Answer: X and Y chromosomes.
Explanation:
Chromosome that differs from other chromosomes (autosomes) in shape, size and behavior are called sex chromosome, allosome, heterochromosome or idiochromosome. These sex chromosomes are typical mammalian allosomes and are sex-determining in species in which sex is determined by the XX-XY system. The presence of the XX allosomes determines female sex, while the XY allosomes are for male sex. These chromosomes contain different genes, where some are only on the X chromosome and others only on the Y chromosome, and a few are on both.
The size of the human X chromosome is 164 million bases and currently has 1,170 genes. It is composed of many repetitive DNA segments that do not code for any protein or their function is not known. Only 1.7% of the chromosome codes for functional proteins that are low in length compared to the average length of a human gene. It has a small number of genes known as housekeeping or constitutive -(responsible for the basic maintenance of the cell) and most of the genes it contains are expressed in few tissues or are tissue-specific, which is especially true for those expressed in brain regions. So, the X chromosome is larger and has more euchromatin regions than the Y chromosome which only has genes that code for male sexual development. Since females have two X chromosomes and males have only one, during development in females one of the X chromosomes is inactivated at random in each tissue to make a dosage compensation. Otherwise, females would be expressing twice as many genes as a male. And through inactivation and dosage compensation, both males and females will express the same number of genes.
list three technologies that humans use to observe objects that are difficult to visit
Answer:
Telescopes, spectroscopes, space probes.
Explanation:
Which of the following is NOT a characteristic of plants?
A. Regulate the water cycle
B. Are used in medicine
C. Provide food, air and habitat
D. Organisms which feed on dead organisms or waste from living organisms
Answer: B B B B B B
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Answer:
A. Regulate the water cycle
Explanation:
Animal cells have centrioles, centrosomes, and lysosomes, whereas plant cells do not. In addition, plant cells have a cell wall, a large central vacuole, chloroplasts, and other specialized plastids, whereas animal cells do not.
Define nutrients List the nutrients present in the food.
Transcribe this strand of DNA into a strand of mRNA
TAC-AAA-CCC-TTT-GGG-ATA-ACT
DNA helicase is an enzyme responsible
for (what) the double
strand of DNA.
Answer:
Helicases are enzymes that are responsible for untwisting the double helix at the replication forks, separating the two strands and making them available to serve as templates for DNA replication
Explanation:
the first forms of life to appear on earth were probably _____
A. complex single- celled organisms
B. complex multicellular organisms
C. simple single-celled organisms
D. simple multicellular organisms
Answer:
C
Explanation:
This is self-explanatory. The very first forms of life wouldn't be complex nor multicellular. They were likely simple, single-celled organisms, as they were smaller and simpler than even bacteria.
bsjqbdjqjqjjq this is soooo hard
Theodore wants to determine if a new diet medication will make rats lose weight. What is the independent variable?
Group of answer choices
The diet medication
The rats
The amount of weight lost
The food the rats eat
Answer:
The amount of weight lost and the diet medication
help me pls thank you
Explanation:
Interdependence. All organisms in an ecosystem depend upon each other. If the population of one organism rises or falls, then this can affect the rest of the ecosystem. If the foxes in the food chain above were killed, the population of rabbits would increase because they are no longer prey to the foxes.
Natural selection results in change over time by acting on traits that are ___
Answer:
passed on, inherited, passed on to offspring, most adapted to the environment or have the best adaptive traits or higher genetic fitness
Explanation:
Natural selection results in change over time by acting on traits that are heritable and advantageous.
What is Natural selection?Natural selection is the differential survival and reproduction of individuals due to the differences in phenotype of the organism. Natural selection is a key mechanism of evolution, the change in the heritable traits characteristic of a population takes place over many generations.
Natural selection is the central mechanisms of evolutionary change in a species and is the process responsible for the evolution of adaptive features in an organism. This selection helps in storing the characteristics which are advantageous and are heritable for the species.
Learn more about Natural selection here:
https://brainly.com/question/2725702
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11. Stop codons are found in
and are responsible for?
