Why are some genetic traits very common in certain parts of the world (ex:
brown eyes in California, blue
eyes
in Britain, etc.)?

Answers

Answer 1

Answer:

you are going to have less diversity in specific areas. they will typically have kids with someone they met where they live, and a person will live where they were born. same how mexican people have the same skin color in Mexico.


Related Questions

how do hot objects preduce heat

Answers

When the electromagnetic waves strike an object they are partially absorbed and the energy that the waves carried is converted to heat

Which of the following characteristics of a population will make it better able to adapt to environmental changes?
A.Rapid production of many offspring.
B.Specialization in one type of food source.
C.Large amount of inherited genetic variation.
D.Isolation to a limited geographic range.

Answers

Answer:

C

Explanation:

Answer: C. Large amount of inherited genetic variation.

If you had a population where the genetic variation wasn't as high or practically non-existent, then that population is likely suited to that very narrow specific environment. If the environment doesn't change, then the population wouldn't have a problem. However, the environment isn't likely to stay static. Things change all the time and this change will bring challenges to the population that was suited for the old environmental conditions.

Populations with high genetic variability will have some individuals thrive while some unfortunate members will perish. The members that die off are likely the ones who cannot adapt to the changes. As the environment changes, the individuals who survive will pass on their DNA to their offspring, allowing for natural selection to reinforce those favorable traits. Since the environment is constantly changing, whether that change is slow or fast, this means the process is continued indefinitely. So that's why high genetic variability is favored.

I was wondering if my answer was right ?

Answers

Explanation:

yes the 4th one is right so yes the one you have is right

Secondary consumers are organisms that eat primary consumers for energy. Primary consumers are always herbivores, or organisms that only eat autotrophic plants. However, secondary consumers can either be carnivores or omnivores.

with that said, yes! your answer is correct. there are other secondary consumers in the other options, but the answer you selected it the only one with everything species listed is a secondary consumer

4 ( 3x+10y=54 and x=y+5 )

Answers

Answer:

x−y=9 , x+y=6

4x+4y=1

, 6x−y=1

x2−y=2

, 2x−y=−1

Explanation:

Why are the best index fossils from species that only existed for a short period of time ?

Answers

Answer:

Because once they were very common they disappeared after the mass extinction event. ... Many geologic periods were defined by events that made natural boundary to the period.

Answer: Because once they were very common they disappeared after the mass extinction event.

Explanation: Hope this helppssss!!! :)

Plz helppp is that answer RIGHT

Answers

Yes, Both Parents were heterozygous for black fur.

The conditions for an enzyme to work need to be?

Answers

They need to be capable of making proteins in that area

The answers to these questions ?

Answers

Answer:

1. Lactose, H2O, and lactase.

2. Galactose and glucose.

3. You converted lactose, H2O, and lactase into galactose and glucose.

Explanation:

I don't know about the last one so I would do that one yourself because we can't see what the reaction was from.

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Please give a food web for a blue viper

Answers

Answer:

i think mice

Explanation:

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3. If tall eyeballs (T) are dominant to short eyeballs(t),
give the genotypes that are possible for members of Mr.
Krabbs' family.
Tall eyeballs =
1

Answers

Answer:

Tt, TT

Explanation:

Dominant genes are genes that express themselves over recessive genes. This are expressed on such individual and are visible phenotypically. While recessive genes are genes whose effect are masked and not expressed. They may be present in the genome of an individual but are not usually expressed.

For an individual with a dominant tall eye ball(T)over short eye ball(t), Tall eye ball will always be expressed as TT having similar allele or Tt with a different allele but in a dominant form.

Does this satisfy the octet rule why or why not

Answers

Answer:

No, it does not, because the octet rule says that an atom needs to have eight electrons in its valence shell to be stable. The exceptions are hydrogen and helium, which need only two electrons

Answer: No it doesn’t

Explanation:

PLEASE HELP I NEED TO GET THIS QUESTION RIGHT!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
A flask filled with water and organic molecules was left open to the air for an hour and then was tightly stoppered. After being allowed to sit for a week, the flask was reopened and checked for living organisms. Only anaerobic bacteria were found living in it. Which of the following can be assumed about the conditions within the flask during the week it sat tightly stoppered? (4 points)


Group of answer choices


There were carbon-based gases in the water.


There was abundant oxygen in the flask.


There was no oxygen in the flask.


Sunlight must have entered the water.

Answers

Answer:

There was no oxygen in the flask.

Explanation:

Anaerobic organism do not need oxygen!!

