Meiosis is a form of cell division that occurs in the sex chromosomes. This form of division ensures genetic diversity and also allow for the chromosome set to be halved.
The events from above that lead to new genetic combinations in the gametes include:
Prophase I: Crossing over between homologous chromosomes occurs.
Metaphase I: Tetrads line up at the metaphase plate
(1 and 2) option a.
During meiosis, possibilities of new genetic combinations occurs which allows for variations to exist between the offspring and parents. These ensures that offspring are not entirely identical to the parents and also allow for survival and other benefits.Learn more about genetic combinations: https://brainly.com/question/8418041
Describe convection currents
Answer:
it is a process whereby energy moves from one place to another
Explanation:
What is the shape of an onion cell?
Answer:
The general shape of an onion cell is square or rectangular. The interior of the cell is easy to see and focuses well for microscopic observation.
Explanation:
Answer:
An onion cell's general shape is either square or rectangular in shape. The interior of the cell is easy to see and focuses well for microscopic observation, thanks to its transparent structure.
Explanation:
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edwin hubble developed a classification scheme for galaxies. by what characteristic did he classify galaxies?
Edwin Hubble classified galaxies according to their SHAPE. He was one of the most recognized astronomers in the last century.
Edwin Hubble was fundamental for deciphering the nature of the Universe.
Edwin Hubble developed a system to classify galaxies according to their shape into four types: spiral galaxies, elliptical galaxies, barred spiral galaxies, and irregular galaxies.
E. Hubble also categorized spiral galaxies depending on the central bulge size and arm texture.
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What does a plant need to create a glucose molecule in photosynthesis?
Choose all correct answers.
carbon dioxide
sunlight
water
oxygen
Answer:
carbon dioxide, water, sunlight
Can a virus cause a change in your DNA?
Please answer this don’t just take the points please I need help
Answer:
Yes , when viruses infect us, they can embed small chunks of their genetic material in our DNA. Although infrequent, the incorporation of this material into the human genome has been occurring for millions of years. As a result of this ongoing process, viral genetic material comprises nearly 10 percent of the modern human genome. Over time, the vast majority of viral invaders populating our genome have mutated to the point that they no longer lead to active infections. But, as scientists funded by the National Institutes of Health have demonstrated, they are not entirely dormant.
Explanation:
Answer:
Viruses are continuously changing as a result of genetic selection. They undergo subtle genetic changes through mutation and major genetic changes through recombination. Mutation occurs when an error is incorporated in the viral genome. Recombination occurs when co infecting viruses exchange genetic information, creating a novel virus.
so i will say YES
Explanation:
BRAINLIEST?What are differences between the structures ofDNA and RNA?
Sources:
The Differences Between DNA and RNA - ThoughtcoDifference Between DNA and RNA - ByjusHow did the new island in the Pacific Ocean near the Vava'u Islands form? See below
for a picture of the new islands and for the location on earth.
Answer:
They were created from the subduction of the western-moving Pacific plate under the Australia-India plate at the Tonga Trench. The Tongan Islands sit on the Australia-India plate just west of the Tonga Trench. These volcanoes are formed when materials in the descending Pacific plate heat and rise to the surface.
Explanation:
The new island in the Pacific Ocean near the Vava'u Islands forms as divergent plates allow magma to come to the surface at this location. The correct option is a.
What are Vava'u Islands?Vava's island is a group of islands that contain one large island and 40 smaller islands. They are present in the Tonga region.
They were formed as a result of the subduction of the Australia-India plate beneath the western-moving Pacific plate at the Tonga Trench.
West of the Tonga Trench on the Australia-India plate is the Tongan Islands. When elements in the descending Pacific plate heat up and rise to the surface, volcanoes like this are created.
Therefore, the correct option is a. divergent plates allow magma to come to the surface at this location.
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Which event is caused by gravity
1.Water enters an aquifer through infiltration
2. Water exits a person through perspiration
3. Water changes from ice to liquid water through melting
4.Water moves from the atmosphere to a glass surface through condensation
Answer:
1 water enters an aquifer through infiltration
Which part of the mitochondrion contains the proteins that carry out oxidative phosphorylation?.
Answer:
Inner Mitochondrial Membrane
Explanation:
Oxidative phosphorylation takes place in the inner mitochondrial membrane, in contrast with most of the reactions of the citric acid cycle and fatty acid oxidation, which take place in the matrix.
which enzyme can repair breaks to the phosphate-sugar backbone of dna?
Answer:
Helicase unwinds the DNA and creates the replication fork for other enzymes to bind.
Explanation:
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why is it important photosynthetic organisms to have access to water
Answer:
Plants also need water for photosynthesis. Photosynthesis is what plants do to create their food, and water is critical to this process. ... The water from the leaves evaporates through the stomata, and carbon dioxide enters the stomata, taking the water's place. Plants need this carbon dioxide to make food.
