Answer:
100 individuals will have attached earlobes out of a population of 10000
Explanation:
From the Hardy-Weinberg equilibrium; p² + 2pq + q². Also, p + q = 1
p² = population of individuals breeding true for free earlobes
2pq = population of individuals heterozygous for free earlobes
q² = population of individuals breeding true for attached earlobes
p = frequency of dominant allele
q = frequency of recessive allele
The dominant trait is free earlobes while the recessive trait is attached earlobes.
Eight out of ten are breed-true for free earlobes, whereas, two were heterozygous for that trait.
p² = 8/10 = 0.8
p = 0.89 or approximately 0.9
q = 1 - p
q = 1 - 0.9
q = 0.1
q² = (0.1)²
q² = 0.01
For a population of 10000 persons, number of people with attached earlobes will be:
0.01 * 10000 = 100 persons
Therefore, 100 individuals will have attached earlobes out of a population of 10000
If a persons heart rate is not being controlled correctly by the brain which part of the brain isnt working correctly
Answer:
The medulla of our brain is the control center of our heart rate. It either slows or speeds the heart beats per minute.
Explanation:
A disaster wipes out 50 percent of a small population of birds. Prior to the disaster, about half the birds had a green wing patch and half had a blue wing patch. Several generations after the disaster, only 10 percent have a blue wing patch, and 90 percent have a green wing patch. What do you infer happened, and why?
Answer:
The correct answer is - genetic drift takes place due to disaster in favor of a green wing patch.
Explanation:
In this given scenario there is disaster happened that wiped out 50% of a population of birds in which half had green wings and the rest half had blue wing birds before the catastrophe.
Due to this sudden catastrophe, the genetic drift occurred and also reduced the population to half and the ratio of both types of birds changed and favored the green wings as they are better adapted for the new conditions.
how can people increase freshwater supplies?
Answer:
Educate to change consumption and lifestyles.
Invent new water conservation technologies.
Recycle wastewater.
Improve irrigation and agricultural practices.
Appropriately price water.
Develop energy- efficient desalination plants.
Improve water catchment and harvesting.
Explanation:
Wildfires can be beneficial because they allow ecosystems to______.
If a ∥ b and b ⊥ y, then _____
a ⊥ y.
a ∥ y.
x ∥ y.
x ⊥ a.
Answer:
a _|_ y. is the correct answer.
Help! Due in 20 mins! I don't understand this. Brainliest, 20 points, 5 star, and thanks for a good answer! Thanks.
Answer: first one muscular, 2 exoskeleton
Explanation:
What evidence did Wallace claim shows
that new species are modified forms of
old species?
Answer:
Read Below
Explanation:
Wallace is often referred to as the father of modern biogeography. 6. The finger bones inside manatee and whale flippers are evidence that these living species are modified forms of older species.
The diagram shows a hypothetical model of the relationships between groups of organisms. Ciliates are a group of protozoans that contain short hair-like extensions. According to the placement of the group labeled Ciliates, which statement(s) below are accurate? You may select more than one answer. A) Ciliates evolved from flagellates. B) Ciliates ate the only species that contain cilia. C) Ciliates and fungi diverged more recently than ciliates and flagellates. D) Ciliates are more closely related to animals than they are to flagellates. E) Slime molds and ciliates have more common features than slime molds and fungi.
Answer:
C and D
Explanation:
That's what USA Test Prep said
Ciliates and fungi diverged more recently than ciliates and flagellates and Ciliates are more closely related to animals than they are to flagellates shows hypothetical model of the relationships between groups of organisms.
What is hypothetical model?Hypothetical modeling involves the design and analysis of basic hypothetical systems to represent complicated social phenomena for the purpose of understanding those social phenomena.
Hypothetical modeling is contrasted with both computer simulation and lab experiments to emphasize its key characteristics.
In analogy with laboratory experiments, hypothetical models can be viewed of as scientific representations that aim to isolate, hypothetically, the working of causal mechanisms or capacities from disrupting influences.
Ciliates and fungi diverged more recently than ciliates and flagellates and Ciliates are more closely related to animals than they are to flagellates shows hypothetical model of the relationships between groups of organisms.
To learn more about hypothetical model, refer to the link:
https://brainly.com/question/9507504
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What is cancer? (please make sure to include mitosis and cell division)
Answer:
Cancer is a disease in which abnormal cells divide uncontrollably and destroy the body tissue. // Putting it into simple words, It’s an error caused in meiosis and cell division.WELL here's what it does to your body... (please read all of it...thank u)
Let's start with what is cancer? Cancer is an uncontrolled growth of abnormal cells in the body. Cancer is caused by a mutation in DNA cells. The DNA inside a cell is packed into a large number of individual genes. Those genes in the cell, each contains a set of instructions telling the cells what types of functions to perform as well as how to grow and divide into more cells. Kind of like a little increased cell factory like system. Errors in the 'instructions' can cause the cell to stop its normal work and functionality and allow a cell to become cancerous.
