Which theory of the spread of human beings is supported most by modern
evidence?
A. Ice Cap theory
B. Multi-regional theory
c. Out of Africa theory

Don’t do it for the points please

Answers

Answer 1

Answer:

multi-regional theory

Explanation:

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Related Questions

describe all of the possible phenotypes of the father's parents. Show the punnet square to support your awnser

Answers

Answer:

We don't know.

Explanation:

We need more to answer this.

tanked

A.)
B.)
C.)
d

Answers

Answer:

A.)

Explanation:

The answer is A. I believe this is correct please inform me if it is correct or incorrect. Stay afriv

The answer is A.........

Which part of the plant converts energy from the sun into food?
Question 1 options:

Roots

Stem

Leaves

Flowers

Answers

The answer is C) Leaves

Answer:

The leaves

Explanation:

its the leaves since they are the ones that take in the energy

Find 2 mistakes in this DNA strand.

Answers

The g doesn’t go with a it’s the second to last one but how’s biology class

Using the graph below, what does 'K' represent?
3
k
population
2
time
Death rate
Exponential growth
Ecosystem decline
Carrying capacity

Answers

Answer:

Explanation:

I can't help u cause there is no graph

Can someone please help me

Answers

Answer:

letter D

Explanation:

LETTER D•Enzymes Are usually Carbohydrates

Is there any difference in the time of sunrise during summer ans winter?​

Answers

Answer:

yes winter time sunrise exactly time but winter time you can't see sun

Hypersecretion of growth hormone after normal growth has ceased may cause

acromegaly

achondroplastic dwarfism

pituitary dwarfism

gigantism

Answers

Answer:

gigantism

Explanation:

The growth hormone is responsible for stimulating normal growth in humans or in other words, stimulating growth at a normal pace. To do this, the growth hormone must be released in optimal quantities, however, an hypersecretion i.e. excessive release of the hormone will cause a fast and uncontrollable growth in certain regions of their body or the whole.

This abnormal excessive growth caused by an excessive release of the growth hormone is called GIGANTISM. Gigantism occurs mostly in children at their growing phase.

describe thermal energy in your own words

Answers

Answer:

Due to the movement of particles within that object or system, thermal energy is energy owned by an object or a system. ... The result of thermal energy is that an object or system has a temperature that can be measured. Thermal energy can be transferred in the form of heat from one object or system to another.

Explanation:

Why would these modifications be important i.e.
what unique feature does Arthrobotrys have?)​

Answers

Answer:

Forming adhesive trapping nets.

Explanation:

These modifications are important to captured its food and to survive in the environment. Unique feature does Arthrobotrys have is the presence of predatory behaviour. Due to this predatory behaviour of Arthrobotrys, they are able to capture the food such as nematodes and feed on them. The Arthrobotrys belongs to the fungi family Orbiliaceae and have 71 species. This fungi formed adhesive trapping nets in order to capture its food.

What sequence would be on the other strand of DNA if one strand of DNA containsthe sequence TACGGATCACTAATC . Do not put spaces between the letters in your answer .​

Answers

If one strand of DNA contains the sequence TACGGATCACTAATC, the other strand will contain the sequence ATGCCTAGTGATTAG.

Hello what happens when you are. Buried wouldn’t it be bad if you were still alive and you wake up in a grave and it is pitched black?

Answers

Answer:

I mean yeah then you would just have to lay there and just slowly starve to death because your buried and the weight of the dirt or sand or whatever you got buried in would be to heavy

No, it’s not good you most likely suffocate and not survive especially in the dark at night someone might not hear you screaming in panic

Which is larger, 40 centimeters or 670 millimeters?​

Answers

Answer:

670 Millimeters

Explanation:

1 Millimeter = 0.1 Centimeter

670 millimetres is equal to 67 cm which is greater than 40 cm. So 670 mm is greater than 40 cm.

What is a millimetre?

It is a unit of measurement for length/distance. It is a very small unit of measurement. It is a visible unit of measurement, unlike a micrometre which is smaller than a millimetre but measures things that are not visible to the unaided eye.

It is a part of the metric system commonly used in Science, Technology Engineering and Mathematics (STEM). A millimetre is measured as one-thousandth of a metre.

The word metre is derived from a Greek word which means measure. The metric system that is used internationally for the measurement of various quantities is based on decimals.

Like a millimetre is one-thousandth of a metre, a micrometre is one-millionth of a metre. A centimetre is one-hundredth of a meter and a quantity smaller than a micrometre called a nanometer is one-billionth of a meter.

Therefore, 670 mm is 67 cm which is greater than 40 cm.

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should there be male and female jobs in science and technology?

