briefly explain how down syndrome results from meiosis
Answer:
In translocation, a piece of chromosome or a whole chromosome breaks off during meiosis and attaches itself to another chromosome. The presence of an extra part of the number 21 chromosome causes the features of Down syndrome.
HELP ASAP! I WILL GIVE 50 POINTS AND BRAINLIEST
Phenotypic similarity does not always reflect evolutionary relationships due to:
Check all that apply
Are the answers B and C?
A) variation in rates of evolutionary change among species
B) homoplasy
C) convergent evolution
D) outgrouping
The process cells use to harvest the energy in organic compounds, particularly glucose, is called Group of answer choices
Answer:
cellular respiration
Explanation:
hope this helps have a nice day
Heyyyyyy I NEED HELP ASAP IVE BEEN DOING WORK ALOT ALL WEEK IM SO TIRED CAN SOMEONE JUST FINISH THSES THREE PAGES!!!!! ill give yall my 163 points :)
Answer:
Hmmm.....firstly it depends which grade ur in....well in general I am ready
How does the movement of tectonic plates contribute to natural selection? Please explain.
Answer:
The movement of the plates can contribute to the natural selection of organisms.
Explanation:
Processes such as mutations, duplications, exon shuffling, transposable elements and pseudogenes have contributed to genomic evolution.
What physical characteristics of an environment would support populations and communities within a desert ecosystem?
Answer:
General Characteristics of the Desert:
Aridity: It is one and common characteristic of all deserts throughout most or all of the year. ...
Extremes of temperature: ...
Humidity: ...
Precipitation: ...
Drought: ...
High wind velocity.
Sparsity of cloud cover.
Absence of water vapour in air.
Select the part that contains the information that an animal cell uses for growth and activities.
lysosomes chromosomes mitochondria vacuoles
What does listening to sound that is very loud 82dB or higher for extended periods of time do to your ear?
Answer:
It ruins your hearing a bit.
Explanation:
Your hearing gets ruined by the loud beats coming from the sound, making your ear drums bounce and hurt a bit, making your hearing weaker
NY Hebor video. Summary opinion
Answer:
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Explanation:
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PLEASE HELP!!
Which sector creates the most fossil fuel emissions?
agriculture
transportation
electricity generation
industry
Answer:
Transportation
Explanation:
...............
What phase of the moon does this image represent?
Answer:
Waxing Quarter
Explanation:
Before a cell divides, it makes a copy of its genes during
Bedford a cell divides, it makes a copy of its genes during interphase
What occurs when mitosis keeps dividing?
The bacterial DNA can be found in the
The bacterial DNA can be found in the cytoplasm.
Hope this helps
When crossing over take places chromsomes
A.
Decrease in number
B. Produce new genes
C. mutate in the first division D. exchange segment of DNA
Answer: D
Explanation:
Crossing over refers to homologous chrosmomes exchanging DNA which creates variation of chromsoomes that are inheried by offspring.
Carbon can be stored in the ocean as _.
A. "locking" carbon
B. carbonic acid
C. calcium carbonate
Answer:
Carbon can be stored in the ocean as carbon acid
Which three terms relate to sexual reproduction but not to asexual reproduction?
A. Sperm
B. Mitosis
C. Gametes
D. Meiosis
Answer:
I believe its A, C, and D
Explanation:
We added 30 N of force to the right side of the box. What is the net force acting on the box
All the following are abiotic factors except
A.Fungi
B. Bacteria
C. Plants
D.tomato
Answer: tomato is not a adiotic
Explanation:
What are the answers? plzz help
Based on what you have learned using the module resources, write an explanation (as if you were talking to a friend or family member) of how gene expression derives a protein from a genotype. Your response should explain the connection between DNA, RNA, proteins, and traits and describe what happens during transcription and translation. Feel free to include a picture of a concept map or other visualization as an aid to your written explanation!
Answer:
Two DNA cells come together to form a whole new genome.
Which of the following statements about cell organelles is NOT true?
PLEASE HELP!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
A. Chloroplasts contain chlorophyll and are the site of photosynthesis.
B. Many of the same organelles are located in both plant cells and animal cells.
C. The nucleus in an animal cell has a different primary function than in a plant cell.
D. The endoplasmic reticulum has several roles, including packaging and transporting proteins.
Answer: C
Explanation:
because the nucleus in eukaryote cells have the same function which is to store DNA.
a description of the role of sensory organs and the types of
stimuli the organs receive
Tongue
The four intrinsic tongue muscles work together to give the tongue great flexibility.
The nervous system must receive and process information about the world outside in order to react, communicate, and keep the body healthy and safe. Much of this information comes through the sensory organs: the eyes, ears, nose, tongue, and skin. Specialized cells and tissues within these organs receive raw stimuli and translate them into signals the nervous system can use. Nerves relay the signals to the brain, which interprets them as sight (vision), sound (hearing), smell (olfaction), taste (gustation), and touch (tactile perception).