Soo... gene mutations can instruct healthy cells to allow and naturalize excessive growth or rapid growth in cells to divide. So then all the new cells are infected and mutated. It can also fail to stop unhealthy rapid growth. Basically, cancer cells lose control in the factory and basically keep on spreading and growing an unhealthy amount till it gets deadly. Just kidding but basically thats what it means. AND gene mutations also make "mistakes" when they try to fix DNA errors. Which then are lead to turn into cancerous cells.
Now, what causes gene mutation? Gene mutation can be caused by one of many reasons. Two of the main reasons is being born fresh out your mommas womb. You could be born with a genetic gene mutation you most likely inherited from your parents. OR it could be caused by the enviroment you live in. Causes such as smoking, radiation, obesity, harmones, etc. and a lack of exercise. However, cells contain a mechanism that recognizes when a mistake occurs and repairs the mistake. But occasionally, a mistake is missed... which therefore results in a cell becoming cancerous.
MEANING:
Cancer is bad for your body. periodt.
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Hope you learned something!!!
GL :)
Which statement accurately describes radioactive dating?
Answer:
where is the statement (i will just give you some info coz i dont know what to answer <3)
Explanation:
We have rocks from the Moon (brought back), meteorites, and rocks that we know came from Mars. We can then use radioactive age dating in order to date the ages of the surfaces (when the rocks first formed, i.e. when the lava cooled and crystallized). We also have meteorites from asteroids and can date them, too.
A particular gene has two alleles, a dominant allele A and a recessive allele a. The frequency of allele A is 0.55 . If the population is in Hardy-Weinberg equilibrium with respect to the gene, then what is the expected frequency of genotype Aa?
Answer:
0.495
Explanation:
because i did the question
Would this make sense? A dogs eye color was brown which his allele coded for.
Answer:
yes but make sure u put it as "his allele is coded for" since youre talking about genes and traits
Explanation:
sh
The plecostomus is popular among aquarium owners
for its ability to remove algae. It uses its strong jaw
muscles to suck food off rocks and other surfaces, like
the glass of a fish tank. The swim bladder allows the
plecostomus to stay easily wherever there is food,
often near the bottom of the tank. The plecostomus has
large scales and a hard skeleton.
To which group of fish does the plecostomus belong?
Answer:
Bony Fish
Explanation:
i got it right on my test!
Answer:
Bony fish
Explanation:
I got it right on edge
A mutation that occurs in the gametes of an organism will most likely be transferred to which of the following.A.The siblings of the organisms
B.the offspring of the organisms
C.the other organisms living near by
D.the mating partner of the organisms
Answer:
A
Explanation:
pls mark me brainliest right
HELP!!!! BIOLOGY!!!! 50 POINTS!!!!
A species of frog slowly dies off when its main food source migrates to another area. Migrating toads and lizards begin to expand to the region. This is an example of (3 points)
remaining species living longer due to increased food supply
surviving populations reaching a state of equilibrium due to decreased competition
surviving species exploiting a newly available niche
organisms evolving more slowly as they recover from the loss of diversity
I think is C
Answer:
C
Explanation:
C states that the surviving species exploite a newly available niche. When an animal migrates is trying to find food or more livable conditions. C is true because migrating usually occurs when animals want to find other new places to fit their circumstances or living conditions.
This is an example that states how the surviving species exploit a newly available niche (Option C).
What is a species niche?In biology, the term niche refers to the match between the features of a given species and particular environmental conditions.
The species niche is also used to describe the ecological role of a given species in an ecosystem.A species niche includes both biotic factors (e.g. competition relationships) and abiotic factors (e.g. temperature tolerance).In conclusion, this is an example that states how the surviving species exploit a newly available niche (Option C).
Learn more in:
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Compare the sizes of all four DNA nucleotides. Which bases are bigger?
b) Assume that Ay is a dominant allele that codes for purple leaves and A2 is a recessive allele that
codes for white leaves. What will be the frequencies of purple and white phenotypes in this population?
Answer:
All plants of purple colour.
Explanation:
All the offspring plants of F1 generation have purple leaves because Ay is dominant allele which appear in the leaf colour instead of A2 which is a recessive allele. In the F1 generation, the dominant allele must appear in the shape and structure of the offspring whereas the recessive allele does not appear so offspring of purple leaves appear if plants have purple leaves cross with white leaves.
what area of mental health are promoted whan participating in individual sports?
Answer:
Many of the elements of mental health are needed for everyday life. One aspect is having poise under pressure. It is also important to be able to deal with adversity and experience new situations. Lastly, sports help participants build their self-esteem.
The process that starts with dna and ends with 2 dna is called
Answer:
Vague, but I think you are talking about duplication or mitosis
Explanation:
Mitosis is duplicating DNA to make two geneticly identical daugher cells
Duplications is just unwinding the DNA to make a second copy
Where do Germline mutations occur?
O Gametes
O Cells of body other than gametes
O Both A and B
O None of the above
Answer:
A germline mutation occurs in a sperm cell or an egg cell and is passed directly from a parent to a child at the time of conception.
