Answer:
If both parents do not have sickle-cell anemia, than the possibility is low.
Explanation:
If both parents have the sickle-cell trait, their offspring has a 25 percent chance of getting sickle cell anemia and a 50 percent risk of them having sickle cell trait. Meanwhile, there is also a 25 percent chance of the child not getting it at all.
If one parent has sickle cell anemia and the other has sickle cell trait, then their offspring with have a 50 percent chance of getting sickle cell anemia and a 50 percent chance of getting a sickle cell trait.
When both parents have sickle cell anemia, their child will definitely have it.
Answer:
No, 0% chance
Explanation:
none of the parents are carriers of this disease, and are homozygous dominant to the normal red blood cells, so they will not inherit this disease
Answer:
Oxygen is essential for respiration because the body uses it to 'burn' food molecules. Animals take in oxygen when inhaling and give off carbon dioxide when exhaling. ... This is why rescue breathing works - it can supply a non breathing patient with enough oxygen to support life.Nitrogen is essential for all living things because it is a major part of amino acids, which are the building blocks of proteins and of nucleic acids such as DNA, which transfers genetic information to subsequent generations of organisms.
Explanation:
Free oxygen can be problematic for organisms due to its high reactivity and the production of reactive oxygen species (ROS), causing oxidative stress and various health problems. Excess free oxygen can lead to diseases in humans, while some organisms cannot tolerate free oxygen at all and will die if exposed to it.
Free oxygen can be a problem for many organisms due to its high reactivity. In aerobic organisms, free oxygen can lead to the production of reactive oxygen species (ROS) such as superoxide radicals, hydrogen peroxide, and hydroxyl radicals, which can damage cellular structures and molecules, including proteins, lipids, and DNA. This can result in oxidative stress and lead to various health problems.
For example, in humans, excess free oxygen can cause damage to cells and tissues, leading to diseases such as cancer, cardiovascular disease, and neurodegenerative diseases. Organisms that have evolved to survive in low-oxygen environments, such as certain bacteria and parasites, may be particularly sensitive to the presence of free oxygen and can even be killed by exposure to high levels of it.
In contrast, other organisms, such as obligate anaerobes, cannot tolerate the presence of free oxygen at all and will die if exposed to it. These organisms lack the enzymes and metabolic pathways required to deal with the toxic effects of oxygen. Examples of obligate anaerobes include some types of bacteria that live in environments without oxygen, such as deep-sea hydrothermal vents or the intestines of animals.
#SPJ2
Answer:
A way to answer scientific questions
Explanation:
AP3X
is the step in science when you do an experiement
1. Make a question
2. background research
3. create a hypothesis
4. test/experiement
5. analyse
6. conclusion
7. share - because when you share it to others, others can repeat your experiment and prove is it true or false or is it really science
Eliminate
B) cause algae and plants to overgrow and pollute the water when they die.
C) accumulate in animals and build up in toxic concentrations as they pass through the food chain.
D) eliminate most of the algae and plants in the food chain, causing animals to starve, at higher levels of the food chain.
C
Pesticides, such as DDT, often have harmful effects on aquatic ecosystems because they accumulate in animals and build up in toxic concentrations as they pass through the food chain. This is referred to as bioaccumulation.
Explanation:
As the DDT is ingested it accumulates in the body tissues because the body of the organisms is unable to break down and excrete the chemicals fast enough or at all. This bioaccumulation also goes up the food chain/web as higher organisms prey on the lower organism on the web. For example, the aphids feed on the leaves sprayed with DDT. They are then preyed on by beetles and flies and bugs. These bugs are then eaten by birds. Eventually, the DDT will be found in the tissues of the birds, even in higher concentrations (due to biomagnification).
Learn More:
For more on bioaccumulation check out;
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Answer:C
Explanation:USATESTPREP
DNA is made from RNA, which is created from proteins.
B.
Proteins are made from RNA, which is created from DNA.
C.
RNA is made from DNA, which is created from proteins.
D.
Proteins are made from DNA, which is created from RNA.
Answer:
meioisis
Explanation: