Kettlewell's experiment is included in most biology texts as an example of evolution occuring. How do we know that the moths evolved?
(peppered moths)
Answers
Answer:
The environment the moths lived in used to be unpolluted. This made dark moths rare. As the area where light moths were found became more polluted, the light moths became less common in the polluted/dark areas. Light Moths began to evolve after not being able to survive in dark forests, they began to get darker and blend in with the polluted area to be safe from predators.
Explanation:
The evolution of the moth is an evolutionary instance of directional color change in the moth population as a result of air pollution due to the industrial revolution.
During the nineteenth century in the United Kingdom, the dark (melanic) form of the peppered moth become the dominant form of the peppered moth. Before this change, there are very fewer numbers of dark moths were present and light-colored moths were common.
This change in frequency occurred due to Industrial Revolution as it increased air pollution and trees became darker.Due to this change, light-colored moths were visible to birds and this leads to increase predation of these moths.The darker form of the moth was less visible to predators.The color change was due to adaptive evolution mainly to a single gene, with the melanic allele being dominant to the non-melanic allele. At the end of the twentieth century, the atmosphere become clear once again in the United Kingdom.The new changes would lead to a decrease in the frequency of the melanic form.Thus, the evolution of moths was due to the adaptive selection type of natural selection.
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Related Questions
Which statement indicates one difference between the gene that codes for insulin and a gene that codes for testosterone in humans
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Answer:
hello your question lacks the required option below are the missing options
A) The gene for insulin is a sequence of five different molecular bases while the gene for testosterone is a sequence of only four different molecular bases.
B) The gene for insulin is replicated in vacuoles, while the gene for testosterone is replicated in mitochondria
C) The gene for insulin has a different sequence of molecular bases than the gene for testosterone.
D) The gene for insulin is turned ON in liver cells, but the gene for testosterone is not
answer : The gene for insulin has a different sequence of molecular bases than the gene for testosterone ( C )
Explanation:
The statement that indicates the difference between the gene that codes for insulin and a gene that codes for testosterone is ; The gene for insulin has a different sequence of molecular bases than the gene for testosterone.
Genetic codes are determined basically by the four types of nitrogen bases contained in the molecules of the DNA ,
I need help with this one.
Answers
Answer:
Here is ya answer C: Cells
Explanation:
Explain why males can be carriers for an autosomal disorders but not for an x-lined disorder.
Answers
Answer:
In order to be a carrier, the male must be a carrier of the allele without expressing it phenotypically. This can only happen when the inheritance is autosomal because he has a pair of autosomic chromosomes meanwhile he only has one X chromosome. So when the inheritance is X-linked, the allele of the X chromosome will always be phenotypically expressed
Which of the following do not match?
Prokaryotic and Anaerobic OR Eukaryotic and Anaerobic0
Answers
The smallest living things we have around, thanks to this tool they were eventually found – What is it?
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The effects of isotonic, hypotonic, and hypertonic extracellular environments on plant and animal cells is the same. However, due to the cell walls of plants, the visible effects differ. Although some effects can be seen, the rigid cell wall can hide the magnitude of what is going on inside.
Answers
Answer:
Yes.
Explanation:
Yes, there is same effects of isotonic, hypotonic, and hypertonic extracellular environments on plant and animal cells because both cells are more similar to each other. If a plant or animal cell is placed in a hypertonic solution, water will go outside the cell, and the cell will shrink, in isotonic environment, there is no water movement inside or outside of the cell, so there is no change in the size of the cell, while on the other hand, if a cell is placed in a hypotonic environment, water will enter the cell, and the cell will turgor.
A virus is a prokaryote.
True or False?
Answers
Answer:
False
Explanation:
It's neither.
Which statement is not true about the main ingredient of the cell -- water?
a). Water surrounds the cell which helps insulate your body
b). Water makes up more than 75 percent of a cell
c). Water helps your body maintain a stable internal environment (homeostasis)
d). Water helps make salts
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Answer:
d. water helps make salt
Draw a Punnett square to represent the cross of two pea plants each hetrozygous for tallness(Tt). Use the Punnett square to identify the probability of an offspring that is short.
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Answer:
25% of the offspring will be short, tt.
