what is the principle of common descent?

Answers

Answer 1
The theory of common descent states that all living organisms are descendants of a single ancestor. Phylogenetic trees and cladograms are often used to hypothesize the evolution of various organisms and shared common descent.



Hope that helped you:)

Related Questions

When proteins unfold due to changes in temperature or pH,

they _______________ (pick 2 responses)


continue to function


don't work anymore


denature


refold into a new shape

Answers

Answer:

When proteins unfold due to changes in temperature or pH, they don't continue to work anymore and denature.

Explain the difference between exotic species and an invasive exotic species.

Answers

invasive exotic species are species that interfiere with the natural food chain and are usually foreign

Answer:

Explanation:

Exotic species are plants and animals that grow in a nonnative enviroment. Are not harmful to the enviroment.

invasice exotic species is when an exotic species becomes harmful to the enviroment.

How is traffic compared to size?

Answers

Answer:

A traffic counter is a device, often electronic in nature, used to count, classify, and/or measure the speed of vehicular traffic passing along a given roadway. These devices generally use some sort of transmitted energy such as radar waves or infrared beams to detect vehicles passing over the roadway.

Explanation:

What are the 2 cells that use meiosis to replicate?

Answers

Meiosis is a type of cell division that reduces the number of chromosomes in the parent cell by half and produces four gamete cells. This process is required to produce egg and sperm cells for sexual reproduction. Mark me brainliest please?

15. If a person feels pressure on her bladder, then she is experiencing -
o
A.)an external stimulus to stop drinking.
B.)an internal stimulus to drink more water.
C.)an external stimulus to release excess water.
D.)an internal stimulus to release waste.

Answers

D to release external waste.

Which organelle of a cell contains its DNA? a) Mitochondria b) Membrane c) Cytoplasm d) Nucleus​

Answers

Answer:

b po

Explanation:

kasi yan ang turo Ng teacher namin

Hope makatulobg

CAN SOMEONE PLEASE HELP ME WITH THIS SCIENCE QUESTION I WILL MARK YOU BRAINLIEST THANK YOU !!!

Answers

Answer:

Mercury :3

Explanation:

:3

10. What is the structure of chromatin and how does it affect gene regulation?

Answers

Answer:

Chromatin is a substance within a chromosome consisting of DNA and protein. The DNA carries the cell's genetic instructions. The major proteins in chromatin are histones, which help package the DNA in a compact form that fits in the cell nucleus. Chromatin structure plays a key role in regulating gene expression by allowing DNA accessibility to transcriptional machinery and transcription factors.

Hope this helps!

Which organelles work together to maintain the needed amount of water in 1 point
a cell? *

Answers

a celllllllllllllll.

Which of the following would occur without gravity?
A
The amount of carbon dioxide in the air would increase
B
The phases of the moon would change or disappear
C
There would be more rain
D
The Earth would become smaller

Answers

Answer:

B) The phases of the moon would change or disappear

The answer will be C as the phased of the moon

Earth or Moon Shadow?
Two friends were looking at
the Moon. Part of the moon
Was visible to them. They
wondered why they could
only see part of the Moon
This is what they said:
Sally: "I think the part we can't see is the
Moon's own shadow."
Enrique: "I think the Moon has moved into
the Earth's shadow."

Answers

What’s the question?

Occur?
2. What is the purpose of translation? Where does it happen in the cell?

Answers

Answer:

The entire process is called gene expression. In translation, messenger RNA (mRNA) is decoded in a ribosome, outside the nucleus, to produce a specific amino acid chain, or polypeptide. The polypeptide later folds into an active protein and performs its functions in the cell.

Explanation:

Hope it helps!

Study the cross-section below and put the following in order from oldest to youngest using the law of of superposition,
(N
(z

Answers

Oldest
L
V
J
W
Z
N
Youngest
I am not too for sure about W since I haven’t done earth science in a while but I hope I helped

The United States uses about _______. of the worlds energy

Answers

Answer:

Here you go!

17%

Explanation:

Demand. With less than 5% of the world's population, the U.S. consumes almost 17% of the world's energy and accounts for 15% of world GDP.

Have a great day!

How is weather related to the water cycle

Answers

Answer:

I don't know

Explanation:

I don't know

the hotter it is, more water will get evaporated, the more water evaporated, the more precipitation there is.

Which system does a human have, but not a flatworm?

A. a digestive system


B. a reproductive system


C. a respiratory system with lungs


D. a nervous system

Drumb roll please...

Answers

C. I think I’m not sure

Answer:

i think its c but i could be wrong

No Explanation

What other ways can organisms be classified?

Answers

Answer:

These specialized groups are collectively called the classification of living things. The classification of living things includes 7 levels: kingdom, phylum, classes, order, families, genus, and species . The most basic classification of living things is kingdoms.

Explanation:

Hope it helps

how does an organism use the information in dna

Answers

DNA contains the instructions needed for an organism to develop, survive and reproduce. To carry out these functions, DNA sequences must be converted into messages that can be used to produce proteins, which are the complex molecules that do most of the work in our bodies.

