During meiosis, which of the following allows for variations in alleles in the gametes
formed?
A) homologous chromosomes stay together
B)chromosome crossover
C)daughter cells identical to parent cells
D)Genetic drift
Answer:
D. I'm pretty sure at least
True or false: when we say "left" we are talking about the doctor's point of view when looking at the heart
Answer:
I think the answer might be false. Im not 10% sure. Good luck though!
Explanation:
Give an example of how biotechnology might be used to cure disease.
Answer:
Biotechnologies may be used to study the genetic material of viruses and bacteria to determine whether a disease is caused by particular disease-producing agents. Its techniques are also used to understand how genetic factors contribute to human disease.
Explanation:
Answer:
These products help treat and prevent diseases. From the Ebola vaccine to mapping human DNA to agricultural impacts, medial biotechnology is making huge advancements and helping millions of people. Some of the most recent uses of biological tech is work in genetic testing, drug treatments, and artificial tissue growth.
Explanation:
Which of the following two elements are most likely to form an ionic bond.
H and s
Mg and O
C and O
H and Cl
Answer:
the answer would be magnesium and oxygen
Explanation:
hope this help
Answer:
thw answer is magnesium and oxygen
la cromatina esta formada por adn asociado a
Answer:
La cromatina es una sustancia dentro de un cromosoma que consiste en ADN y proteínas. El ADN lleva las instrucciones genéticas de la célula. Las principales proteínas de la cromatina son las histonas, que ayudan a empaquetar el ADN de una forma compacta que cabe en el núcleo celular. Los cambios en la estructura de la cromatina se asocian con la replicación del ADN y la expresión génica.
Explanation:
Identify one environmental factor that could cause a base sequence in
DNA to be changed to a different base sequence.
Explanation:
Environmental exposure to certain chemicals, ultraviolet radiation, or other external factors.
An organism has control over inherited traits.
To model ocean water in different places on Earth, a student pours equal amounts of water in two containers. He adds the same amount of salt to each container and stirs until the salt is completely dissolved. He places Container 1 in a cool place in the house and Container 2 outside in the sunlight. After two hours, he tests the salinity of water in each container. What should the student MOST LIKELY conclude, and why?
Answer:
The correct answer would be - container 2 will have less salinity than container 1.
Explanation:
The given experiment can give an idea about how the temperature of surroundings can affect the salinity, volume, and density of the water that has the same amount of water and salt dissolved in it. The independent variable or the only variable that is different is their place that has a difference in the temperature. Container 1 is placed in a cool place while container 2 is placed in sunlight.
We know that the warmer the water it takes more space so, therefore, less density. Density and salinity both have a positive relationship so an increase in density increases the salinity and vice versa. Thus, here the salinity of container 2 would be low in comparison to container 1
why animals need a circluatory system
Answer:
All cells in the body need to have oxygen and nutrients, and they need their wastes removed. These are the main roles of the circulatory system. The heart, blood and blood vessels work together to service the cells of the body.
Explanation:
Marine biologists are studying stickleback fish populations. There are two distinct variations in the sticklebacks based on phenotypes. They are found with the three spines more commonly in marine ecosystems while they are more commonly found without the three spines in freshwater ecosystems. This has been observed in many marine and freshwater ecosystems across the globe. What explains the variation seen in the image here across different aquatic ecosystems?
Answer:
Presence of predators.
Explanation:
Presence and absence of predators is the main cause of the presence of spines on stickleback fish populations because these spines helps in the protection against predators. The stickleback fish populations that lives in marine ecosystem have spines because there are many predators are present while on the other hand, stickleback fish populations of freshwater ecosystems have no spines due to no predator so they acquire the adaptation of having no spines.
In this exercise we have to explain the variations of the aquatic system, so we have to:
In this case, as long as a large increase in a specific population of fish takes place, we know that the predators of this system are needed.
What factors interfere in an ecosystem?They are:
Biotic factors: producing beings (plants and algae), consuming beings (herbivores and carnivores) and decomposing beings (fungi and bacteria). Abiotic factors: water, light (light energy), heat (thermal energy) and nutrients (chemical substances).See more about ecosystem at brainly.com/question/1673533
please help i am giving away brainiliest
1. Which body system is primarily responsible for protecting you against pathogens?
A. Digestive system
B. Nervous system
C. Endocrine system
D. Immune system
No dam links
The process of photosynthesis only impacts plants and their ability to survive.
Group of answer choices
True
False
True
Explanation:
true because photo synthesis helps only to survive because they can prepare food only in persence of chlorophyll
2.) State the relationship between photosynthesis and cellular respiration.
Answer:
Photosynthesis converts carbon dioxide and water into oxygen and glucose. Glucose is used as food by the plant and oxygen is a by-product. Cellular respiration converts oxygen and glucose into water and carbon dioxide. Water and carbon dioxide are by- products and ATP is energy that is transformed from the process.
Explanation:
Unlike other organelles, ribosomes are not surrounded by a
Answer:
1. Membrane
Explanation:
Answer:
a membrane
Explanation:
If a father has the genotype DD and a mother has the genotype dd, what would be the child’s genotype
FIRST TO ANSWER GETS 25 POINTS AND BRAINLYEST A. Describe how electricity is generated in a coal power plant.
B. Provide one example of a RENEWABLE ENERGY SOURCE that creates electricity
in a "similar" way.
Answer:
A. By burning coal in a boiler to produce steam. The steam produced, under pressure, flows in a turbine, which spins a generator to create electricity
B. Wind turns the propeller-like blades of a turbine around a rotor, which spins a generator, which creates electricity
Why is it important for your brain to control many functions automatically?