Explanation:
Due to technical problems, you will find the complete explanation in the attached file
write two sources of each of Nitrogen Phosphorus and potassium required for the growth of plant
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Answer:
Do Nitrogen, Phosphorus, and Potassium Fertilizers Do for Plants? Nitrogen in Fertilizer. In simple terms, nitrogen promotes plant growth. It is associated with leafy, vegetative growth. Phosphorus in Fertilizer. Phosphorus is involved in the metabolic processes responsible for transferring Each of these fundamental nutrients plays a key role in plant nutrition. Nitrogen is considered to be the most important nutrient, and plants absorb more nitrogen than any other element. Nitrogen is essential to in making sure plants are healthy as they develop and nutritious to eat after they’re harvested. Soil is a major source of nutrients needed by plants for growth. The three main nutrients are nitrogen (N), phosphorus (P) and potassium (K). Together they make up the trio known as NPK. Other important nutrients are calcium, magnesium and sulfur.
Explanation: hope im right
Minerals like feldspar and mica are the main suppliers of potassium in soil. The earth provides phosphorus to plants. Usually in the form of synthetic fertilizer or livestock dung, farmers apply phosphorus to soil. The primary source of nitrogen in atmospheric deposition is the combustion of fossil fuels like coal and oil.
What is fertilizer?Fertilizer, a natural or synthetic substance with chemical components that enhance plant growth and productivity.
The primary sources of potassium in soil are minerals like feldspar and mica. Plants receive phosphorus from the ground.
Farmers add phosphorus to soil, typically in the form of synthetic fertilizer or livestock manure. The burning of fossil fuels like coal and oil is the main cause of nitrogen in the atmosphere.
Plants can take up nitrogen from the soil as [tex]NH^4^+[/tex] and [tex]NO_3[/tex] ions, but most of it is taken up as nitrate due to how common nitrification is in agricultural soils. As plant roots take up water, nitrate readily travels in their direction.
Thus, these are the sources of each of Nitrogen Phosphorus and potassium required for the growth of plant.
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DaBaby carefully cuts a think slice of an acorn and observes it under a
microscope. He sees that the acorn is actually made up of a great number
of tiny "rooms". What characteristic of living things has DaBaby observed?
Answers
PLSSS HELPPPP I WILLL GIVE YOU BRAINLIEST!!!!!! PLSSS HELPPPP I WILLL GIVE YOU BRAINLIEST!!!!!! PLSSS HELPPPP I WILLL GIVE YOU BRAINLIEST!!!!!! PLSSS HELPPPP I WILLL GIVE YOU BRAINLIEST!!!!!!PLSSS HELPPPP I WILLL GIVE YOU BRAINLIEST!!!!!! PLSSS HELPPPP I WILLL GIVE YOU BRAINLIEST!!!!!! PLSSS HELPPPP I WILLL GIVE YOU BRAINLIEST!!!!!!
Answers
Answer:
I think its b but I'm not sure
don't hate me if I'm wrong
PLSSS HELPPPP I WILLL GIVE YOU BRAINLIEST!!!!!! PLSSS HELPPPP I WILLL GIVE YOU BRAINLIEST!!!!!! PLSSS HELPPPP I WILLL GIVE YOU BRAINLIEST!!!!!! PLSSS HELPPPP I WILLL GIVE YOU BRAINLIEST!!!!!!PLSSS HELPPPP I WILLL GIVE YOU BRAINLIEST!!!!!! PLSSS HELPPPP I WILLL GIVE YOU BRAINLIEST!!!!!! PLSSS HELPPPP I WILLL GIVE YOU BRAINLIEST!!!!!!
Answers
Answer: earthquake
Explanation: earthquakes shake and have these techtonic plates. this causes the ground to break.
If an organism has a hapoloid chromosome of 8 which of the following is the organism diploid chromosomes and why
Answers
Answer:
if I remember right, a diploid is twice the amount of a haploid because diplood are pair chromosomes. So if there is 8 haploid there will be 16 diploid.
Explanation:
To find the diploid put the n of 2n.
what happen when blood sugar level is low in human body?
Answers
Answer:
it can cause signs of stress, such as nervousness, anxiety, and irritability.
Explanation:
One of the differences between embryonic stem cells and adult stem cells is ?
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Answer:
One major difference between adult and embryonic stem cells is their different abilities in the number and type of differentiated cell types they can become. Embryonic stem cells can become all cell types of the body because they are pluripotent.
