Answer:
,
Explanation:
The relative frequency of allele b (which represent the trait that affects oxygen content in the blood of Tibetan women) will increase in the population of Tibetan women over many generations.
Human adaptation on Tibetan plateau Tibet is a mountainous region in Asia.Tibetans have adapted to such environment and they have bigger blood vessels to carry more oxygen content compare to the people leaving in lower elevations.Adaptive advantage in Tibetan womenTibetan women have two alleles.allele a and allele b which represents alternative versions of trait that affect oxygen content in the blood.Allele b confers the adaptive advantage because children born to mothers with the ab or bb genotype are more likely to survive infancy. The allele b will be passed to surviving offspring.Because offspring of ab and bb mothers are more likely to survive than aa and more than 50% will inherit a b allele, the frequency of the b allele among population will increase.To learn about gene and allele :
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1. What is density dependence, and why is it important in multicellular
organisms?
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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How is traffic compared to size?
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:
Why are embryonic stem cells useful for medicine?
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:
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
Answer:
B) The phases of the moon would change or disappear
Which organelle of a cell contains its DNA? a) Mitochondria b) Membrane c) Cytoplasm d) Nucleus
Answer:
b po
Explanation:
kasi yan ang turo Ng teacher namin
Hope makatulobg
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.
Identify the main gas that diffuses from the alveolus to the
capillary
Answer:
In external respiration, oxygen diffuses across the respiratory membrane from the alveolus to the capillary, whereas carbon dioxide diffuses out of the capillary into the alveolus.
The United States uses about _______. of the worlds energy
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!
Which organelles work together to maintain the needed amount of water in 1 point
a cell? *
who can do this please
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.
Explain the difference between exotic species and an invasive exotic species.
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.
15. A scientist puts nucleotide chains of UUUUUUUUU into a test tube and theen allows protein synthesis to take place. Soon, the test tube is full of polypeptide chains made entirely of the amino acid phenylalanine. What does this experiment indicate?
1. that the amino acid phenylalanine is composed of uracil (U)
2. UUU codes for phenylalnine
3. protein synthesis did not occur
4. all proteins are composed of only one type of amino acid
UUU codes for the amino acid phenylalanine
Where can you find electrons in an atom?
PLEASE
Answer:
Nucleus
Explanation:
Answer:
OUTSIDE the nuclues
Explanation:
Only nuetrons and protons are inside the nucleus, electrons are outside the nucleus.
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10. What is the structure of chromatin and how does it affect gene regulation?
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.
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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
Answer:
c. O
because no parent has o in their blood.
Explanation:
The RNA copy goes through a protein “factory” called a (n)
What is it called?
Answer:
transcript
Explanation:
The RNA copy goes through a protein “factory” which is called Ribosomes.
What is the process of copying RNA into protein?The Central Dogma of Molecular Biology states that DNA makes RNA and makes proteins (Figure 1). The process by which DNA is copied to RNA is called transcription, and that by which RNA is used to produce proteins is called translation.
What does transfer RNA deliver to the protein factory?A workhorse in the factory
Among RNA's most important roles is the transcription and delivery of genetic instructions from the nucleus to the cytoplasm where proteins are made.
What is called the protein factory?What looks like a jumble of rubber bands and twisty ties is the ribosome, the cellular protein factory. The ribosome is made up of proteins and strands of RNA, a chemical relative of DNA. It has two interlocked parts that behave as a single molecular machine to assemble all of the cell's protein molecules.
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Which one of the following requires the highest degree of metamorphism?
a. gneiss
b. shale
c. slate
d. schist
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.
How is weather related to the water cycle
Answer:
I don't know
Explanation:
I don't know
Study the cross-section below and put the following in order from oldest to youngest using the law of of superposition,
(N
(z
Describe latitude and why it feels warmer at the equator than the poles.
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:
CAN SOMEONE PLEASE HELP ME WITH THIS SCIENCE QUESTION I WILL MARK YOU BRAINLIEST THANK YOU !!!
Answer:
Mercury :3
Explanation:
:3
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
Answer:
When proteins unfold due to changes in temperature or pH, they don't continue to work anymore and denature.
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.
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:
Organ systems work together to meet the needs of the human body. How is the skeletal system related to the nervous system?
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.)
What are the 2 cells that use meiosis to replicate?
What is SARS OR SEVERE ACUTE RESPIRATORY Syndrome?
Answer:
here is ur answer
Explanation:
it is a severe respiratory disease and it us a virus. it originated in china in 2003 and started to spread a pandemic. it was first recorded in a hotel in China
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
Answer:
A
Explanation:
Translocator is to ER as _____ is to lysosome
Answer:
man complete the questions
how does an organism use the information in dna
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.
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."