Genetic mutations introduce new gene forms in a population. For instance, the mutation that affects
hemoglobin alters the shape of the red blood cell and makes it sickle-shaped. Which statement
below would explain why the sickle-cell mutation has spread through the gene pool?
A. There is a selective advantage to having Sickle Cell Anemia.
B. This kind of mutation demonstrates a common ancestor.
C. The sickle cell mutation has no benefit.
D. Sickle cell anemia increases the risk of death.
Answer:
B- this kind of mutation demonstrates a common ancestor.
Explanation:
in order to have sickle cell anemia you need to have both recessive alleles from both parents, this recessive allele has to be continuous passed down from generation to generation on both sides, which shows a common ancestor from long ago
In what ways do scientists measure biodiversity? Choose all correct answers
What is the size of Human heart?
Answer:
A human heart is roughly the size of a large fist.
Explanation:
but the size varies according to an individual's age, health and size. The heart weighs 7 to 15 ounces.
If a flower shows incomplete dominance, and the parent plants are red and white, what color will the heterozygotes be?
Answer:
Pink. Incomplete dominance is a blending of phenotypes.
Let it Glow
The light glows bright in the house tonight
Not a darkness to be seen
A kingdom of light bright
And it looks like I'm the brightest
The electricity is zapping like this light storm outside
Couldn't keep it in, The sun knows I've tried
Don't let them Down, don't let them Glow
Be the good Light you always have to be
Conceal, don't glow, don't let them flow
Well, now they know
Let it glow, let it glow
Can't light up this place anymore
Let it glow, let it glow
Turn off and slam the switch
I don't care what they're going to see
Let the electricity rage on
It's funny how some light bulbs makes everything seem small
And the light that once controlled me can't light me up at all
It's time to see how I can shine
To test the limits and glow up
No light, no power, no darkness for me
I'm brightttt!!!!
Let it glow, let it glow
I am one with the light in the sky
Let it glow, let it glow
You'll never see me flow
Here I glow and here I shine
Let the electricity rage on
My light flows through the air into this house
My brightness is spiraling in light fractals all around
And one thought glows like a bright blast
I'm never going dark, the dark is in the past
Let it glow, let it glow,
When I glow like the break of light
Let it glow, let it glow
That perfect lamp is gone
Here I stand in the light of day
Let the electricity rage on
The dark never bothered me anyway
Answer:
This is the most amazing thing i have ever seen, keep writing songs.
Explanation:
WOW!
If you know the answer then answer it please?!?!
Answer:
When the object absorbs all colour frequencies
Explanation:
Certain materials absorb and reflect specific wavelengths of visible light, which results in objects taking on a certain color to the human eye. When nearly all light is reflected, you see white. When no light is reflected, you see black.
Answer: C
Explanation: Hope this help :D
sifat sifat fizik air
Answer:
Explanation:
cair
padat
gas
Why is the question what is an plane so difficult to answer
Answer:
Look below - A plane is math related.
Explanation:
a flat surface on which a straight line joining any two points on it would wholly lie.
"the horizontal plane"
synonyms:
flat surface · level surface · the flat · horizontal
Hope this Helps!
Answer:
I Don't Know what your asking but if your trying to figure out what a plane is this might help
1. a flat surface on which a straight line joining any two points on it would wholly lie.
2. a level of existence, thought, or development.
3. completely level or flat.
4. (of a bird or an airborne object) soar without moving the wings; glide.
Also I don't know why this would be biology related.
please help me with my biology!!!
Answer:
1. logistic population growth
2. K = 72
3. I think weeks 2 and weeks 4 through 10
4. 2.78%
5. 12
Can humans ever directly see a photon?
Answer:
Yes humans can directly see a photon.
Explanation:
In fact, photons are the only things that humans can directly see. A photon is a bit of light. Human eyes are specifically designed to detect light.
This happens when a photon enters the eye and is absorbed by one of the rod or cone cells that cover the retina on the inner back surface of the eye.
For Example
When you look at a chair, you are not actually seeing a chair. You are seeing a bunch of photons that have reflected off of the chair.Thus, Yes humans can directly see a photon.
-TheUnknownScientist
PLEASE HELP ASAP I'M BEING TIMED!!!!!!!!!!!!!!!!!!!!!!!!! HELP ME RIGHT NOW, PLEASE!!!!!!!!!!!!!!