Answers

Yes there should yes

who is Safai karamcharis? what will they do​

Answers

Answer:The National Commission for Safai Karamcharis  was formed as a statutory body to look into matters concerning the Safai Karamcharis’ welfare  For the first time,  was constituted as a statutory body under the act in 1993.

1-Brown eyes (B) are dominant to blue eyes (b). Straight hair (H) is dominant to curly hair (h). Free earlobes (E) are dominant to attached earlobes (e). If individual one who has the genotype BbHhEe is crossed with individual two who has the genotype bbhhEe, what is the probability that their offspring has brown eyes, straight hair, and attached earlobes?(I asked last time but I didn't get a serious answer, please make your answers as one percentage.)

Answers

Answer:

The correct answer would be - 1/16 or 6.25% is the probability that their offspring has brown eyes, straight hair, and attached earlobes

Explanation:

In this question, it is given that-

1. Brown eyes (B) are dominant to blue eyes (b)

2. Straight hair (H) is dominant to curly hair (h)

3. Free earlobes (E) are dominant to attached earlobes (e)

Now the cross between BbHhEe (Brown eyes-straight hair-free earlobe) with bbhhEe (blue eyes-curly hair-free earlobe) takes place.

Gametes will be -

BbHhEe - BHE, BhE, Bhe, BHe, bHE, bHe, bhE, bhe

bbhhEe - bhE, bhe

cross would be -

            BHE      BhE       Bhe        BHe        bHE        bHe        bhE       bhe

bhE   BbHhEE  BbhhEE BbhhEe BbHhEe bbHhEE  bbHhEe bbhhEE bbhhEe

bhe   BbHhEe  BbhhEe Bbhhee BbHhee bbHhEe  bbHhEe bbhhEe bbhhee

By the Punnett cross, we get only one out of 16 offspring with brown eyes, straight hair, and attached earlobes

Thus, the correct answer would be - 1/16 or 6.25% is the probability that their offspring has brown eyes, straight hair, and attached earlobes

please help me simple bio genetics

Answers

the answer is D
met-trp—asn—arg-cys-stop

Drag the steps into the correct order to show how plants use energy from the sun. Start with the first step on top.


The sun shines on a plant.


The plant makes sugar and oxygen.


Chlorophyll traps energy from the sun.


Cells use sugar for energy.
PLEASE ANSWER QUICK! WILL GIVE 5 STARS AND A THANKS IF CORRECT. mAYBE BRAINLIEST AS WELL

Answers

Answer:

1. The sun shines on a plant 2.chlorophyll traps energy from the sun 3. the plant makes sugar and oxygen 4.cells use sugar for energy

Explanation:

this might be

Will give brainliest If you increase the rainfall across the region that the Buffalo are in, how do you think that would affect the carrying capacity for Buffalo in the ecosystem?

Answers

Answer:

The Buffalos carrying capacity would most likely go down if the water supply increases.

Explanation:

If water supply increases Buffalos would have easier access to water. example: instead of getting new water every month or so when it rained they can get water anytime due to the increased supply.

The "Buffalos-carrying" capacity would most likely go down" if, the water supply increases," If water supply increases Buffalos would have easier access to water".

Did a change in temperature cause the buffalo population to increase?

Buffalo does shift in regard to the environment because if the climate impacts the carrying-capacity, by involving the resources.

If "the carrying-capacity goes up or down then the people of buffalos would up or down "with it. Although it does not impact the population much.

Thus, Example instead of getting new water every month or so when it rained they can get water anytime due to the increased supply.

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is narcolepsy recessive or dominant

Answers

Answer:

Recessive

Explanation:

Answer: Recessive

Explanation:

In a unique species of plants, flowers may be yellow, blue, red, or mauve. All colors may be true-breeding. If plants with blue flowers are crossed to red-flowered plants, all F1 plants have yellow flowers. When these produced an F2 generation, the following ratio was observed: 9/16 yellow, 3/16 blue, 3/16 red, and 1/16 mauve. Determine the F1 results of a cross between true-breeding red and true-breeding mauve flowered plants.

Answers

Answer:

F1) 100% bbRr, red flowered plants.

Explanation:

Available data:

flowers may be yellow, blue, red, or mauvecolors may be true-breedingthe cross of blue-flowered plants with red-flowered plants, produce plants that have yellow flowersF2 generation: 9/16 yellow, 3/16 blue, 3/16 red, and 1/16 mauve.

Knowing that the phenotypic ratio is 9:3:3:1, we can assume that there are two genes involved in the flower color expression. We can name these genes B and R with a dominant and a recessive allele each (B, b and R, r respectively).

