How has genetics changed overtime

Answers

Answer 1

Answer:

Mutations involve changes in the arrangement of the bases that make up a gene. Even a change in just one base among the thousands of bases that make up a gene can have a major effect. A gene mutation can affect the cell in many ways. Some mutations stop a protein from being made at all.

Explanation:

Hope this helps!


Related Questions

I NEED HELP ASAP DUE IN 10 MINUTES
The herbivores in the forest don’t consume this low-growing invasive plant because they mistake it for a similarly shaped toxic plant in the forest. The invasive plant needs a lot of room to grow. It sprouts from its seeds much earlier than the native species. What effect can its growth have on the native herbivores’ food supply?

Answers

Answer:

It could grow at such an extrem erate that it could use up all natural resources that the native species needs to survive. thus breeding out all native species and becoming a invasive species. The native species the animals eat now does not exist and the animals that needed that food will decrease drastically in populus.

Explanation:

What is the main body system affected from sickle cell anemia?

Answer choices:

Digestive System

Nervous system

Circulatory System

Respiratory system

Muscular System

Skeletal System

Answers

Answer:

Any and all major organs are affected by sickle cell disease. The liver, heart, kidneys, gallbladder, eyes, bones, and joints can suffer damage from the abnormal function of the sickle cells and their inability to flow through the small blood vessels correctly.

Explanation:

Answer:

The main body system affected by sickle cell anemia is the Circulatory system.

Explanation:

According to John Hopkins Medicine (a reliable source), "Any and all major organs are affected by sickle cell disease. The liver, heart, kidneys, gallbladder, eyes, bones, and joints can suffer damage from the abnormal function of the sickle cells and their inability to flow through the small blood vessels correctly."

9- The results of this type of DNA analysis are often used to help
determine *
A) the number of DNA molecules in an organism
B) if two species are closely related
the number of mRNA molecules in DNA
OD) if two organisms contain carbohydrate molecules

Answers

Answer:

B) if two species are closely related.

Explanation:

DNA analysis is used to determine the relationship between two species in order to check their relations with each other because DNA molecules has all the information about the organisms. If there is more similarities between two organisms so they are more closely related to each other while on the other hand, if there is no similarities between two species so we can say that there is no relationship exists between two organisms or species. All this discussion  describes the usefulness of DNA analysis.

All correct EXCEPT: of the following statements concerning characteristics of predator-prey relationships are A. A rise in the population of prey is often followed by a rise in the population of predators. B. A rise in the population of predators is followed by a decrease in the population of prey. C. Camouflageisanadaptationthatprotectsprey. D. Theproductionoflargenumbersofoffspringwithinveryshortperiodsoftimeensures the survival of some prey populations. E. The population of predators most often eliminates the population of prey.

Answers

Answer:

are A. A rise in the population of prey is often followed by a rise in the population of predators.

*lf a strand has 35% adenine, what percent will be cytosine?

Answers

Answer:

35% - adenine

35% - thymine

Then you have cytosine which is paired with guanine and they will both have a percent of 15.

15% - guanine

15% - cytosine

Explanation:

Which best helps scientists determine the age of fossil

Answers

Explanation:

To establish the age of a rock or a fossil, researchers use some type of clock to determine the date it was formed. Geologists commonly use radiometric dating methods, based on the natural radioactive decay of certain elements such as potassium and carbon, as reliable clocks to date ancient events.

The method that best helps scientists determine the age of fossils is radiometric dating. This method is highly accurate and reliable, providing precise numerical ages for fossils.

Radiometric dating is a technique that uses the decay of radioactive isotopes to calculate the absolute age of rocks, minerals, and fossils. Different isotopes have specific half-lives, which is the time it takes for half of the radioactive parent isotopes to decay into stable daughter isotopes.

By measuring the ratio of parent isotopes to daughter isotopes in a fossil or rock sample, scientists can determine how many half-lives have passed and calculate the age of the specimen.

This method is highly accurate and reliable, providing precise numerical ages for fossils and other geological materials, and helping scientists understand the timeline of Earth's history and the evolution of life on our planet.

Therefore, The method that best helps scientists determine the age of fossils is radiometric dating.