Answer:
The brain controls what you think and feel, how you learn and remember, and the way you move and talk. But it also controls things you're less aware of — like the beating of your heart and the digestion of your food.
Think of the brain as a central computer that controls all the body's functions. The rest of the nervous system is like a network that relays messages back and forth from the brain to different parts of the body. It does this via the spinal cord, which runs from the brain down through the back. It contains threadlike nerves that branch out to every organ and body part.
Explanation:
If you brain does not, or is unable to perform multiple tasks automatically, you could have trouble breathing on your own, your heart could have problems, even your thought process, movement, and digestion could malfunction. Which could cause a multitude of complications.
Hope this helped, have a great day/night :}
I need help please I wanna pass this class
Answer:
Explanation:
Answer: I mean the instructions are pretty clear and you still ask for help?
What is the difference between a haploid, diploid, and zygote?
Answer:
[tex]\color{Blue}\huge\boxed{Answer} [/tex]
Haploid" refers to any cell that has 23 chromosomes (half of the total 46). "Gametes" are specifically sex cells that have 23 chromosomes. "Diploid" refers to any cell that has all 46 chromosomes. "Zygote" is the result of two gamete (haploid) cells fusing, and becoming a diploid cell.
Haploid means n, Diploid means 2n, while zygote is the fusion of two gametes that possess a nature of 2n.
What do you mean by Gametes?A Gamete may be defined as a cell containing only one set of dissimilar chromosomes, or half the genetic material necessary to form a complete organism.
Haploid is the quality of a cell or organism having a single set of chromosomes. A Diploid is a cell or organism that has paired chromosomes, one from each parent. In the case of humans, the haploid number is equal to 23, while the diploid number is equal to 46. A zygote is the fusion of two gametes that possess a nature of 2n, which is equal to 46.
Therefore, Haploid means n, Diploid means 2n, while zygote is the fusion of two gametes that possess a nature of 2n.
To learn more about Haploid and diploid, refer to the link;
https://brainly.com/question/12383127
QUICKLY!!
If the DNA strand is ATTTAG, what is the mRNA strand?
positive impacts humans have on water
Answer:
Positive Human Interaction When people build dams channeling off large bodies of water, the water builds up along the edge of the lake, pond, or stream creating very fertile soil from the constant watering and these areas on the outside of lakes and ponds are used by humans for growing and farming crops.
Explanation:
Which block has the lowest density?
Answer:
Explanado yo have a picture
What sequence of bases on RNA would match or pair with the following DNA sequence:
ATC
A. ATC
B. GUA
C. UAG
Which is the answer?
I thin the answer is b I think I hope I'm sure did u pass it
In order from youngest to oldest, what is most likely the correct order for the rock layers??
Answer: 1, 5, 2, 3, 4.
Explanation: Using process of elimination layer four should be the oldest and the only one that has layer four last is number 2. Therefore I assume it is number 2.
_____ can be passed from mother to child via breast milk.
Answer:
3 viruses CMV, HIV and HTLV-I frequently cause infection as a result of breast milk transmission.
7. (True Story) In Denmark, a husband and wife who had been unsuccessfully trying to have a
baby went to a fertility clinic. Sperm and eggs were collected from father and mother, and
combined in a petri dish, creating several "test-tube babies". These babies were implanted in the
mother and 9 months later she ſlelivered twins, one with lightly pigmented skin and one with
darkly pigmented skin. Because this seemed strange, a DNA test was conducted and it was
found that both children were related to the mother, but only the light skinned child was related to
the father. How can this be explained? (Hint, there was no infidelity)
Answer:a
a possible explanation for this occurrence is that a test tube or dropper was accidentally used repeatedly without being sterilized, causing sample cross-contamination. DNA in this test case did not confirm that the father of the second child was another client of the fertility clinic who had never met the mother...therefore this is a possibility.
Explanation:
Which of the following is a protist?
a a mushroom
b a ladybug
C a palm tree
d None of these are protists.
Answer:
C.a palm tree
Sana makatulong
Carry
Drag the tiles to the boxes to form correct pairs.
Match the causes with their effects.
injecting fracking fluids
into the ground
oil spills during transport
on a ship
deforestation
destroys animal habitats and
causes topsoil to erode
pollutes groundwater with
dangerous chemicals
harms aquatic creatures
and vegetation
It destroys animal habitats and causes topsoil to erode- deforestation 2) pollutes groundwater with dangerous chemicals- injecting fracking fluids into the ground 3) harms aquatic creatures and vegetation- oil spills during transport on a ship.
What is fracking fluids?In order to enhance the amount of hydrocarbons that may be extracted, drilling operations use fracking fluid (also known as frac fluid). The fluid stops the well from corroding. Among other things, it prevents blockages, bacteria from growing, and lubricates the extraction process.
In summary, the chemical composition varies from well to well and is complicated. Depending on the exposure amount, several of these substances can be dangerous to human health.
According to estimates from the oil and gas sector, chemical additives only make up about 1%.
Therefore, It destroys animal habitats and causes topsoil to erode- deforestation 2) pollutes groundwater with dangerous chemicals- injecting fracking fluids into the ground 3) harms aquatic creatures and vegetation- oil spills during transport on a ship.
To learn more about fracking fluids, refer to the link:
https://brainly.com/question/29487213
#SPJ2
Answer:
injecting fracking fluids into the ground - pollutes groundwater with dangerous chemicals
oil spills during transport on a ship - harms aquatic creatures and vegetation
deforestation - destroys animal habitats and causes topsoil to erode
Explanation:
Plato
A chromosomal alteration in which one or more
pairs of homologous chromosomes fail to separate
normally during meiotic cell division is known as... 1.)an addition
2,) crossing over
3.) nondisjunction
4.) translocation