According to the first cross, we might establish the following genotypes:

1st Cross: blue-flowered plant     x     red-flowered plant

Parentals)         BBrr                     x                bbRR

Gametes)     Br, Br, Br, Br                         bR, bR, bR, bR

F1) 100% BbRr, yellow plants

Parentals)   BbRr     x     BbRr

Gametes) BR, Br, bR, br

                BR, Br, bR, br

Punnett square)     BR       Br        bR          br

                  BR     BBRR    BBRr   BbRR     BbRr

                  Br      BBRr     BBrr     BbRr      Bbrr

                  bR     BbRR    BbRr    bbRR      bbRr                    

                  br      BbRr     Bbrr      bbRr      bbrr

F2)  9/16 yellow ---> 1/16 BBRR + 2/16 BBRr + 4/16 BbRr + 2/16 BbRR  

       3/16 blue ------> 1/16 BBrr + 2/16 Bbrr

       3/16 red---------> 1/16 bbRR + 2/16 bbRr

       1/16 mauve ----> 1/16 bbrr    

So,

Yellow-flowered plants: BBRR, BBRr, BbRR, BbRrRed-flowered plants: bbRR, bbRrBlue-flowered plants: BBrr, BbrrMauve-flowered plants: bbrr

According to these genotypes, the second cross would be like following,

2nd Cross: true-breeding red-flowered plants with true-breeding mauve flowered plants.                

Parentals)          bbRR       x        bbrr

Phenotype)       Red                   Mauve

Gametes)   bR, bR, bR, bR      br, br, br, br

Punnett square)    bR       bR        bR        bR                    

                    br    bbRr     bbRr    bbRr     bbRr

                    br    bbRr     bbRr    bbRr     bbRr

                    br    bbRr     bbRr    bbRr     bbRr

                    br    bbRr     bbRr    bbRr     bbRr

F1) 100% bbRr, red flowered plants.

ADD NOTE QUESTION GUIDE
Scientists around the world use a standardized taxonomic
system. Why would scientists want to use a taxonomic system that is standardized?
A
In order to place organisms in different groups
B
In order to avoid confusion with the identification
of organisms
C
So that Latin names can be applied for a practical
purpose
D
Because Linnaeus established the system

Answers

Answer:

In order to avoid confusion with the identification of organisms

Explanation:

Suppose that a cytoplasmic protein (a protein that will function in the cytoplasm inside of the cell) is synthesized by a particular cell type. Describe the route that this protein will take from the moment its synthesis starts in the nucleus until it makes it into the cytoplasm.

Answers

Answer:

A specific gene that contains the information to encode the target protein is transcribed as a primary transcript (pre-mRNA). Subsequently, the pre-mRNA is processed to form a mature mRNA. Finally, this mRNA then moves through a nuclear pore from the nucleus to the cytoplasm where proteins are translated in the ribosomes

Explanation:

The cell nucleus contains the majority of the cell's genetic material localized on linear molecules called chromosomes. During transcription, genes (specific chromosome segments) are used to synthesize primary transcripts (pre-mRNAs) which are then proceeded to produce mature messenger RNAs (mRNAs). RNA processing involves the removal of non-coding intron regions and the joining of coding exon regions (RNA splicing) in order to form a mature mRNA sequence. Subsequently, the mature mRNA leaves the nucleus through the nuclear pores of the nuclear membrane and travels to the ribosomes where is decoded (translated) to produce a specific polypeptide chain (i.e., a protein). Within the ribosome, the mRNA strand binds to multiple transfer ribonucleic acids (tRNAs) via complementary and consecutive three-nucleotide mRNA sequences called triplets or codons, and tRNAs deliver specific amino acids that are consecutively added to the polypeptide chain.

Plzz help!!!
Some scientists are modifying the genetic code of certain fish by inserting genes that cause the fish to produce more growth hormone, which causes the fish to grow more quickly. Salmon is one type of fish on which scientists are working. Which answer choice shows the most significant negative impact to society that could result from producing genetically modified salmon?

Salmon cells could become less responsive to the hormone over time, slowing the growth rate of the fish.

Salmon could be reintroduced into the ecosystem where they could breed with, and alter, populations of wild salmon.

The genetically modified salmon will be very expensive to raise, so the fish will be too expensive for people to buy.

The modified, farmed fish would be more difficult for predators to hunt than wild salmon if reintroduced into the ecosystem.

Answers

Answer:

breeding with and altering the population of wild salmon

the extra growth hormone could change the wild salmons reproductive fitness, could slow them down or make them less fertile or more fragile so they aren't able to spawn etc and reduce the wild population of salmon which would have large effects

there is a rainforest in BC that's survival relies on the nutrients that salmon bring when they spawn and die

It could also be scare mongering and have no negative effect, could be a net positive??