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Life on Earth has been influenced by what three large scale processes.

Answers

Evolution Natural Selection Heredity

If you were to examine a sample of 1000 cells, in which of the phases listed below would you expect to find most of the
cells?
O Interphase
O Metaphase
O Anaphase
O Telophase

Answers

Answer:

Interphase

Explanation:

interphase

Can someone please help me

Answers

Answer:

The question A. is "period"

The question Below known as B. is "Group"

Explanation:

"You must not fear, for the answers are actually quite near."

(like in the paper)

You are a mad scientist. You have figured out a way to replace one part of the respiratory and circulatory systems. You believe by doing this one thing you can create an army of physically unbeatable warriors and conquer the world. (Remember you are MAD!) a - What part would you replace to accomplish this? b - What would you replace it with? c - Explain your thinking on how doing this would help create these powerful warriors.

Answers

Answer:

I'd proceed to order pipes from ebay as to replace said parts.

During the process I'd question why is there an army of beef-cake Mega-Men in my basement.

Since I'm a mad scientist I'd make some type of body armor that enhances durability, Thus allowing my warriors to remain standing tall while taking a few rounds of a some good ol' bullet lead.

I would also use BIO-Tech enhancing their skin durability to take the deepest of cuts. Muscle definition and power so my men could slap an Elephant to next week.

(Or atleast until the government find out about the absolute units in my basement and arrest me)

How is the Greenpeace organization monitoring the situation with ozone?

Answers

Answer:

By reducing the emission of CFC's gases.

Explanation:

The Greenpeace organization monitoring the situation with ozone by reducing the emission of CFC's gases that causes depletion of ozone layers. This organization reduces the use of fossil fuels and promoting renewable energy in order to prevent changes in the climate. The  Greenpeace organization ensures the use of those machines which can't produce CFCs and HFCs because one chlorine which is present in these gases destroys 100000 ozone molecules.

Help will mark brainiest

Answers

Answer:

Amino acids are the building blocks of proteins

There are many possibilities that could happen if the sequence of amino acids were to change. It could potentially create a completely different protein with a different function, or it could create a more efficient protein but this is less likely.

Explanation:

What would be an individual with a genotype of XY would be ?

A. not possible
B. a male
C. a dwarf
D. a female

Answers

The answer is B, a male

what do we call the actual gas or substance that causes air pollution?​

Answers

Answer:

The actual gas that causes air pollution is called a pollutant

Explanation:

Air pollution is the decrease in air quality. Air pollutants are the gases that cause air pollution.

What are pollutants?

Pollutants are harmful substances and particles that affect the quality of the environment and are man-made or natural. Fly ash from volcanic eruptions is a natural pollutant that deters the air quality.

The air pollutants like carbon monoxide, sulfur dioxide, and carbon dioxide released from the burning of fossil, coal, and vehicles alter the air quality and result in a change in weather conditions.

Therefore, the pollutants are the actual gases that cause air pollution.

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What does the latest DRC outbreak have in common with the West
Africa outbreak of 2014-2016​

Answers

Answer:

IF YOU WANT MORE EXPLANAION YOU CAN MESSAE ME OK

Explanation:

On November 21, 2014, the WHOexternal icon reported that 42 days had passed since the last Ebola case tested negative twice and was discharged from a hospital in the Democratic Republic of the Congo (DRC). According to WHO recommendations, an Ebola virus disease outbreak in a country can be declared over once 42 days have passed and no new cases have been detected.

I HOPE THIS WILL HELP YOU


An example of a genetic disorder that is caused by a sex-linked recessive
allele is

Answers

Hemophilia: a genetic condition where blood clotting is slowed by the lack of the clotting factor . Only boys can get this!

In all of these organisms, which microscopic structures carry out major life functions?

Captionless Image
A) Chloroplasts
B) Cells
C) Wings
D) Antennea

Answers

U answer is option B Cells

Answer:

B) Cells

Explanation:

Cells are the basic unit of structure of Life. Without cells we wouldn't exist.

IN SCIENCE :d HELP PLEASE

Answers

Answer:

ok

Explanation:

HELP PLEASE IS MY LAST QUESTIonn!!