Which best describes the relationship between digestion and cellular respiration? O A. Digestion breaks foods down to simple sugar molecules, and respiration uses the sugar molecules to produce energy. O B. Digestion creates nutrients from food particles, and respiration uses the nutrients to produce energy. O C. Digestion releases oxygen molecules from food, and respiration uses oxygen molecules to produce energy. D. Digestion produces waste materials, and respiration uses the waste materials to produce energy.​

Answers

Answer:

Cellular respiration is a set of metabolic reactions and processes that take place in the cells of organisms to convert biochemical energy from nutrients into adenosine triphosphate (ATP), and then release waste products

when would anaerobic respiration be used instead of anaerobic respiration?​

Answers

Answer:

produce 2 anaerobic respiration


16.Which type of sediments would be most common where a river meets an ocean?
A. biogenous
B. cosmogenous
C. hydrogenous
D. lithogenous

Answers

C sounds most likely because HYDROgenous and Hydro means water
Answer has to be C . HYDROgenous

Which verb correctly completes this sentence

The cabins are empty ___ to be renovated.
A. has
B. is
C. have
D. can
E. was

Answers

Answer:

has ?

Explanation:

Answer: The answer is A (has)

Explanation:

 now that you know the bacteria in each tank drag the tanks to put them in the correct order

Answers

Answer:

1st ammonia nitrifying

2nd nitrite nitrifying

3rd denitrifying

Explanation:

Centrioles are cell structures involved primarily in

Answers

Answer:

In the cell, centrioles aid in cell division by facilitating the separation of chromosomes. For this reason, they are located near the nucleus. Apart from cell division, centrioles are also involved in the formation of cilia and flagella and thus contribute to cell movement.

Explanation:

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In the cell, centrioles aid in cell division by facilitating the separation of chromosomes. For this reason, they are located near the nucleus. Apart from cell division, centrioles are also involved in the formation of cilia and flagella and thus contribute to cell movement.

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Paragraph 5 looks at the types of fuels organisms need.Which of the Following statements is true?

1)Humans need a lot of fat molecules to avoid hunger

2)humans need proteins, fatty acids, vitamins & minerals

3)Humans need a constant supply of red meat

4)Humans need to take Vitamin B supplements

Please help & thank You

Answers

Answer:

2

Explanation:

Humans need proteins, fatty acids, vitamins, and minerals


Describe the movement of water if cells are in a hypertonic solution, hypotonic solution, and isotonic solution.
Why?

Answers

Water molecules move inside the cell in a hypotonic solution causing it to swell


Water molecules move outside the cell in a hypertonic solution causing it to shrink


Water molecules in an isotonic solution does not move inside or outside the cell and the cell’s volume will remain stable

Urea diffused in all regions of the filter during countercurrent flow. Using what you know about the sizes of urea and potassium, which graph shows what would happen to potassium during countercurrent flow?

Answers

Answer:Diffuse in all regions of the filter

Explanation:The potassium level in dialysis is often lower than usual because of incomplete equilibration

PLEASEEEEE HELP!! TY
1. What is the overall purpose of mitosis and meiosis?
2. Why is it important that DNA is replicated prior to cell division?
3. How are normal cells and cancer cells different from each other?
4. Describe mistakes that can occur during the cell cycle and cause human disorders.

Answers

Mitosis aims to create daughter cells that are completely genetically similar to their mothers, with no extra or less chromosomes. In contrast, meiosis serves a single function in the human body that is the creation of gametes.

What is cell division?

The process by which a parent cell divides into two daughter cells is known as cell division. Cell growth and chromosome replication precede cell division, which often happens as part of a longer cell cycle.

Before dividing, cells must copy their DNA. This promotes successful inheritance of genetic features by giving each daughter cell a copy of the genome.

Grow in the absence of signals instructing them to do so in cancer cells. Only when they get such signals do normal cells expand. Disregard cues that would typically instruct cells to cease dividing or die.

Aneuploidy is a condition when there are either too many or too few chromosomes in the daughter cells produced during mitosis.

Thus, this is the overall purpose of mitosis and meiosis.

For more details regarding cell division, visit:

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1. The overarching goal of mitosis is to ensure cell division and the transfer of genetic material to daughter cells for tissue repair, growth and development.

2. To maintain genetic integrity, DNA replication is necessary prior to cell division.

3. Cancer cells have uncontrolled growth, escape cell death and lack contact inhibition, whereas normal cells have controlled cell division, experience programmed cell death and show contact inhibition.