1. The Eyes Translate Light into Image Signals for the Brain to Process
The eyes sit in the orbits of the skull, protected by bone and fat. The white part of the eye is the sclera. It protects interior structures and surrounds a circular portal formed by the cornea, iris, and pupil. The cornea is transparent to allow light to enter the eye, and curved to direct it through the pupil behind it. The pupil is actually an opening in the colored disk of the iris. The iris dilates or constricts, adjusting how much light passes through the pupil and onto the lens. The curved lens then focuses the image onto the retina, the eye’s interior layer. The retina is a delicate membrane of nervous tissue containing photoreceptor cells. These cells, the rods and cones, translate light into nervous signals. The optic nerve carries the signals from the eye to the brain, which interprets them to form visual images.
2. The Ear Uses Bones and Fluid to Transform Sound Waves into Sound Signals
Music, laughter, car honks — all reach the ears as sound waves in the air. The outer ear funnels the waves down the ear canal (the external acoustic meatus) to the tympanic membrane (the “ear drum”). The sound waves beat against the tympanic membrane, creating mechanical vibrations in the membrane. The tympanic membrane transfers these vibrations to three small bones, known as auditory ossicles, found in the air-filled cavity of the middle ear. These bones – the malleus, incus, and stapes – carry the vibrations and knock against the opening to the inner ear. The inner ear consists of fluid-filled canals, including the spiral-shaped cochlea. As the ossicles pound away, specialized hair cells in the cochlea detect pressure waves in the fluid. They activate nervous receptors, sending signals through the cochlear nerve toward the brain, which interprets the signals as sounds.
3. Specialized Receptors in the Skin Send Touch Signals to the Brain
Skin consists of three major tissue layers: the outer epidermis, middle dermis, and inner hypodermis. Specialized receptor cells within these layers detect tactile sensations and relay signals through peripheral nerves toward the brain. The presence and location of the different types of receptors make certain body parts more sensitive. Merkel cells, for example, are found in the lower epidermis of lips, hands, and external genitalia. Meissner corpuscles are found in the upper dermis of hairless skin — fingertips, nipples, the soles of the feet. Both of these receptors detect touch, pressure, and vibration. Other touch receptors include Pacinian corpuscles, which also register pressure and vibration, and the free endings of specialized nerves that feel pain, itch, and tickle.
4. Olfaction: Chemicals in the Air Stimulate Signals the Brain Interprets as Smells
The sense of smell is called olfaction. It starts with specialized nerve receptors located on hairlike cilia in the epithelium at the top of the nasal cavity. When we sniff or inhale through the nose, some chemicals in the air bind to these receptors. That triggers a signal that travels up a nerve fiber, through the epithelium and the skull bone above, to the olfactory bulbs. The olfactory bulbs contain neuron cell bodies that transmit information along the cranial nerves, which are extensions of the olfactory bulbs. They send the signal down the olfactory nerves, toward the olfactory area of the cerebral cortex.
5. Home of the Taste Buds: The Tongue Is the Principal Organ of Gustation
What are all those small bumps on the top of the tongue? They’re called papillae. Many of them, including circumvallate papillae and fungiform papillae, contain taste buds. When we eat, chemicals from food enter the papillae and reach the taste buds. These chemicals (or tastants) stimulate specialized gustatory cells inside the taste buds, activating nervous receptors. The receptors send signals to fibers of the facial, glossopharyngeal, and vagus nerves. Those nerves carry the signals to the medulla oblongata, which relays them to the thalamus and cerebral cortex of the brain.
Answer:
The motion of a mouse
Explanation:
Ik This is for A-P-3-X
Keep on cheating guys whatever it takes to pass :)
What happens to the helpful traits after many different traits?
Answer:
They become more expressed and prominent, because of natural selection.
what two types of cells contain chloroplast
Answer:
Chloroplasts are organelles found in plant cells and eukaryotic algae that conduct photosynthesis
Explanation:
Does anyone have the file for a biology lab. The lab is...
Lab: Blood Typing
Assignment: Lab Report
The name of the class is Biology B-IC
Answer:
are those the answer choice?
Explanation:
is it close to the end of the world
Answer:
i think so because of co
vid-19
Answer:
Yes it is. I know this because it talks about the last day's in the bible.
"But know this, that in the last days critical times hard to deal with will be here. For men will be lovers of themselves, lovers of money, boastful, haughty, blasphemers, disobedient to parents, unthankful, disloyal, having no natural affection, not open to any agreement, slanderers, without self-control, fierce, without love of goodness, betrayers, headstrong, puffed up with pride, lovers of pleasures rather than lovers of God, having an appearance of godliness but proving false to its power; and from these turn away."
-2 Timothy 3:1-5
Explanation:
GIVING 13 POINTS AWAY PLEASE HELP ME WITH QUESTIONS 8-9 ASAP!!!!!!!
Please answer these questions but if u don’t know the answer then don’t say anything pleaseeee help!!!thank u.
In order:
electrons
electrons
protons
4
3
3
The amount electrons and protons balance out their charges, leading the charge to be 0
This answer depends on what you learned in class:
They discovered the presence of neutrons after experimenting.
or
They realized that these neutrons had to exist to make a stable nuclei and balance out the mass.
(both answers are correct, so you can combine them if you want)
Carbon Cycle Changes Lab
Lesson 12 Earth Science B Unit 4 Earth's Processes Climate Change
Needs to be original.
I can't see the picture soo I don't understand what your question 8s