Answer:
The presence of a stop codon—UAA, UAG or UGA—in the A site of the ribosome is generally a signal to terminate protein synthesis. This process constitutes the last essential stage of translation, as it ensures the formation of full-sized proteins
When two long-winged flies were mated, the off spring included 77 with long wings and 24 with short wings. Is the short-winged condition dominant or recessive What are the genotypes of the parents
Answer:
the short-winged condition is recessive Both parents are heterozygous, LlExplanation:
Due to technical problems, you will find the complete explanation in the attached files.
ANSWER QUICK WILL GIVE BRIANLIEST
A certain organism has many cells, each containing a nucleus. Inside the cells there is also an organelle that allows the organism to make its own food. This organelle gives the organism a unique color. This organism is best classified as _________.
Arcaea
Plantaea
Bacteria
Animalia
Answer:
Plantaea
Explanation:
You fall backward and hit your head on a very sharp rock. The blow to your head causes you to lose consciousness and stop breathing. You most likely hit what part of your brain?
A) cerebellum
B) frontal lobe
C) brainstem
PLEASE HELP LOL this is from "Pearson Biology Chapter 2 lesson 4"
ill give brainiest for the best onee
Answer:
1. freshwater
2. estuary
3. intertidal
4. marine
5. deep
6. true
7. false (3 percent)
8. false (larger and deeper)
9. false (surface)
10. true
Explanation:
What three factors were favored in the evolution of plants?
Answer: plants are still considered plants, they need water to survive, and they live on earth
Explanation:
Origin of vascular plants required three important evolutionary advances: (1) sporophytes became able to grow independently of their parents after the embryonic stage; (2) sporophytes were able to branch; and (3) sporophytes acquired lignin-walled vascular tissues.Answer:
Explanation:can i have brainless please?
Mention at least three species of HPV(Human papinovirus)
Answer:
Shope papilloma virus, mastomys natalensis papillomavirus, and psittacus erithacus timneh papillomavirus
I need a writing prompt make it opinion and school appropriate. 7-11 gradw
Answer:
I am a South Indian
what about you all ??
Do different patterns of electrical signals have unique
meanings?
Answer:
Plants use electric fields to communicate with bees, scientists have learned.
Bumblebees are able to find and decipher weak electric signals emitted by flowers, according to the study.
Tests revealed that bees can distinguish between different floral fields, as if they were petal colours. The electric signals may also let the insects know if another bee has recently visited a flower.
Explanation:
How bees detect the fields is unknown, but the researchers suspect the electrostatic force might make their hair bristle. A similar hair-raising effect is seen when placing one's head close to an old-style TV screen.
Flowers were already known to use bright colours, patterns and enticing scents to attract pollinators.
How does the skeletal system help aid the body when it is sick?
A.physical protection of internal organs from disease-causing organisms B.filtration of disease-causing organisms from the body C.production of white blood cells that can destroy disease-causing organisms
D.storage of calcium that makes bones stronger and less prone to attack from disease-causing organisms
The correct answer is C.production of white blood cells that can destroy disease-causing organisms as it protects the body against infection.
White blood cells guard your frame in opposition to contamination. As your white blood cells tour thru your bloodstream and tissues, they find the contamination and act as a military widespread to inform different white blood cells in their region to assist shield your frame from an assault of an unknown organism.
How are white blood cells produced in the skeletal system?White blood cells start withinside the bone marrow in a manner referred to as hematopoiesis. All blood cells descend from a not unusual place hematopoietic stem cell (HSC). This is likewise referred to as a "pluripotent" stem cell. These stem cells differentiate—or specialize—in distinctive stages.
Therefore it is clear that the production of white blood cells can destroy disease-causing organisms.
To learn more about the skeletal system refer to the link :
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how did world fromed
Answer:
by allah talah
Explanation:
which of the following forms of reproduction does not require a mate?
A. allogomy
B. asexual
C. meiosis
D. sexual
What part of the body does cancer generally affect?
Answer: Cancer can spread anywhere through the body, but it's most likely to spread to lymph nodes, bones, the brain, the liver or the lungs.