The early ___ believed that the universe was large rectangular box
A)Chinese
B)Asians
C)Egyptians
Answers
Answer:
the Egyptians believed that god was the holder of the universe and the Chinese believed something very similar so your best answer is asian
Explanation:
“The Egyptians ,for example believed the universe to be like a long rectangular box”
If many eruptions over a vent have made a short cinder cone, the magma that help build this volcano contained A a lot of water vapour and silica B a lot of silica and only a little water vapour IC с. a little silica and lot of water vapour D. a little silica and a little water vapour
Answers
Answer: a little silica and a little water vapor
This is where the genetic information is found in a eukaryotic cell?
Answers
Answer:
nucleus
Explanation:
Holds about everything
Answer:
The genetic information in a eukaryotic cell can be found in the nucleus.
Explanation:
Hope this helps!
state the shape of the bacterium used in the investigation of preventing bacterial growth
Answers
Answer:
Bacterial cells come in different shapes: from rods, to spheres, to spirals
Explanation:
a _____ mutation in which just one base of DNA is changed is called a(n)
mutation
O translocation
O point
O chromosomal
O inversion
Answers
Answer:
a point mutation
Explanation:
A point mutation or substitution is a genetic mutation where a single nucleotide base is changed, inserted or deleted from a DNA or RNA sequence of an organism's genome.
A healthy individual is a carrier of a lethal allele but is unaffected by it. What is the genotype of this individual?
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one of the seed banks has been storing seeds of a rare and endangered plant to keep the seeds fresh.120 of the seeds of this plant were selected to be grown out of this 120 seeds only 90 germinated
what percentage of the seeds was not fertile?show all your working
Answers
Answer:
25%
Explanation:
According to this question, a seek stored seeds of a rare and endangered plant. In order to ensure that the seeds remain fresh, 120 seeds are selected to be grown. However, out of these 120 seeds, only 90 germinated. This means that only 90 of 120 seeds are fertile.
This further means that (120-90) = 30 seeds are infertile and hence, could not germinate. In percentage, this can be represented as:
30/120 × 100
= 1/4 × 100
= 100/4
= 25% of the selected seeds are infertile.
Pls help me, this is science btw.
Answers
Answer:
(B) and (E)
Explanation:
It is not option (A) because it says that Lactobacillus is a kind of bacteria that harms you, not is good for you, and parasitic bacteria are harmful to you, so not (A).
Not (C) because it does not make any sense whatsoever.
Not (D) since that says that S. typhi has a mutualistic relationship, which is good for both organisms, which is not true in this case.
It is (B) because the harmful bacteria, S. typhi is a parasite to humans.
It is also (E) since that says that the Lactobacillus bacteria does share a good relationship with humans.
Explain why selective breeding of plants takes a long time (
Answers
Question 3
As compared to developing countries, developed countries have a
A higher average income, a higher rate of population growth, and produce more waste.
B.
lower average income, a higher rate of population growth, and produce less waste.
С
higher average income, a lower rate of population growth, and produce more waste.
D
lower average income, a lower rate of population growth, and produce less waste.
Answers
Answer:
A
Explanation:
A
what are Punnet squares and why are they important in genetics?
Answers
Answer:
Punnet squares are is used to predict the genotypes of a particular cross.They are important in genetics because they find the offspring of a genotype.
Explanation:
Answer:
The Punnett square is a square diagram that is used to predict the genotypes of a particular cross or breeding experiment. The diagram is used by biologists to determine the probability of an offspring having a particular genotype.
Explanation:
what is gene flow and how might it impact a wolf population
Answers
Answer:
Gene flow within a population can increase the genetic variation of the population, whereas gene flow between genetically distant populations can reduce the genetic difference between the populations.
Explanation:
Gene flow within the population increases the genetic variability in the wolf population variation can be seen.
What is gene flow?Gene migration is another name for gene movement. The movement of genetic material from one group to another is referred to as gene flow.
Through migration, gene flow can occur between two populations of the same species and is mediated via vertical gene transmission from parent to offspring and reproduction.
Any movement of people and the genetic material they carry from one community to another is referred to as gene flow, often known as migration.
Therefore the movement of genetic material from one population to another is known as gene flow.
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DNA _____________________ after transcription.
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Answer:
after Transcription DNA is copied into a new molecule of messenger RNA. DNA safely and stably stores genetic material in the nuclei of cells as a reference, or template.
Explanation: happy to help :)
________ exercise strengthens skeletal muscle, and ________ exercise strengthens skeletal and cardiac muscle.
a. resistance, aerobic
b.aerobic, aerobic
c. aerobic, resistance
d. resistance, resistance
Answers
Answer:
D ANSWER OK
Explanation:
BECAUSE IT IS THE RIGHT ANSWER