s D not entirely sure tho

Answer:

D.

Explanation:

base on my research..the correct answers is letter D

Other Questions
The average time it takes to travel from home to school is 22 minutes. Depending upon weather and morning traffic, the actual time on a given day can vary up to 5 minutes. PLEASE HELPPPPP I NEED TO PASS SUMMER SCHOOL George and Tamara (doesn't, don't) want to see that movie. doesn'tdon't PLS HELP ASAP !!! PLSSS !! will mark whoever answers correctly as brainliest ! How is the graph below misleading?different widths of the bars too large of increments usedy-axis doesn't begin at zerobroken y-axis Si se aplic una fuerza de 150N en un rea de de 0.4m2cual ser la preciosa ejercida? Which expression has the largest value? Each has as a factor. A 92 38\ \ \frac{9}{2}\ \times\ \frac{3}{8} 2 9 8 3 B 1089 38\frac{10}{89}\ \times\ \frac{3}{8} 89 10 8 3 C 123 381\frac{2}{3}\ \times\ \frac{3}{8}1 3 2 8 3 D 278 382\frac{7}{8}\ \times\ \frac{3}{8}2 8 7 8 3 what is the correct answer Mrs Eze bought five loaves of bread for Ada. HOWEVER, she was not at home to receive them when the kind woman arrived at her house about an hour later is an example of one of the listed options belowa.Introductionb.Conclusionc.Transitional clued.Emphasis Read the sentences.The settlers moved into the unknown. They left the familiar behind.Which sentence correctly combines the two sentences into a sentence with a compound verb?Moving into the unknown, the settlers left the familiar behind.The settlers moved into the unknown and left the familiar behind.The settlers moved into the unknown, leaving the familiar behind.Leaving the familiar behind, the settlers moved into the unknown. In what country does fish rain every year help me on this question Determine the domain of the following graph: A shipment of sugar fills 6 containers. If each container holds 3 3/4 tons of sugar, what is the amount of sugar in the entire shipment?Write your answer as a mixed number in simplest form. Please helpppp i have a test tomorrow the problem is in the picture below Here are some cards with angles written on them.451655901023153Moira picks one of the cards at random.What is the probability that the angle on the card is greater than 100? What do this mean in English (Esta interesado en mi servicio de sexo adomicilio) What is the length of /AB? having hair on the back of the hand is dominant (H) and not having the hair is recessive (h) a mother has Hh and a father has hh if they have a child which genotype will make their child not have hair on there back of the hand? A, B&C form the vertices of a triangle.CAB = 90, ABC = 70 and AC = 9.5.Calculate the length of AB rounded to 3 SF.Please help :)