Answer:
A. XXDd
Explanation:
XX = female
Dd = heterozygous
What is a purine and a pyrimidine? Name them.
Answer:
Purines and Pyrimidines are nitrogenous bases that make up the two different kinds of nucleotide bases in DNA and RNA. The two-carbon nitrogen ring bases (adenine and guanine) are purines, while the one-carbon nitrogen ring bases (thymine and cytosine) are pyrimidines.
Explanation:
A recessive allele is expressed if there is no dominant allele present.
A) True B) False
Answer:
A) True
Explanation:
Why does the northern hemisphere experience Spring in March, while the Southern Hemisphere experiences fall?
Explanation:
because the tilt of the earth on its axis
Answer:
The Sun is directly overhead in the Northern Hemisphere in March The Southern Hemisphere receives more direct rays from the Sun in March. The Northern and Southern Hemispheres get the same amount of energy from the Sun in March.
Explanation:
i hope this makes sense and helps out a little bit :))
HELP ASAP!!!!
Describe a habitat in ur community that would support non vascular plant!!!!
Moist soils, Damp walls and mud regions where the water is not in limiting conditions are best suited for the growth of non vascular plants as they can not absorb and transport water to taller aerial organs.
would really appreciate a brainliest! Hope this helped! =)
Which of the following groups of parrots is most likely in Hardy-Weinberg equilibrium?
A. A group with 50 DD parrots, 30 Dd parrots, and 20 dd parrots.
B. A group with 30 DD parrots, 40 Dd parrots, and 30 dd parrots.
C. A group with 25 DD parrots, 50 Dd parrots, and 25 dd parrots.
D. A group with 50 DD parrots, 25 Dd parrots, and 25 dd parrots.
Answer:
B. A group with 30 DD parrots, 40 Dd parrots, and 30 dd parrots.
A group with 30 DD parrots, 40 Dd parrots, and 30 dd parrots is most likely in Hardy-Weinberg equilibrium.
What do you mean by Hardy-Weinberg equilibrium?The Hardy–Weinberg principle, also known as the Hardy–Weinberg equilibrium, model, theorem, or law, states that allele and genotype frequencies in a population will remain constant from generation to generation.
The Hardy-Weinberg equilibrium is a principle stating that the genetic variation in a population will remain constant from one generation to the next in the absence of disturbing factors.
For populations in the Hardy-Weinberg equilibrium, the equation connects allele frequencies to genotype frequencies. This equation allows us to compare a population's genetic structure in reality over time to the expected genetic structure.
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Which era makes up the vast majority of Earth's history?
O A. Mesozoic
O B. Palezoic
O C. Cenozoic
O D. Precambrian
Answer:
Precambrian era is the longest era in the Earth's history. It began 4600 million years ago and ended about 540 million years ago.
Explanation:
Precambrian era makes up the vast majority of Earth's history. So, the correct option is D.
What was Precambrian era?The majority of the history of the planet occurs during the Precambrian epoch. The Precambrian, which occurs before the current Phanerozoic Aeon, is the earliest period in Earth's history. The Cambrian, the earliest period of the Phanerozoic Aeon, is named after Cambria, the Latinized name for Wales, where rocks of this era were first investigated, hence the name "Precambrian."
The Precambrian period is known as the "Age of Early Life." The Precambrian period saw the formation of continents, the emergence of our current atmosphere, and the evolution and flourishing of early life. The world's oceans were home to soft-bodied animals like worms and jellyfish, while the land remained sterile.
Therefore, the correct option is D.
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The membrane that lines the thoracic cavity walls is the
Why did Gregor Mendel use peas in his experimentsGregor Mendel’s research formed the basis of the field of
Answer:
Peas have characteristics that have two forms. Scientists often use fruit flies as a method to test hypotheses about human genes.
Explanation:
This was simulation. What are some variables that this peppered moths simulation does not address?
Answer:
The simulation only shows how a population can change overtime in response to the changes in the environment. During the industrial revolution, one particular phenotype of moths had an advantage over the other and hence, was subjected to natural selection. What this simulation does not tell us is the causality and correlation aspect of the change that occurs in the moths. Correlation does not equal causation, and the simulation does not shed any light on these variables in this case.
Explanation:
Hope that answers the question, have a great day!
Which of the following statements are not true of carbohydrates?
