What is a molecular clock?
Select one:
ill give 30 points!

The idea that some sections of DNA can accumulate mutations fast while other parts accumulate mutations more slowly.

The idea that some sections of DNA are resistant to mutations and do not have them.

The idea that DNA evidence can be used to support evolution.

The idea that a section of DNA accumulates mutations at a constant rate over time.

Answers

Answer 1

Answer:

pretty sure its c (the thrid one)

Explanation:


Related Questions


Only a single drop of water is needed to make a smear?
a. True
b. False

Answers

Answer:

true,only a single drop of water can cause a smear

Which set of organisms would belong to the Eukarya domain?

Answers

Answer:

All life can be classified into three domains: Bacteria, Archaea, and Eukarya. Organisms in the domain Eukarya keep their genetic material in a nucleus and include the plants, animals, fungi, and protists.

Answer:

All life can be classified into three domains: Bacteria, Archaea, and Eukarya. Organisms in the domain Eukarya keep their genetic material in a nucleus and include the plants, animals, fungi, and protists.

Explanation:

penge like

TRUe or false A gene in the genome of a newly discovered microorganism can be assigned a function if that gene is paralog of a gene without an experimentally known function ?​

Answers

The answer is gonna be false

which two sentences best explain what happens to the energy snails get fromo the plants they eat?
A.the snalis use about 1%

Answers

Answer:

Explanation:

D and c

Answer:

I think it's B and D.

Explanation:

6. Samples of atmospheric air and exhaled air were analysed by four groups
of students for oxygen and carbon (IV) oxide content. The following are
the results, expressed in volumes per thousand:
(i) Amount of oxygen in atmosphere = 200
(ii) Amount of oxygen in exhaled air = 160
(iii) Amount of carbon (IV) oxide in atmosphere = 300
(iv) Amount of carbon (IV) oxide in exhaled air =41
Explain the difference in volume of each gas between the atmosphere and
the exhaled air.​

Answers

Answer:

Due to difference in volume of both atmosphere.

Explanation:

There is difference in volume of carbondioxide and oxygen gas between the atmosphere and  the exhaled air because of the volume difference of atmosphere and exhaled air. The volume of atmosphere is larger than the body from where the gases are exhaled. The body has lower space for these gases so these gases are less in concentration in the exhaled air which the body releases as compared to the atmosphere where the concentration of these gases are larger.

Why is this flower able to self-pollinate?
O A. It has a pistil and anthers.
OB. It has stamens and anthers.
o C. It has a pistil and an ovary.
O D. It has stamens and an ovary

Answers

Answer:

Explanation:

Self-pollination occurs when the pollen from the anther is deposited on the stigma of the same flower, or another flower on the same plant.

What would happen is rabbits from a warm, southern climate were moved to a cold, northern climate?

Answers

Answer:

They would freeze and it would be hard to find food because they are not accustomed to the different climate. They would also be easy prey because of the environment change they are not equipped for.

Answer:

The answer would be that they would adapt by growing thicker coats.

Explanation:

If hair growth is related to temperature then the rabbits will grow more hair to adapt the cold norther climate.

(plz mark me brainliest)

Distinguish between an acid and alkaline slant?​

Answers

Answer:

Acid slant: yellow, fermentation of glucose and lactose and/or sucrose. High concentration creates excessive acid formation

Alkaline slant: red, limited glucose in the medium and limited acid formation.

The pH of acids is less than 7. Alkalis have a pH more than 7 The pH of neutral substances is 7. If metal oxides are soluble in water, they are alkaline. Non-metal oxides are acidic, if soluble in water.

What are acids?

An acid is a molecule or ion that can either donate a proton (Bronsted-Lowry acid) or form a covalent bond with an electron pair (Lewis acid). The proton donors, also known as Bronsted-Lowry acids, are the first type of acid.

Only dextrose fermentation produces an alkaline/acid (red slant/yellow butt) reaction.

The fermentation of dextrose, lactose, and/or sucrose is indicated by an acid/acid (yellow slant/yellow butt) reaction.

An alkaline/alkaline reaction occurs when as a result, carbohydrate fermentation does not occur.

The presence of red (alkaline) in the slant and butt indicates that the organism being tested is a nonfermenter.

The formation of hydrogen sulfide results in a black precipitate in the butt of the tube. The splitting and cracking of the medium indicates gas production.

Thus, these are the basic difference between acid and alkaline slant.

For more details regarding acids, visit:

https://brainly.com/question/14072179

#SPJ2

what are renewable natural resources?​

Answers

Explanation:

It's a natural resource which will replenish to replace the portion depleted by usage and consumption.