What is the function of the type of muscle that is pictured below?
A) support and movement of the skeleton
B) movement of food through the digestive system
C) contraction and relaxation of the heart
D) generation and conduction of electrical signals
Answer:
it's a okkkkkk
a
its aaaa
Answer:
I believe it is C.contraction and relaxation of the heart
Explanation:
Seven students in a class have masses of 55, 60, 60, 65, 70, 85, 95 kg, respectively. What is the average mass in kg?
Why are pollen grains useful when studying the climate history of a region?
Answer: D on edge
Explanation:
They provide clues about the types of plants that grew in a region at a particular time.
Which type of allele combination is the fish fin length
Codominant alleles
Dominant and recessive alleles or a combination of both Codominant and Dominant and recessive please help I will give brainliest
Answer:
Dominant and recessive genes
Explanation:
There is mutation of dominant genes
Explain how genetic mutations may result in genetic and physical variations (differences) within a population
The flow of individuals in and out of a population introduces new alleles and increases genetic variation within that population. Mutations are changes to an organism's DNA that create diversity within a population by introducing new alleles.
Which statement BEST describes the moon’s position in 14 days and why?
Answer:
I am pretty sure it is B
Explanation:
I think it is position B, a 3rd Quarter moon, because the moon revolves around Earth about once every 7 days.
Answer:is b
Explanation: i got a 100% on this test
Explain what is likely to happen to a water molecules entering area A in the process of photosynthesis
Answer: The granum is a part of the chloroplast. The chloroplast contains the chlorophyll pigment and it is necessary for the trapping of the energy present in the sunlight. As a result of this the photolysis of water takes place and hence water is broken down from water molecule to proton and oxygen.
Explanation:
HELP DUE IN 10 MINS!
What type of mutation is shown?
inversion
translocation
deletion
duplication
This is an inversion.
The section of chromosome has been reversed end to end.
Answer:
I think its B. translocation
Why does water have a high surface tension? (2 points) Group of answer choices The lengths of the bonds in water molecules can change. Water molecules contain 18 electrons. Hydrogen bonding keeps water molecules close together. Water is a liquid at room temperature.
Answer:
Water's high surface tension is due to the hydrogen bonding in water molecules. Water also has an exceptionally high heat of vaporization. ... Water's heat of vaporization is 41 kJ/mol. Vapor pressure is inversely related to intermolecular forces, so those with stronger intermolecular forces have a lower vapor pressure.Look at the graph...What is the optimal temperature for this enzyme?
A. 60 degrees C
B. 45 degrees C
C. 15 degrees C
D. 35 degrees C
Answer:
B: 45 degrees C
Explanation:
However, above 40-45 degrees Celsius, enzymes are usually denatured and can no longer catalyse the reaction, because the hydrogen bonds are broken, so the enzyme permanently loses its shape. The temperature at which the reaction rate is fastest is the optimum temperature.
As per the graph, the optimum temperature for the enzyme is 45 degree Celsius. The correct option is C.
What is optimum temperature?The temperature at which the enzyme exhibits the greatest activity is referred to as the optimum temperature.
Enzyme activity decreases as the temperature rises or falls. It can even become inactive at times. It is equivalent to the body temperature of a warm-blooded animal.
The kinetic energy in the substrate and enzyme molecules is optimal for the maximum number of collisions at the optimal temperature.
At high temperatures, the enzyme's shape changes, and it no longer complements its specific substrate.
It is the temperature at which the enzyme's reaction rate is fastest. It will be the point on the graph where the line reaches a peak at 45 degrees Celsius.
Thus, the correct option is C.
For more details regarding optimum temperature, visit:
https://brainly.com/question/13122916
#SPJ2
Q.3. Describe the structure of the internal and middle ear.
Answer:
The inner ear has two openings into the middle ear, both covered by membranes
Explanation:
The oval window lies between the middle ear and the vestibule, whilst the round window separates the middle ear from the scala tympani (part of the cochlear duct)
❈ The internal ear —
➥ The inner ear (also called the labyrinth) contains 2 main structures — the cochlea, which is involved in hearing, and the vestibular system (consisting of the 3 semicircular canals, saccule and utricle), which is responsible for maintaining balance.