Explanation:

DNA's instructions are used to make proteins in a two step process.

1st- Enzynes read the information in a DNA molecule and transcribe it into an intermediary molecule called messenger ribonucleic acid (mRNA).

2nd- Information contained in the mRNA molecule is translated into amino acids, which are the building blocks of proteins.

Describe latitude and why it feels warmer at the equator than the poles.

Answers

Answer:

Because the sun's rays hit the earth's surface at a higher angle at the equator. Also Because the sun is always directly overhead at the equator.

Explanation:

Where can you find electrons in an atom?
PLEASE

Answers

Answer:

Nucleus

Explanation:

Answer:

OUTSIDE the nuclues

Explanation:

Only nuetrons and protons are inside the nucleus, electrons are outside the nucleus.

Hope this helps! If it did, please give me brainliest! It would help a lot! Thanks! :D

1. What is density dependence, and why is it important in multicellular
organisms?

Answers

Answer: It is when the population growth rates are regulated by density of a population. This is important in a multicellular organism for several reasons. It would affect the birth and death rates of the organism.

Explanation:

Density dependence refers to the dependence of population growth on density. Natality and mortality rates depend on the number of individuals. The concept is closely related to competition between individuals for resources.

---------------------------

The concept is related to the logistic growth model.

Populations that express a logistic growth model are mostly composed of multicellular organisms.

Population growth depends on density. Natality and mortality depend on the population size, meaning that there is no independence between population growth and population density.

When a population grows in a limited space, density rises gradually and eventually affects the multiplication rate.

The population per capita growth rate decreases as population size increases.

While growing, the population reaches a maximum point delimited by available resources, such as food or space. This point is known as the carrying capacity, K.

K is a constant that equals population size at the equilibrium point, in which the natality and the mortality rate get equal to each other.

Assuming that population size is N, when

N<K, the population can still grow.  N approximates to K, the population´s growth speed decreases.  N=K the population reaches equilibrium,   N>K, the population must decrease in size because there are not enough resources to maintain that size.  

Usually a sigmoid curve represents the logistic growth model.

So what does it mean?

That the natality and moratality rate depends on the number of individuals in the population.

As the population grow, the number of individuals increases, and competition for resources increases.

When the population reaches the critical point of being equal to carrying capacity, means that the environment can not support more individuals.

There are not enough resources for all of them, and competition increases affecting the reproductive rate and population growth.

So after this point, the population size decreases.

-------------------------------------

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Why are embryonic stem cells useful for medicine?

Answers

Answer:

Embryonic stem cells could be used to make more specialized tissues that have been lost to disease and injury. For tissues that are constantly replaced, like blood and skin, stem cells would probably be replaced directly.

Explanation:

Answer:

they can become more cells than adult stem cells can :)

Explanation:

Transpiration is the process of water movement through a plant and its evaporation from plant parts, such as the leaves, stems and flowers. Water is necessary for plants, but only a small amount of water is taken up by the roots and is used for growth. Why must plants transpire most of water if they only need a small amount of it for development? pls answer the question fast.

Answers

Answer:

Plants absorb water in a large amount because water is the only medium which is present in a plant for the transportation of minerals. So, the plant absorbs a lot of water even if it is lose by transpiration.

Explanation:

Which one of the following requires the highest degree of metamorphism?
a. gneiss
b. shale
c. slate
d. schist

Answers

Answer: a. gneiss

Explanation:

Metamorphism can be defined as the synthesis or formation of minerals or rocks from the pre-existing rocks. This involves various physical and chemical processes. The physical processes include the application of heat and pressure. The chemical processes include the oxidation, reduction and other chemical reactions occurring within the rock. Gneiss is one of the highest grade of metamorphic rock. As it exhibit the coarsest grain size. Quartz, mica, and feldspar are the examples of gneiss.

Which blood type would not be possible for children of a type AB mother and a type A father?
a. Type A
b. Type B
c. Type O
d. Type AB

Answers

Answer:

c. O

because no parent has o in their blood.

Explanation:

Organ systems work together to meet the needs of the human body. How is the skeletal system related to the nervous system?

Answers

Answer:

The Skeleton forms a framework for the body and the joints of the bones hold the muscles together.Hence the muscles can move when there's an impulse from the brain (through nervous system.)

who can do this please ​

Answers

Answer:

B. Coastal San Diego sees way higher temperature changes than El Cajun

Explanation:

Since Coastal San Diego is near the ocean it will experience temperature changes such as being hot during the day and colder during the night since because of the ocean breeze and the inland is not much affected since there are no major factors contributing to temperature change there.

Translocator is to ER as _____ is to lysosome

Answers

Answer:

man complete the questions

Which of the following is NOT true regarding taproots?
A. Allows for the transport of sugars up the plant through the xylem.

B. The main root that grows down vertically allowing plants to penetrate deep into the soil

C. An advantage for plants growing in dry soils

D. Support and anchor plant to the soil

Answers

Answer:

A

Explanation:

What is
Age of fishes

Answers

Devonian is known as the “age of fishes”

But the average age of a fish is 3-5 years depending on the environment
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