Explanation:

Why are nonnative species a threat to biodiversity?

They often use up resources that other organisms need.
They are not able to successfully breed in the wild.
They release pollution into many environments.
They easily contract and spread diseases to other organisms.

Answers

Answer:

A

Explanation:

They often use up resources that other organisms need.

The reason of nonnative species a threat to biodiversity is because of using resources that other organisms need.

Reason why nonnative species a threat to biodiversity:It leads to various kinds of diseases. It acted like predators or parasites. It acted like a competitor or rivalry. It should be hybridizing with local species.

Hence, The reason of nonnative species a threat to biodiversity is because of using resources that other organisms need.

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Which type of fossil can help us understand an organism’s activity during its lifetime?

Answers

Answer:

trace fossils

Explanation:

Trace fossils are fossils that provide information about the biological activities and behaviors of past organisms.

Answer:

Trace fossils

Explanation:

"Trace fossil is the type of fossil that can help us understand an organism's activity during its lifetime. Trace fossils are fossils that provide information about the biological activities and behaviors of past organisms."

Hope this helps!!

This is not my answer by the way!! I do not own this!!

How are
lactic acid fermentation and
alcoholic fermentation similar?
How are they different?

Answers

Answer:

Both are anaerobic processes that break down glucose to make ATP and recycle NAD+ to glycolysis. Lactic acid fermentation produces lactic acid, alcoholic fermentation produces alcohol and carbon dioxide.

Explanation:

What determines how long the Moon takes to complete one
cycle of phases?

Answers

Answer:

It takes 27 days 7 hours and 43 minutes for the Moon to complete one full orbit around Earth. it's called the sidereal month it's measured by our Moon's position relative to distant fixed stars. but it takes our Moon about 29.5 days to complete one cycle of phases from new Moon to new Moon.

Explanation:

learned about it in 5th grade

Describe one type of factor that controls cell division.

Describe how damage to one of these factors can affect the cell division process.

Thanks!

Answers

The cell cycle is controlled by many cell cycle control factors, namely cyclins, cyclin-dependent kinases (Cdks) and cyclin-dependent kinase inhibitors (CKIs). Cyclins and Cdks, which are positive regulators of the cell cycle, activate cell cycle factors that are essential for the start of the next cell cycle phase.

Factors Affecting Cell Division
Nutrients. The nutrients present in the cell affect cell division. ...
Genetics. Genetic code regulates cell division. ...
Chemicals. Exposure to toxic chemicals such as pesticides and some cleaning chemicals can cause cell mutation. ...
Stress. Stress affects cell division.

Numerous cell cycle regulatory components, including cyclins, cyclin-dependent kinases (Cdks), and cyclin-dependent kinase inhibitors, regulate the cell cycle (CKIs).

What is a factor that controls cell division?

Positive cell cycle regulators cyclins and Cdks activate cell cycle components that are necessary for the beginning of the subsequent cell cycle phase.

The Influences on Cell Division Nutrients. Genetics: The nutrients in the cell have an impact on cell division. Cell division is controlled by genetic code and chemicals. Cell mutation can occur as a result of exposure to hazardous substances like pesticides and some cleaning products. Stress. Cell division is impacted by stress.

Therefore, numerous cell cycle regulatory components, including cyclins, and cyclin-dependent kinases Cdks.

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Please help! Thank you... 3

Answers

Answer:

Adenine (A) = 28%

Cytosine (C) = 22%

Explanation:

The DNA molecule, which is the genetic material that stores or holds information needed by the cell for growth, reproduction etc. Structurally, the DNA is composed of nucleotide subunits, which are of four types namely; Adenine, Guanine, Cytosine, and Thymine etc.

According to Chargaff in his complementary base pairing rule, he states that Adenine will always pair with Thymine (A-T) while Guanine will always pair with Cytosine (G-C). Based on this, Chargaff further stated that the amount of adenine must be equal with that of thymine while that of guanine must be equal to cytosine.

In total, their total amount must be equal to 1 or 100% i.e. (A + T) + (G + C) = 100%. In this question, 22% of Guanine are found in the DNA of a fox. This means that automatically, the percentage of cytosine is 22%. We then calculate the amount of Adenine and Thymine as follows:

(A + T) + (G + C) = 100%

A + T + 22 + 22 = 100

A + T + 44 = 100

A + T = 100 - 44

A + T = 56

Since A = T,

56/2 = 28

Hence, A = 28%, T = 28%

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