Explanation:
Answer:
See below
Explanation:
Cancer can cause discomfort and loss of function in a specific section of the body by compressing surrounding nerves. Headaches and stroke-like symptoms and indications, such as weakness on one side of the body, are common symptoms and indicators of cancers that damage the brain.
Cancer may spread to any region of the body, although lymph nodes, bones, brain, liver, and lungs are the most commonly affected.
Classify the energy sources as renewable or nonrenewable
Answer:
A renewable energy source is that which is long lasting
Like solor, wind and hydraulic energy
While non renewable energy sources are those which are not long lasting
(Usually taking centuries )
Like fossil fuel
Explanation:
Answer:
Explanation:
Renewable Energy Source Non-Renewable Energy Source
energy obtained from water springs energy obtained from coal
inside the earth
energy obtained from burning plant energy obtained from natural g waste gas
Which statement accurately describes the relationship between weight and mass? Mass is an object's weight multiplied by its diameter Mass is an object's weight multiplied by its diameter Mass is an object's weight multiplied by the amount of gravitational force acting on that object Mass is an object's weight multiplied by the amount of gravitational force acting on that object Weight is an object's mass multiplied by the amount of gravitational force acting on that object Weight is an object's mass multiplied by the amount of gravitational force acting on that object Weight is an object's mass multiplied by its diameter Weight is an object's mass multiplied by its diameter
Answer:
Weight is an object's mass multiplied by the amount of gravitational force acting on that object
What are two examples of carbohydrates?
A. Fats and oils are carbohydrates.
B. Sugars and starches are carbohydrates.
Answer:
B. Sugars and Starches
Explanation:
Fats and oils are examples of fats
Answer:
Sugars and starches!
Explanation:
Sugars are a carb, and starches are a carb. Fats are the opposite, and oils are a type of fat as well.
How is homeostasis important to enzymes? and why?
Answer:
Homeostasis is important to enzymes because the body would not be able to function properly.
Explanation: (This is a direct answer from the Web)
The maintenance of the conditions by homeostasis is very important because in the wrong body conditions certain processes (osmosis) and proteins (enzymes) will not function properly. ... The body's temperature must be kept at 37 degrees because this is the temperature at which enzymes optimally function.
How are GMO's made????
Answer:
GMOs are created by selecting and inserting a particular gene into a plant to produce a desired trait – such as resistance to pesticides. ... This type of selective or traditional breeding involves crossing thousands of genes, which is different than how gmos are made.
Explanation:
Answer:
GM is a technology that involves inserting DNA into the genome of an organism. To produce a GM plant, new DNA is transferred into plant cells. Usually, the cells are then grown in tissue culture where they develop into plants. The seeds produced by these plants will inherit the new DNA.
Transcribe the following strand of DNA: ATTGTCGA
Answer:
TAACAGCT
T is the opposite of A and vise versa
C is the opposite of G and vise versa
Answer:
TAACAGCT
Explanation:
Hope it helps you!!!
PLEASE HELP!!
For the presentation you will research and provide summaries for manned and unmanned explorations of your
choice. The presentation should be about twelve slides in length. Your presentation will include:
Title
Introduction - gives an overview of the presentation
Time line of missions - must include 3 manned and 3 unmanned missions
Description of each of the missions in the timeline (1 mission per slide)
(a) Name and date of mission
(b) Purpose of missions
(c) Results or findings from missions
Scientific advance - describe a scientific advancement that has led to an engineering improvement in
space exploration
Engineering advance - describe an engineering advance that has led to greater knowledge about the
solar system
Sources - list the websites and other sources you used
Remember to make a list (i.e., bullet points) on each slide. The slides should feature the highlights of the main
idea. The bullet points should be short phrases (at most, one sentence) that highlight key points.
.
.
ik
Answer:
HERE IS MINE HOPE IT CAN HELP, STAYED UP ALL NIGHT.
Explanation:
I CUT OUT MY NAME AND GRADE, CHANGE UP THE BACKGROUND OR SOMTHING IF YOUR GOING TO USE THIS.
HAPPY I COULD HELP M8, WISH ALL OF YALL USING THIS LUCK WITH YOUR GRADES. =]