4. Fungi have two modes of reproduction, creating offspring either sexually or asexually. Hov does a fungus carry out asexual reproduction?
a. By producing sperm and egg cells
b. By producing spores
C. By cloning an entire organism
d. By dividing in half to create two separate organisms

Answers

Answer: b. By producing spores

Explanation:

A hypotonic solution has a lower concentration of solutes than a blood cell. Explain what
happens when a blood cell is placed in a hypotonic solution.

Answers

The blood cell swells with water there by bursting.

ead the statement.

For an organism, a section of the DNA code reads CAATCT. Over time, two species form from this population. Species 1 has a mutation in this region; it has CTATCT. Species 2 has another mutation; it has CAATAT.

Scientists discover a new organism, species 3. The new organism has the code CTATCG for the same section.

Which option is most likely true for species 3?
Select one:

Species 3 is not likely to be related to species 1, species 2, or their common ancestor.

Species 3 has most likely evolved from the same common ancestor as species 1 and species 2.

Species 3 has most likely evolved from species 1.

Species 3 has most likely evolved from species 2.

thanks for the help

Answers

Answer:

code reads CAATCT. Over time, two species form from this population. Species 1 has a mutation in this region; it has CTATCT. Species 2 has another mutation; it has CAATAT.

Scientists discover a new organism, species 3. The new organism has the code CTATCG for the same section.

Which option is most likely true for species 3?

Select one:

Species 3 is not likely to be related to species 1, species 2, or their

How does a medicine like Benadryl (a medicine taken to suppress allergy symptoms) affect the immune system?

Answers

It kills of the virus while strengthening the immune system

The frequencies of the color trait among rabbits living in a mountainous area have changed over time. What type of selection most likely occurred?
a. directional
b. disruptive
c. stabilizing
d. sexual

Answers

Question:

The frequencies of the color trait among rabbits living in a mountainous area have changed over time. What type of selection most likely occurred?

a. directional

b. disruptive

c. stabilizing

d. sexual

My answer/thought:

I believe your answer is C. stabilizing. :)

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Hope this helps! if not, correct me. :) if it is, brainliest is appreciated to get to virtuoso

--siveth

How could heart disease affect other organ systems?

Answers

you'll be getting less oxygen to the rest fo the body, this can cause shortness of breath, swelling in your legs, fluid build up and even kidney and liver damage

hope this helps!!

What is the correct order?

Answers

Answer:ookkk

Explanation:soososdasDklkl.SDmASL:>dmASL:kd ;aSdlAS"

d;[]

as

ASd

asdas

;d'

a'ds

a;'

adasd;'

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d;'

asd;'

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HOPE U GET IT CORRECT MUAHAHAHAHAHAHHAHAHA


Hi can you help please help me with this

Answers

Answer: D someone running at a constant speed and direction

Explanation:

HELP ASAP HELP.......

Answers

Answer:

energy must equal out

Explanation:

obvious

D


Energy metabolism and obesity

Energy balance occurs when the energy content of food is matched by the total amount of energy that is expended by the body.

Not really a homework question, just curious because I couldn't find an answer on a search engine.

I found a small, 6 legged, black bug in my backyard. In fact, they are everywhere in my yard, it doesn't annoy me whatsoever. It is a harmless bug, as I have interacted with them before. Can anyone tell me what bug it is?

Answers

Answer:

palo verde beetle

Explanation:

this was the closest match to the beetles I saw I think it is also called a black carpet beetle.

Help, please. Bio assignment and is due tonight. Population density typically decreases with increasing body size. Why do you think this is the case?

Answers

population density typically decreases with increasing body size. Why do you think this is the case? Smaller animals require less food and others resources, so the environment can support more of them per unit area.
Smaller animals require less food and others resources, so the environment can support more of them per unit area

Please hurry 100 points

Answers

Answer:

I am sorry but I don't have any information on this question.

Answer:

What's the question

Explanation:

Following proper safety guidelines _______.
a.
minimizes the chance of accidents occurring in lab
b.
involves using a fire extinguisher
c.
prevents accidents from occurring in lab
d.
requires using a safety shower


Please select the best answer from the choices provided

A
B
C
D

Answers

Answer:

the answer is either a or c. I don't really recommend c so its A

Answer: a

Explanation: accidents could be minimized by following safe guidelines.  But we cant be 100percent preventive, because its an accident.

A population of wolves predates a population of moose on Isle Royale, Michigan, where there are fewer wolves than moose to start. The wolves prey on the moose and eat well, allowing them to have abundant offspring. However, as the wolf population rises, the moose population drops, and over time, the wolf population begins to drop also because of the reduced availability of resources. As the wolf population drops, moose are able to better survive and reproduce, causing the moose population to rise. With this abundance of moose, the wolf population is able to rebound until their population exceeds the moose population’s ability to support the number of wolves. Which population dynamic does this series of oscillations represent?

