Crossing over is a mechanisms involved in introducing genetic variation. When the arm of a chromatid crosses over the arm of another chromatid, it results in additional variation in the DNA of each sex cell formed. Option D.
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Crossing-over between homologous chromosomes (prophase 1), the random lining of homologous chromosomes (metaphase 1), and random fertilization are the mechanisms involved in genetic variation.
The Crossing-over events occur between two homologous chromosomes in the equatorial plane and make the daughter cells genetically different from the original one.
The Chiasma is the position where two homologous chromatids interchange genetic information, giving a place for new genetic material or information to be provided to descendants.
After crossing over, homologous chromosomes get separated again.
So, according to this information, when the arm of a chromatid crosses over the arm of another chromatid, it results in additional variation in the DNA of each sex cell formed.
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Why do traits increase within a population over time
When crops have two parents, their offspring will all be DIFFERENT.
A True
B False
Explanation: In sexual reproduction one full set of the genes come from each parent. Living things produce offspring of the same species, but in many cases offspring are not identical with each other or with their parents. ... Changes in genes can be caused by environmental conditions, such as radiation and chemicals.
Cell organelles that are responsible for digesting food, worn out organelles and other
cellular wastes are called?
In your words, give a brief overview of the process of photosynthesis. Include where each phase takes place within a plant cell.
Is reproduction necessary for maintenance of our organism?
Answer: yes, it is necessary.
Explanation: if an organism were to stop reproducing, the entire species would become extinct. Reproducing maintains an organism and the ecosystem it lives in.
Need help please. Which statement describes the Chesapeake Bay?
*One of Virginia's major rivers flows into the Chesapeake Bay.
*The portion of the bay located in Virginia is on its east coast.
*Chesapeake Bay is one of the largest watersheds in Virginia.
*Less than half of Virginia's water drains into the Chesapeake Bay.
Answer: C I'd say
Explanation: The Chesapeake Bay is the largest estuary in the United States. The Bay is located in the Mid-Atlantic region and is primarily separated from the Atlantic Ocean by the Delmarva Peninsula with its mouth of the Bay at the south end located between Cape Henry and Cape Charles. So tldr: C
Brainliest
The greatest biodiversity of species of living organisms is found in a
Desert
Rain Forest
Estuary
Taiga
Answer:
B) Rain forest
Explanation:
NO LINKS Explain how a knee-j erk reflex occurs.
Answer:
The sensory neuron receive the stimulus by tapping at the knee cap and its going to send the message all the way to the spinal cord. And then it will make a U-turn and they will send the message back to motor neurons and then back to the knee cap so that the muscle will contract and your knee will just kick up.
Explanation:
What are the four types of receptors? What kind of stimulus does each one respond to?
Explanation:
Broadly, sensory receptors respond to one of four primary stimuli:
• Chemicals (chemoreceptors)
• Temperature (thermoreceptors)
• Pressure (mechanoreceptors)
• Light (photoreceptors)
____________ is the study of the interactions among all organisms and their physical environment. A ____________ is the place where an organism lives. A ____________ is all the individuals of the same species found in the same location. A ____________ consists of all of the various populations interacting at a locale. An ecosystem contains a community of populations and also the ____________ environment. The biosphere encompasses all of the ____________ of the Earth's soil, water, and air where living organisms are found.
Answer:
Ecology is the study of the interactions among all organisms and their physical environment. A habitat is the place where an organism lives. A population is all the individuals of the same species found in the same location. A community consists of all of the various populations interacting at a locale. An ecosystem contains a community of populations and also the non living environment. The biosphere encompasses all of the ecosystem of the Earth's soil, water, and air where living organisms are found.
Explanation:
Ecology is the study of how living organisms interact with each other as well as their environment.
Habitat is a natural environment where an organism or community of organisms live.
A population is a group of organisms of the same species living in a given area while a community consists of populations with different species living in a given area and interacting with each other.
An ecosystem consists of different living organisms (all the populations) in an area as well as the non-living environment.
The biosphere encompasses all of the ecosystem of the Earth's soil, water, and air where living organisms are found.
Ecology is the study of the interactions among all organisms and their physical environment. A habitat is the place where an organism lives. A population is all the individuals of the same species found in the same location. A community consists of all of the various populations interacting at a locale. An ecosystem contains a community of populations and also the non living environment. The biosphere encompasses all of the ecosystem of the Earth's soil, water, and air where living organisms are found.
what are the abiotic processes in carbon cycle?
Explanation:
Abiotic processes in the carbon cycles : Management of the carbon cycle is the focus of global warming. Respiration, deforestation, burning of fossil fuels, and forest fires are processes that put CO2 up in the atmosphere. Organisms eat plants, which is comprised of carbohydrates come from CO2 in the atmosphere.
a vial with water,bromothymol blue,carbon dioxide , and a plant are left for 24 hours in the light. the color of the solution turns from yellow to blue . this color change is due to the plant
The dissolution of bromothymol blue into the solution can change the colour of the solution from yellow to blue.
Why the colour of the solution change?The color of the solution turns from yellow to blue color due to the release bromothymol blue because plant can't absorb bromothymol blue so it dissolved in the solution which leads to the change of colour of the solution from yellow to blue.
So we can conclude that the dissolution of bromothymol blue into the solution can change the colour of the solution from yellow to blue.
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what niche do you think you have in your family?
Answer:
My brother is extremely artistic and can draw and animate really well. hes the arts while im the brains. Is that a niche lol?
A secretion responsible for the development of a deep voice and facial hair is synthesized by
1.) Structure F
2.) Structure B
3.) Structure C
4.) Structure G
The development of a deep voice is due to structure C.