4. The disorders in humans can result from errors in the cell cycle. Diseases such as Down syndrome are caused by abnormal chromosomes. Gene changes can affect the development of cancer.

Meiosis produces gametes for sexual reproduction, while mitosis assures cell division for growth, development, and tissue repair. Accurate transmission of genetic information and preservation of genetic integrity in daughter cells depend on DNA replication prior to cell division.

Whereas cancer cells have uncontrolled proliferation, escape from cell death, and lack contact inhibition, normal cells have regulated division, programmed cell death, and appear to have contact inhibition. Human disorders such as chromosomal abnormalities (such as Down syndrome), gene mutations that cause cancer, errors in DNA replication or repair that cause genetic disorders, and cell cycle control that leads to uncontrolled cell division and tumor formation, all of which Mistakes made during this can have consequences. cell cycle.

Learn more about Meiosis, here:

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Multicellular organisms contain organ systems. Which of the following BEST describes the organs in an organ system?
о A. The organs in an organ system are made up of similar cells.
O
B. The organs in an organ system are made up of similar tissues.
C. The organs in an organ system work together to perform a specific function.
O
D. The organs in an organ system work together to perform all the functions a multicellular organism needs to maintain homeostasis.

Answers

Answer:

C. The organs in an organ system work together to perform a specific function.

Explanation:

The definition of an organ system is a "group of organs that work together as a biological system to perform one or more functions". Each organ in a system does a different job in order to achieve the same goal. For example, the stomach breaks down food, and the intestines gather nutrients but the goal of both is to digest food.

how do you know that individual 1 is heterozygous for the trait

Answers

Heterozygous is having 2 different alleles of a certain gene, meaning one is not dominant. Instead one is a recessive such as Aa

PLEASE HELP I WILL GIVE BRAINALIST AND EXTRA POINTS

Answers

Answer:

Coal-fired power plants

Explanation:

Generally speaking coal-fired power plants emit more greenhouse gas, however both emit greenhouse gases in large quantities.

What would happen to a cell if placed in each of the following solutions:

a. Isotonic solution:


b. Hypotonic solution:



c. Hypertonic solution:

Answers

Answer:

Isotonic: there would be no net flow of water, the cell will stay stable

Hypotonic: the cell will fill up with water and burst

Hypertonic: The cell will shrink because it loses water

Explanation:

Help Please. Is 15 points fair for 5 questions?

Answers

6. Neither are completely right Shawn and Greg are both partly right
7. Potential energy is being transformed into kinetic energy
8. Kinetic energy is created throughout the ride
9. Point s only
10. It kept rolling until it reached the bottom of the ramp

Which of these is a characteristic of a sustainable city?
A. Efficient mass transit between suburbs and the city center
B. Few green areas located near the city center
c. Strict zoning that prevents residential areas from being located near
business areas
Х
D. Well-maintained roads that prevent the need for too much walking

Answers

Answer:

B

Explanation:

Answer:

A

Explanation:

answer is a I had to learn the hard way

Which does not require a moist environment for reproduction?
fern
moss
conifer

Answers

Answer: Conifers

Explanation: they do not rely on water to unite sperm and egg.

please help its due in a hour!!!!!

Answers

Answer:

1. The difference between the normal hemoglobin protein DNA sequence and the sickle cell hemoglobin DNA sequence is a base to base shift, in this case adenine (GAG) to thymine (GTG).

2. The difference affects the amino acid sequence of the protein by replacing glutamic acid (Glu) with valine (Val).

Explanation:

In sickle cell anemia, a change in the DNA nucleotide sequence is observed, where adenine is substituted by thymine, whose expression is the change in the amino acid sequence of globine β, incorporating valine instead of glutamic acid. This represents a molecular mutation - point mutation - by subtitution, which corresponds to missense mutation.

Normal hemoglobin protein in a RBC

DNA                 CTG ACT CCT GAG GAG AAG TCT

Amino acids     Leu  Thr   Pro   Glu   Glu   Lys   Ser

Sickle cell hemoglobin protein in a RBC

DNA                 CTG ACT CCT GTG GAG AAG TCT

Amino acids     Leu  Thr   Pro   Val   Glu   Lys   Ser

When GAG is transcribed to mRNA, the CUC codon is obtained, which codes for glutamic acid. Thymine substitution causes the DNA sequence to change to GTG, which is transcribed as CAC, the codon that encodes the amino acid valine. The change from glutamic acid to valine in β-globin causes an altered hemoglobin, giving the abnormal erythrocytes observed in sickle cell disease.

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