A. Triglycerides are the most common type.
B. Monosacharrides, disacharrides, and polysacharrides are the most common types.
C. They are the most readily available source of energy for organisms.
D. Certain carbohydrates are enzymes or catalysts.
Answer:
this is very helpful to you
Explanation:
thank you
Example of how organisms that were previously thought of as related are actually more genetically related to organisms outside their species?
Answer:
Explanation:
Examples includes the relationships between chimpanzees, gorillas and humans. It is actually believed that the chimpanzees are more closely related to humans. About 99% of ther genome is thought similar to humans while for the gorillas about 98%.
But then, it is thought that chimpanzees and gorillas should be closely related to each other than to humans, but comparison of their genomes has shown that across 15% of the gorillas genome, they share a closer relationship with humans than with chimpanzees.
HELP PLS!!!!!!!!!!!!
A good environmental decision _____.
has no ecological costs
discounts the environmental costs
should have more benefits than costs
has only environmental benefits
ILL GIVE 40 POINTS TO WHOME OVER IS RIGHT
HELPPPPPPPPPPPPPP MEEEEEEEEEEEEEEEEEEEEEEE
1. What do you call metamorphic rock formed from igneous rock?
2. What do you call metamorphic rock formed from sedimentary rock?
Explanation:
1.gneiss metamorphic rock formed igeous rock
2.called met
Comparing the skeletons of which of the following fish would
best show the evolution of a fish species?
a male fish and a female fish that could produce offspring
the same fish just before it received a cut and after it healed
a fish that lived recently and a fish that lived a long time ago
the same fish just after it hatched and when it was full-grown
Answer:
C. a fish that lived recently and a fish that lived a long time ago
Good luck with it :)
PLEASE HELP!! ASAP!! I JUST NEED THE ANSWER!!! I WILL MARK YOU BRAINLIEST!!!
Which one of the following most accurately demonstrates the flow of energy in an ecosystem?
a
sun's light > predators > producers
b
producers > predators > sun's light
c
sun's light > producers > predators
d
predators > sun's light > producers
Answer:
The answer is C .
Explanation:
As the producer gets sunlight from the Sun to produce its own food.
Predators gets food from the producer.
Answer:
C.
Explanation:
Some laboratory mice are spotted, due to a dominant gene. Solid color is recessive. A solid color female mouse is mated to a spotted male. Both parents are homozygous. What percentage of mice should be found in the litter?
Answer: percentage of mice that will be spotted is 100%, and 0% chance of being solid colored.
Explanation: First, homozygous means each parent have matching chromosomes (Like XX, instead of Xx)
Lets make a punnet square and show the data. We will use 'S' for spotted and 's' for solid
The punnet square shows that the percentage of mice that will be spotted is 100%, and 0% chance of being solid colored.
Hope this helps :)
The percentage of mice that will be spot-ted is 100%, and 0% chance of being solid colored.
Calculation of the percentage:In the first time, h-o-m-o-z-y-g-o-u-s means each & every parent should have matching chromosomes (Like X-X, instead of X-x)
So based on this, we can say that The percentage of mice that will be spot-ted is 100%, and 0% chance of being solid colored.
in this way, the percentage is determined.
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Which feature separates watersheds?
A.) basins
B.)bays
C.)ridges
D. )rivers
Answer:
c
Explanation:
C.) Ridges are the feature that separates watersheds.
What is watershed ?A watershed is a region or area of land that collects and drains water into a particular river, stream, or other body of water.
Ridges or high points of land are critical in separating watersheds because they provide the boundary or border between two adjacent watersheds. When rain falls or snow melts, the water will flow downhill towards the closest body of water.
However, if that body of water is separated from another by a ridge, the water will flow down opposite sides of the ridge, into different watersheds.
Ridges are created by geologic processes such as tectonic uplift or erosion, and can vary in size and height. In some cases, a single ridge can divide a large drainage basin into two or more smaller ones, each with its own unique set of characteristics and ecosystems.
The boundary or border of a watershed is formed by a ridge or high point of land that separates one watershed from another. Water that falls on one side of the ridge flows into one watershed, while water that falls on the other side of the ridge flows into a different watershed.
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i need some help plz
Answer:
C. A sperm fused w/ an egg
Explanation:
This is the definition of a zygote.
A. is a blastula.
B. is simply a gamete found in females.
C. is the answer.
D. is the placenta.
If the food source is affecting the buffalo population, what do you predict the graph of the food source would look like? Either draw a graph or write a prediction.