Answers

Complete question:

A population of wolves predates a population of moose on Isle Royale, Michigan, where there are fewer wolves than moose to start. The wolves prey on the moose and eat well, allowing them to have abundant offspring. However, as the wolf population rises, the moose population drops, and over time, the wolf population begins to drop also because of the reduced availability of resources. As the wolf population drops, moose are able to better survive and reproduce, causing the moose population to rise. With this abundance of moose, the wolf population is able to rebound until their population exceeds the moose population’s ability to support the number of wolves. Which population dynamic does this series of oscillations represent?

Delayed density dependence Delayed density independence Extinction vortex Carrying capacity

Answer:

Delayed density dependence

Explanation:

The Delayed density dependence occurs when two species are in interaction (prey-predator or parasite-host), and the dynamic of each population follows the dynamic of the other population. The natality and mortality rates of one species follow the rates of the other species.

Delayed density dependence dynamics regulate populations and allow the occurrence of equilibrium or balance in nature.

Predator-prey scenarios

Assuming that the prey lives in the ideal environment with no predators, it shows an exponential growth rate. Prey can grow, develop, and reproduce, increasing its population size. The more available items, the more predator there will be. The predator population increase in size, and its presence affects the prey populations, leading it to decrease. So there are fewer available items to prey on.    

The prey population also affects the predator population. After the increase in the predator population size, the number of available prey decreases. The predator lives in an ideal environment but depends on the prey density. The more predators there are, the fewer prey there will be left. The predator population decreases exponentially due to the item's lack. The predation rate depends on density as well as natality and mortality rates.

So, to sum up,

prey population increases in sizepredator population increases in sizeprey population decreases in sizepredator population decreases in size

In this particular example, the wolves population follows the moose population and vice-versa. It is not simultaneous. It happens with a delay.

Moose influences the wolf population because they are their source of food. The more moose, the more wolves there are. The fewer moose, the fewer wolves there are.

This is a density-dependent dynamic because both populations are affected when they reach a high value.

You are studying soil samples from a particular area. You notice a reddish color present in the soil. Explain the weathering process that contributed to the soil's color.

Answers

Answer:

Oxidation is the reaction of rock minerals with oxygen, thus changing the mineral composition of the rock. When minerals are rock oxidize, they become less resistant to weathering.

Explanation:

Which mammal is not a marsupial?

anteater
kangaroo
opossum
wallaby​

Answers

i’m pretty sure it’s a!
An anteater is definitely not

Proteins are made in organelles called _____.

ribosomes


Golgi bodies


DNA

chloroplasts

Answers

Answer:

Ribosome

Ribosome: a cellular organelle that is responsible for making proteins

Please help! Giving brainliest and high points!

Answers

Answer: 1. a. Tail Tail, b. Tall short, c. short short, d. purple flower purple flower, e. purple flower white flower, f. white flower, white flower. g.  tall tall and purple flower purple flower, h. tall short and  white flower white flower, i. short short and purple flower and white flower, j. short short and white flower white flower, k. tall short and purple flower and white flower.  2. a.  tall, purple flower, b. tall, short, purple flower and white flower, c. tall short and white flower, d. tall short and purple flower an white flower,  3. a. 4. Tt, b. 3. TT, c. 5. tt, d.  1. T, e.  2. t.

Explanation:

Generate a random protein sequence that is 5 amino acids long.

Answers

Answer:

Random protein sequence 5 amino acids long

LYSINE - GLUTAMINE - VALINE - GLYCINE - LEUCINE

Explanation:

Proteins are macronutriens formed by amino acids. Amino acids are the monomers of proteins, meaning they are the structural units. These organic compounds are made of amino and carboxyl groups.

For every amino acid there is a DNA sequence:

Lysine: AAA

Glutamine: CAA

Valine: GTG

Glycine: CCC

Leucine: AAT

This protein sequence of 5 amino acids long would be like this in its DNA:

AAA CAA GTG CCC AAT

hiw has human trafficking displayed itself in communities.

Answers

Explanation:

Human trafficking is causing a serious threat.It is the trade of humans,most commonly for the purpose of sexual slavery,forced labour or commercial sexual exploitation for the trafficker or others.The business is started with foreign employment,marriage,travelling to beautiful cities etc and such illiterate and poor people are lured by them.Thus,it has displaced a negative impact and a questioning glance to the people about human kind and humanity.

1. Would the pollution problems caused by cars and trucks be completely solved if they all became electrically powered overnight?

2. Name one challenge we need to overcome by using solar panels

Answers

Answer:

1.This doesn't help COMPLETELY get rid of pollution. It might help lessen the pollution, but it definitely won't solve it, because there are also other things that cause pollution.

2.The main problem with solar power that has stifled its use is the fact that energy production only takes place when the sun is shining. And it won't be beneficial to the countries that aren't really close to the equator ( the middle east) and that might be a problem cause there just might not be enough energy/electricity.

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