Which level(s) of organization would NOT have biodiversity? Choose all that apply.


organism

population

community

ecosystem

Answers

Answer:

organism and population

The human circulatory system is a double circulatory system.
Some animals such as fish have a single circulatory system.
In both systems, blood is transported in arteries and veins

State the main function of arteries

Answers

Arteries carry blood away from the heart

6. The absorbed dose of electrons is 50 mrad. What is the equivalent dose in J/kg?
O 5.0 x 10-4 g/kg
500 J/kg
5.0 x 10-3 J/kg
50 J/kg

Answers

Answer:

5.0 x 10-4 g/kg

Explanation:

This is because

I mrad is equivalent to 1/100,000j/kg

Therefore,

To convert 50 mrad to j/kg

= 50/100,000

= 5 × 10^-4j/kg.

Millirad is a decimal unit or rad which is the unit for measuring absorbed ionization radiation.

Which of the following happens during interphase? A prophase B cell growth C cytokinesis D cell division

Answers

Answer: B Cell growth  brainliest?

Explanation:

The transport of water through a plant depends on roots absorbing water. Roots depend on osmosis to obtain water. In osmosis, water always a. Moves from a high concentration to a lower concentration b. Moves from a lower concentration to a higher concentration c. Moves so that the concentration of water on one side of the cell membrane is higher than on the other side d. Moves until there is no water left on one side of the cell membrane

Answers

A. Moves from high concentration to lower concentration

HELPPPP!!!
G:Green
B:Blue
-what percent of the offspring will have green skin???-

Answers

Answer:

75%

b

r

a

i

n

l

i

e

s

t

plzzzz ;)

Explanation:

Identify an organism in the food web that is tertiary and secondary consumer?​

Answers

Answer:

Snake, lion, hawk

It’s Snake, bird, hawk,

Please help. If you do not know then skip this. NO LINKS

Answers

Answer:

A. electricity

B. it started blowing with force and with power.

C. Electricity, technology, etc.

D.

The definition of the water cycle is
A. rivers draining into the ocean.
B. water moving between reservoirs.
C. transpiration.

Answers

C. Transpiration the answer is transpiration 20 letters long is it 20 yet ? Btw the answer is C, transpiration

Answer:

The answer should be B

Explanation:

When looking at the water cycle you will see that a main part of the cycle is it moving in throughout the earth. reservoirs can be a main part of this process. i hope this helped.

Can you determine the relationship between the risk of contracting Lyme disease and the concentration of ticks that act as vectors for the disease?

Answers

Answer: Since the vector transmitting the disease is the tick, the higher the density of ticks, the higher the rate of transmission of the disease.

Explanation:

Lyme disease is an infection caused by a spirochete-like bacterium of the Borrelia species and is transmitted by a vector, which is a living being (almost always an arthropod) capable of transmitting a disease to vertebrate hosts, including humans.

In this case, the disease is transmitted to humans through the bites of deer ticks that are infected with this bacterium. The ticks live in forests or grassland areas, woodlands and swamps near rivers, lakes or seas. Infections generally occur from late spring to early fall because infected deer ticks live in regions that have extreme temperatures (very low and very high) and high levels of humidity.  

The first and most obvious symptom of Lyme disease is a localized rash that begins as a pink or red circle that expands over time and may appear 3 to 30 days after the bite. Although the disease can also affect the skin, nervous system, joints, muscles and heart.

Therefore, since the vector transmitting the disease is the tick (without ticks there is no transmission), the higher the density of ticks, the higher the rate of transmission of the disease.

Put the following actions in order: DNA replicates, cell grows, cell divides,
cell prepares for mitosis.
DNA replicates, cell grows, cell prepares fro mitosis, cell divides
cell grows, DNA replicates, cell prepares for mitosis, cell divides
cell grows, cell prepares for mitosis, DNA replicates, cell divides
DNA replicates, cell prepares for mitosis, cell grows, cell divides

Answers

Answer:

cell grows, DNA replicates, cell prepares for mitosis, cell divides

Someone please help i’ll give brainliest.

Answers

They provide energy

Explanation:

Yeah they provide energy to the cell
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