What are the two types of reactions enzymes facilitate?
what is the general purpose of the light reactions of photosynthesis
Answer:
The overall purpose of the light-dependent reactions is to convert light energy into chemical energy. This chemical energy will be used by the Calvin cycle to fuel the assembly of sugar molecules.
Explanation:
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a _________ is an example of an endotherm, and a ________ is an example of an ectotherm.
Answer: People, polar bears, penguins, and prairie dogs, like most other birds and mammals, are endotherms. Iguanas and rattlesnakes, like most other reptiles—along with most fishes, amphibians, and invertebrates—are ectotherms.
Fleas and mosquitoes sometimes transmit disease pathogens such as bacteria and viruses from one individual to another. Such agents (fleas and mosquitoes) are called
Answer:
Insects
Explanation:
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__________ encompasses any unwanted or nonconsensual sexual contact.
Answer:
sexual assault
Explanation:
how do ectotherms primarily control their body temperature?
Answer:
Ectotherms control their body temperature by relying on coverage of fur or feathers, which act as insulation. ... Brown fat has capillaries that transport heat throughout the body to warm it Brown fat cells have less cytoplasm, which prevents heat loss from the body.
A process of growth maintence and division
Answer:
In unicellular organisms, cell division is the means of reproduction; in multicellular organisms, it is the means of tissue growth and maintenance. One cell gives rise to two genetically identical daughter cells during the process of mitosis. ...
Explanation:
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State the parts of the small intestine
What is the temperature shown on the thermometer?
Answer:
22
Explanation:
the thermometer goes by 2
Sperm cells have a whip like ____ to move them through a liquid.
Answer:
tail
Explanation:
Answer:
flagellum
Explanation:
a slender threadlike structure, especially a microscopic appendage that enables many protozoa, bacteria, spermatozoa.
Sofia’s favorite meal is breakfast, and she is careful to include healthy components along with her favorite foods. She knows breakfast helps to keep her energy levels up until lunch. Sophia's digestive system helps her body get energy from food. How do the nutrients from food get to the body's cells? A. The nutrients are distributed by the digestive system to the parts of the body that need them. B. The nutrients are picked up and transported around the body by blood from the circulatory system. C. The nutrients are absorbed directly into the cells that need them. D. The circulatory system brings nutrients to the digestive system to be processed for the cells.
Answer: c
Explanation:because it needs cells I think…
The nutrients from the food get to the cells of the body by the action of two organ systems i.e. the digestive system and the circulatory system.
What is the role of the digestive system?The digestive system may be defined as a type of organ system that significantly deals with the breakdown of food substances into simpler components that can easily be consumed by the body.
According to the context of the question, the food that we eat reaches the stomach through the esophagus where multiple enzymes perform their roles. After the stomach, the food may be passed to the small intestine which is absorbed here and then the nutrients assimilate in the blood.
Through the blood, the nutrient can be transported around the body by blood from the circulatory system. Thus, the correct option for this question is B.
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Your friend wants to have her DNA tested because she thinks it will help her identify what foods she should eat. What is your advice to her
Answer:
IT WANT IT JUST SSY YOUR BLOOD TYPE
What is the difference between a species and a population?
Answer:
species is the type of organism population is the amount of said organism
Explanation:
Question 7 of 10
What is the difference between a scientific law and a scientific theory?
O A. A scientific law has been proved with scientific evidence. A
scientific theory can change when new evidence is found that
does not support the theory.
B. A scientific law is supported by research. A scientific theory is only
an educated guess.
C. A scientific law describes how natural events happen. A scientific
theory is an explanation of natural events.
D. A scientific law involves mathematics. A scientific theory is a
description based on observations.
Answer: I belief its B. A scientific law is supported by research. A scientific theory is only an educated guess.
-Like theories, scientific laws describe phenomena that the scientific community has found to be provably true. Generally, laws describe what will happen in a given situation as demonstrable by a mathematical equation, where as theories describe how the phenomenon happens.
Order the steps of the urine formation process
Answer:
glomerular filtration, reabsorption, and secretion.
Explanation:
Which process does the grass use to make the food this horse needs?
A. Photosynthesis
B. Digestion
C. Respiration
D. Eating
why would an ecosystem with only a few different types of organisms have a less complex food web than an ecosystem with many different of organisms
Answer:
An ecosystem with only a few different types of organisms has a less complex food web than those with many different types because in a less complex food web, only a few organisms are needed to be presented, more nutrients are absorbed and less energy is needed to complete the food web.
While walking along the street, you and your friend see an elderly woman whose left arm appears to be swollen to several time its normal size. Your friend remarks that the woman must have been in the tropics and contracted a form of filariasis that produces elephantiasis. You disagree, saying that it is more likely that the woman had a radical mastectomy (removal of the breast because of cancer). Explain the rationale behind your answer.
How do you know that flowers have undergone fertilizer even before they turn into fruits?
Answer:
we can know for eg an apple when u buy it and scrape the skin of the apple if you wind some waxy substance from it we can say this has been done to increase the shine so customers think this is a good apple and please do was fruit and vegetables after buying them throughly.