➥ The cochlea is filled with fluid and contains the organ of Corti — a structure that contains thousands of specialised sensory hair cells with projections called cilia. The vibrations transmitted from the middle ear cause tiny waves to form in the inner ear fluid, which make the cilia vibrate.
➥ The hair cells then convert these vibrations into nerve impulses, or signals, which are sent via the auditory nerve to the brain, where they are interpreted as sound. The round window (fenestra cochlea) is a membrane that connects the cochlea with the middle ear. It helps dampen the vibrations in the cochlea.
➥ The semicircular canals also contain fluid and hair cells, but these hair cells are responsible for detecting movement rather than sound. When you move your head, the fluid within the semicircular canals (which sit at right angles to each other) also moves. This fluid motion is detected by the hair cells, which then send nerve impulses about the position of your head and body to the brain to allow you to maintain your balance.
➥ The utricle and saccule work in a similar way to the semicircular canals, allowing you to sense your body’s position relative to gravity and make postural adjustments as required.
❈ The middle ear —
➥ The middle ear is an air-filled space that contains 3 tiny bones (known as ossicles), called the malleus (hammer), incus and stapes (stirrup). Sound waves that reach the tympanic membrane cause it to vibrate.
➥ This vibration is then transmitted to the ossicles, which amplify the sound and pass on the vibration to the oval window (a thin membrane between the middle and inner ear). The Eustachian tube is a narrow tube that connects your middle ear to the back of your nose and throat (known as the nasopharynx). Its function is to allow air into the middle ear as well as drain mucus from the middle ear into the nasopharynx.
➥ When you swallow, your Eustachian tube opens up to allow air into the middle ear, so that the air pressure on either side of the tympanic membrane is the same. In situations when there is a sudden change in air pressure (e.g. during take-off and landing when travelling on a plane), the pressure in the middle ear is not the same as the outside air pressure.
➥ This can make your eardrum bulge or retract and less able to transmit vibrations, causing temporary hearing problems. By swallowing or ‘popping’ your ears, you can equalise the pressure.
Cuál es la relación entre instinto Y aprendizaje
The allele for a recessive trait is usually represented by a capital letter
True or false
Carbohydrates, fats, and proteins needed for the normal functioning of our cells are obtained from
A. oxygen
B. food
C. carbon dioxide
D. vitamins
b
Explanation:
bec because food are the only thing that can contain carbohydrate fat and protein for human being
What happens to the body when blood sugar level decrease than the normal level?
Answer:
Hello There!!
Explanation:
You can get variety of problems and issues from you're nervous system which includes headaches,weakness,fatigue and dizziness and many more.
hope this helps,have a great day!!
~Pinky~
Which statement best explains how tectonic activity affects long-term climate change?
Volcanic eruptions change Earth’s tilt, which is responsible for the seasons.
The movement of continents changes wind patterns and ocean currents.
The change in Earth’s elliptical orbit around the Sun causes climate change.
The increase of sunspots increases Earth’s temperature.
Answer: The movement of continents changes wind patterns and ocean currents.
hope this helps!
Explanation:
The best statement that describe the effect of tectonic activity on climate change is that the movement of continents changes wind patterns and ocean currents.
What are tectonic activities?Tectonic activities includes volcanoes, mountain building, earthquakes and many more.
Tectonic activities are common in plate boundaries where plates converge, diverge or transform.
As a result of the movement of these continental plate, tectonic activities occurs causing earth climate change
Therefore, the movement of this oceanic or continental plates changes the wind pattern and ocean current.
learn more on tectonic activity here: https://brainly.com/question/12907968
Question 12 When cells get energy from glucose without oxygen it is called fermentation, cytoplasm, photosynthesis, phosporolation
Answer:
fermentation
Explanation:
Glycolysis is an ancient, major ATP-producing pathway that occurs in almost all cells, eukaryotes and prokaryotes alike. This process, which is also known as fermentation, takes place in the cytoplasm and does not require oxygen.
Name and describe 3 ways that water can be extracted, or taken out of an aquifer
Answer:
A huge amount of water exists in the ground below your feet, and people all over the world make great use of it. But it is only found in usable quantities in certain places underground — aquifers. Read on to understand the concepts of aquifers and how water exists in the ground.
Ok, so, yes, I did tell my husband about the baby, but he thinks that it’s not his? He is planning on leaving yikes....?
Take a dna test... he will be more confident about it then
What is the most important biological molecule that provides energy for most cellular
processes?