What is the thyroid gland?The thyroid gland is the gland that is responsible for deep voice. The gland is found at the anterior of the neck just around the Adam's apple. Over-secretion of the thyroid gland leads to a very deep voice.
From the structure shown, the development of a deep voice is due to endocrine secretion of a hormone from structure C.
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Name 3 important organic molecules that are partially made from phosphorus.
Answer:
As part of the phosphate group, it is a component of DNA, RNA, ATP (adenosine triphosphate), and the phospholipids that form all cell membranes.
can anyone help me with this please
Here Is You Awnser's Hope It Helped :)
19 = Wave Length
20 = Compression
21 = Rare Fraction
22 = Displacement
23 = Crest
24 = Wave Length
25 = Trough
Species
Sequence of Amino
Acids in the Same Part
of the Hemoglobin
Molecules
Human
Horse
Gorilla
Chimpanzee
Zebra
Lys-Glu-His-Iso
Arg-Lys-His-Lys
Lys-Glu–His-Lys
Lys-Glu-His-Iso
Arg-Lys-His-Arg
O A Horse and Zebra are the least related.
O B. Human and Chimpanzee are the least related
O
C. Human and Zebra are more closely related than Human and Chimpanzee
D. Human and Chimpanzee are more related than any other pair
Answer:
D. Human and Chimpanzee are more related than any other pair
Explanation:
The image in this question shows a tabularized information on the amino acid sequence of hemoglobin protein in different species. This amino acid sequence can be used to deduce whether two or more species are closely related or not. The amino acid sequence of the hemoglobin of the different organisms are as follows:
- Human: Lys-Glu-His-Iso
- Horse: Arg-Lys-His-Lys
- Gorilla: Lys-Glu–His-Lys
- Chimpanzee: Lys-Glu-His-Iso
- Zebra: Arg-Lys-His-Arg
Based on the above sequences, it can be observed that the amino acid sequence of humans and chimpanzee are the same with little to no differences while other species that have similar sequences differ in one or two amino acids. This means that Human and Chimpanzee are more related than any other pair.

1. What organism that does
cellular respiration will you
include in your aquaponics
system
Answer:
Fish, Tilapia
Explanation:
Fish can live in the water tank
it releases carbon dioxide , which plants need for photosynthesis
ammonia from fish can also act as fertilizer for plant
If u want specific species, tilapia
can adapt to environment and withstand less than ideal water conditions
resistant to many pathogens and parasites
How is the cytoplasm divided between the two cells that result from mitosis in plant cells? In animal cells?
Answer:
The contractile ring shrinks through the center of the cell, evenly dividing the cytoplasm between the two halves. This indicates that cytokinesis is completed and the cell has been replicated.
Explain why the backbone of large macromolecules is made of carbon atoms rather than hydrogen atoms
What conclusion can you make regarding how humans affect biodiversity? Is evidence from the graph to support your answer
Answer:
Decrease population of staghorn coral and spotlight parrot fish.
Explanation:
Humans greatly affects biodiversity by decreasing the population of most of the organisms due to its activities. Human activities causes pollution in the environment as well as disturbed the habitats of many organisms that leads to decrease in their population. Humans activities releases carbondioxide gas in large concentration that will leads to the increase of pH of the ocean water which adversely affected the population of many marine animals such as staghorn coral and spotlight parrot fish etc so that's why we can say that human activities adversely affected biodiversity.
Write a message which must be put on the alcoholic drinks to alert pregnant women.
like a short message/warning
Answer:
Warning, it is advised if pregnant that you do not consume alcohol as it can cause discomfort or risk of injuring the foetus.
Explanation:
There are four main types of macromolecules that are synthesized and used in the metabolic processes of living cells. Name the type of molecules that are built from amino acids in the ribosomes of eukaryotic cells.
A. carbohydrates
B. lipids
C. proteins
D. nucleic acids
Answer:
C I'm pretty sure
Explanation:
Pls help me. And thank you so so much!
Answer:
A
Explanation:
got this
Which of the following is a process used by animals that produces carbon dioxide as a by-product?
Combustion
Diffusion
Photosynthesis
Respiration
Answer:
Respiration
Explanation:
Respiration is an exergonic process that involves the exchange of environmental oxygen and body carbon dioxide and the oxidation of glucose inside the mitochondria to produce energy which is partly stored in the ATP molecules as biologically useful energy.
Answer:
D
Explanation:
Lobster fishermen observe that the best lobster catches are now found north of the traditional fishing wounds. Scientists explain that the
ocean is warming due to climate change
What is the most likely outcome if global dimate change continues?
A Lobsters will develop thinner shells for any in warmer water,
B. Lobster populations will become extinct in the nen few years,
C Lotesters will grow in size because of a reduced number of predators,
D. Lobster populations will fluctuate in size as they adjust to change conditions
true or false? Body parts that share a common function but not common structure are called analogous structures.
What is the scientific name for a pig?
Refer to Animation: Filtration, Reabsorption, Secretion. Cells of the excretory tubule _________water by osmosis, from which we can conclude that the solute concentration in these cells must be _________ than in the filtrate.
Answer:
Remove and lower.
Explanation:
Cells of the excretory tubule remove water by osmosis, from which we can conclude that the solute concentration in these cells must be lower than in the filtrate. The excretory tubule remove excess amount of water from the cell through semi permeable membrane of the cell while on the other hand, the solute concentration in the cell is lower as compared to filtrate so that's why it can't diffuse from the cell by the process of osmosis.
Which best describes RNA?
Single-stranded & contains uracil and ribose
Single-stranded & contains thymine and ribose
Double-stranded & contains uracil and ribose
Single-stranded & contains thymine and deoxyribose