Answer:
I think the number of buffalo should reduced,for the grass to grow better and act as the food for buffalo
If the food source is affecting the buffalo population, the number of buffaloes in the area should decline.
What do you mean by Population?A population may be defined as the number of individuals of the same species in a particular area at a given time.
Anything that affects the population of any species, it definitely reduces the number of specific species in a particular area. Then the affecting resource has the chance to spread in a much better way.
Therefore, if the food source is affecting the buffalo population, the number of buffaloes in the area should decline.
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describe why you don't look like an elephant
need help with this
which substance is a reactant in photosynthesis
Answer:
carbon dioxide and water
Explanation:
Carbon dioxide and water are reactants to photosynthesis.
Oil is widely used because it...
Answer:
Oil and gas are used widely in modern life. Oil fuels the cars, trucks and planes that underpin modern economies and lifestyles. Nearly all pesticides and many fertilisers are made from oil or oil byproducts. Gas provides electricity and is also used for cooking, heating houses and buildings, and heating water.
Answer: because it is cheap, easily transported, has a high net energy, AND low cost
Carbon is stored in
A.Trees and other living things
B.Oceans
C.Underground in soil and fossil fuels
D.All are correct
Answer:
all are correct
Explanation:
Carbon is also found in the atmosphere where it's a part of carbon dioxide gas emitted when fossil fuels are burned and when living organisms breathe. It's in organic matter in the soil, and it's in rocks. But far and away the most carbon on Earth is stored in a surprising place: the ocean.
Explain in detail the life cycle of the metamorphosis of amphibians.
Amphibians, like frogs and newts, have a slightly more complicated life cycle. They undergo a metamorphosis (a big change): they are born (either alive from their mother or hatched from eggs)
Joey eats strawberries for lunch. Explain how homeostasis is maintained in the endocrine systems once the fruit has entered Joey’s body.
Answer:
Explanations:
Homeostasis can be defined as the phenomenon whereby there is balance or stability within the internal and external environment of a cell or the body. The internal environment of the organism is kept constant during homeostasis. During this process there is adjustments in the
internal environment Because there is always change in the conditions inside and outside the cell. When the system of the body is able to adjust itself it's reffered to as homeostatic regulation.
The endocrine system which contains glands that is responsible for the secretion of hormones into the bloodstream play also vital part during Homeostasis, This is because hormones which are the chemical messaged effect some change cells in another part of the body. The endocrine system is responsible for the regulations of
metabolism as well as the development of some body cells and systems via feedback mechanisms, hormones such as
Thyrotropin-Releasing Hormone during Homeostasis. Therefore as Joey eats strawberries for lunch the hormones makes adjustment of muscle metabolism and also regulate fluid and ion concentration in the system or body
What are the sources of coastal pollution?
Answer:
Point sources include combined sewer overflows, concentrated animal feeding operations, sanitary sewer overflows, storm water, oil spills, industrial discharges; discharge from boats, and dumping of ballast water from ships.
Explanation:
Draw a cladogram that best represents the possible evolutionary relationship between species A, B, and C
And three animals that could match this phylogenetic tree.
Answer:
Monotremes, marsupials, and placentals are the three animals that could match this phylogenetic tree.
Explanation:
Monotremes, marsupials, and placentals belong from a common ancestor. Those organisms which have one common ancestor are also called monophyletic. These animals have some changes which occurs with the passage of time but most of characters are similar to each other. In placentals animals placenta is present while in Monotremes and marsupials this placenta is absent.
Which best explains why earthquakes sometimes occur in the same locations as mid-ocean ridges and rift valleys
Answer:
The reason why earthquakes sometimes occur in the same locations as mid-ocean ridges and rift valleys securely is:
Active tectonic plate edges are found at these locations.Explanation:
Earthquakes are caused by the release of energy that occurs regularly at the edges of tectonic plates, which with their movement allow the release of said energy, which later translates into an earthquake. In simpler words, imagine that tectonic plates are pieces of a domino together next to each other trying not to leave space, each union between one piece and another is a possible focus of energy release if these pieces move, and if that happened, whatever was on them would feel an earthquake or tremor.
There are places that are much more prone to earthquakes than others, for example, San Andreas Fault, which is heard a lot by the great earthquake it could cause in California.
Answer:
Faults form because crust gets cracked when plates move apart along divergent plate boundaries.
Explanation:
Just took the quiz and got it right. Believe me on this.
Question 6 (1 point) ✓ Saved
Having 1 leader CAN help to get through a task and reduce arguing
True
False