Explanation:
Answer:
c
Explanation:
How can one wrong base pair impact a whole organism?
Answer:
An organism's DNA affects how it looks, how it behaves, and its physiology. So a change in an organism's DNA can cause changes in all aspects of its life. Mutations are essential to evolution; they are the raw material of genetic variation. Without modification, growth could not occur. i hope this help
Explanation:
pls answer in the next couple of minutes
Joshua is studying about environmental impacts. He has learned about companies polluting the groundwater in most nations. Which example would be categorized as the main source for groundwater?
Answer:
Groundwater
Although this may seem surprising, water beneath the ground is commonplace. Usually groundwater travels slowly and silently beneath the surface, but in some locations it bubbles to the surface at springs. The products of erosion and deposition by groundwater were described in the Erosion and Deposition chapter.
Groundwater is the largest reservoir of liquid fresh water on Earth and is found in aquifers, porous rock and sediment with water in between. Water is attracted to the soil particles and capillary action, which describes how water moves through a porous media, moves water from wet soil to dry areas.
Aquifers are found at different depths. Some are just below the surface and some are found much deeper below the land surface. A region may have more than one aquifer beneath it and even most deserts are above aquifers. The source region for an aquifer beneath a desert is likely to be far from where the aquifer is located; for example, it may be in a mountain area.
The amount of water that is available to enter groundwater in a region is influenced by the local climate, the slope of the land, the type of rock found at the surface, the vegetation cover, land use in the area, and water retention, which is the amount of water that remains in the ground. More water goes into the ground where there is a lot of rain, flat land, porous rock, exposed soil, and where water is not already filling the soil and rock.
The residence time of water in a groundwater aquifer can be from minutes to thousands of years. Groundwater is often called “fossil water” because it has remained in the ground for so long, often since the end of the ice ages.
Explanation:
Global warming could happen without the greenhouse effect
True or False
Answer:
false
Explanation:
please mark brainliest
would a trait that has only two distinct phenotypes more likely be a single-gene trait or a polygenetic trait? How do you know? plz, hurry! will give brainiest
Which would be negatively affected by an increase
in the beetle population?
A. frog
B. grass
C. robin
D. snake
Answer:
Grass, Option B
Explanation:
If the beetle population increased then they would be eating more grass, which would negatively impact the ecosystem because you need everything stabilized in the environment.
Answer:
B. grass
Hope it helps
Please mark me as the brainliest
Thank you
GIVING BRAINLIEST AND THE REST OF MY POINTS!!!!!!!!
Which piece of observation would support your explanation that the chameleon use a physical characteristic adaptation to survive in its environment?
A) A change in skin color
B) An increase in number of eggs
C) Carrying eggs in their mouth
D) Living in large groups
Answer:
A
Explanation:
it changes colors to its enviorment
to hide away from predators
and be invisible for prey
mark b r a i n l i e s t
if u would be so k i n d
4. Which material dissolves
most substances in chemical
weathering?
Answer:
Water is important in chemical weathering because most substances dissolve in water.
The process of dissolving breaks up the minerals in the rock into small pieces. The small pieces mix with water to form.
Acids are also agents of chemical weathering and cause more chemical weathering than pure water does.
Answer:
Water
Explanation:
Just because.
Actually, most substances dissolve in water, and it dissolves more substances than any other liquid.
.
Explain how errors in DNA replication and environmental factors cause genétic variation
DNA replication is a truly amazing biological phenomenon. Consider the countless number of times that your cells divide to make you who you are—not just during development, but even now, as a fully mature adult. Then consider that every time a human cell divides and its DNA replicates, it has to copy and transmit the same sequence of 3 billion nucleotides to its daughter cells. Finally, consider the fact that in life (literally), nothing is perfect. While most DNA replicates with fairly high fidelity, mistakes do happen, with polymerase enzymes sometimes inserting the wrong nucleotide or too many or too few nucleotides into a sequence. Fortunately, most of these mistakes are fixed through various DNA repair processes. Repair enzymes recognize structural imperfections between improperly paired nucleotides, cutting out the wrong ones and putting the right ones in their place. But some replication errors make it past these mechanisms, thus becoming permanent mutations. These altered nucleotide sequences can then be passed down from one cellular generation to the next, and if they occur in cells that give rise to gametes, they can even be transmitted to subsequent organismal generations. Moreover, when the genes for the DNA repair enzymes themselves become mutated, mistakes begin accumulating at a much higher rate. In eukaryotes, such mutations can lead to cancer.
1. Үйсін обалары қайда орналасқан?
2. Әр кезеңдегі қорымдардың қандай ерекшелігі бар?
3. Үйсіндердің қоныстары қандай болды?
4. Үйсіндердің еңбек құралдарын атаңдар.
Answer:
2
Explanation:
I can't really understand what it is but my best guess would be too
According to this diagram, which line color denotes the universal common ancestor for all 3 domains of life?
A. Blue
B. Red
C. Tan
D. Black