Ralph wanted to breed a pea plant that produced only purple flowers. He continued to breed purple-flower producing pea plants together over six generations. The results of Ralph's selective breeding are shown above. What did the selective breeding do to the population of pea plants?
A.
increased its genetic diversity
B.
decreased its genetic diversity
C.
caused a new species of pea plant to form
D.
caused a pea plant to exhibit a new characteristic
Answers
Answer:
B. decreased its genetic diversity
Explanation:
if the number of chances the white flower decreases, and there are more purple chances, then there is less genetic diversity.
Answer:
It's B
Explanation:
Related Questions
Some organisms seem to have undergone very little evolutionary change
over huge spans of geologic time. One example is the shark. Shark
ancestry dates back around 425 million years, which is about 200 million
years before the earliest known dinosaur. In all, abut 2000 to 3000
species of fossil sharks have been documented. About 1100 species of
shark remain on Earth today. These sharks represent an ancient life form.
Why do you think the rate of evolution of the shark has been so gradual?
4 sentence
Are the finches that Charles Darwin studied on the Galápagos Islands an example of divergent evolution or convergent evolution? Give two point to explain your thinking.
Answers
Answer:
shark are slow evolving species because of lower gene flow and rate if reproduction.
Darwin finches undergo divergent evolution
Explanation:
Sharks have evolved slowly because of following reasons –
a) Lower rate of reproduction
b) Restricted gene flow because of isolated habitat such as stretches of deep water
c) Staying close to the eggs and hence guarding them throughout their life thereby allowing no cross mating.
d) Lower rate of mitochondrial DNA (mtDNA) evolution
Darwin’s finches show divergent evolution as different species of finches originated from a common ancestors. The beak size of finches vary form one species to other because of different diet habits
Explain why a swing will not stay in motion forever after you have given it a push. What happens to the mechanical energy of the swing?
Answers
Explanation:
As the pendulum swings back and forth, the balance between the two types of energy changes constantly. At some points in its swing, the pendulum has more kinetic energy. At other points, it has more potential energy. ... No pendulum can swing forever because the system loses energy on account of friction.
The 3 letters we use to describe the type of energy in cellular respiration are _____
Answers
Answer:
ATP I believe
Which statement about the pancreas is not true?
O A. It uses a feedback loop to control glucose.
B. It makes digestive enzymes for the small intestine.
O c. It makes hormones that are released on the skin,
O D. It releases glucegon and insulin into the blood.
Answers
the hormones are released in the blood
We interviewed 3 students about what they thought were the reasons for the change in Guppy population and this is what they said:
● Norise says the change in the guppy population was caused by a mutation.
● Lauren says the change was caused by a change in the environment.
● Megan thinks both Norise and Lauren are correct.
Who do you think is right? Explain what happened to the guppies over many generations.
Use multiple pieces of evidence of the notes in your answer to receive full credit.
Answer:
Answers
Answer:
Megan is right.
Explanation:
The guppy is a very adaptable freshwater fish, commonly found in aquariums world wide. The success of the guppy is mostly due to its ability to adapt to the changes in its environment. Guppies were originally found in the southern american continents and the Caribbean island, but has been exported all over the world, first as a means of curbing the spread of mosquitoes by feeding on the larvae and then as a pet. Over time, guppies have found themselves in diverse environment, and some have undergone mutation of body parts just to adapt. So, the need for adaptation to their constantly changing environment has led to mutation in the guppies.
Compare the environmental and societal impact of urban sprawl to upward growth
Answers
Answer:
Urban sprawl can also be called Urbanization and it means the movement of a population from the densely populated cities to the low populated areas around the cities which isn't usually well developed.
Urbanisation has a great impact on the environment because it leads to cutting down of trees which is also known as deforestation.
Deforestation is very harmful for the environment because it creates a form
of dis balance in the environment. Trees are very important to us humans because they provide us with raw materials and oxygen. This means we should always be mindful of deforestation processes.
True or false
Shorter strands of DNA travel more easily and over time, farther on the agarose gel than larger strands
Answers
Answer:
true
Explanation:
DNA is negatively charged, therefore, when an electric current is applied to the gel, DNA will migrate towards the positively charged electrode. Shorter strands of DNA move more quickly through the gel than longer strands resulting in the fragments being arranged in order of size
hope this helps
Changes in wind strength during an El Niño affect surface currents, which affects weather patterns. In 3-5 sentences, explain why this is the case.
Answers
El Niño is a climate pattern that describes the unusual warming of surface waters in the eastern tropical Pacific Ocean. El Nino is the “warm phase” of a larger phenomenon called the El Nino-Southern Oscillation (ENSO). La Nina, the “cool phase” of ENSO, is a pattern that describes the unusual cooling of the region’s surface waters. El Niño and La Niña are considered the ocean part of ENSO, while the Southern Oscillation is its atmospheric changes.
This is a photo of a wolf-dog. This animal is the offspring of a gray wolf and a domesticated dog, the German shepherd. The wolf-dog you see here can breed and have pups. What conclusion can you make about the wolf and the German shepherd?
A) They are in the same classification domain.
B) The two animals are members of the same species.
C) The wolf and the dog must have similar reproductive cycles,
D) The wolf and the dog are closely related because they are both mammals.
Answers
Answer:
B)
Explanation:
their DNA are similar
they are able to reproduce
they are of same species
Answer: b!!
Explanation:
Which is the best definition of activation energy
Answers
Answer:
the energy required to break the bonds of reactant molecules
That is the best answer.
Use week 17 vocabulary
part of Earth in which life exists including land, water, and air or atmosphere
A)
ecosystem
B)
community
C)
biosphere
D
population
Answers
Answer:
C
Explanation:
How do the genes in E. coli save energy?
Genes are turned on periodically.
Genes are never turned on.
Genes are turned on only when needed.
Genes are turned on all of the time.
I will give brainiest to whoever answers RIGHT NOW
Answers
Answer:
its C i took the test
Which of the following is not a property of an acid?
A.sour taste
B.soluble in water
C.react with a base to form salt and water
D.helps in digestion
Answers
Explanation: Gastric juice in the stomach contains HCL which creates an acidic condition(pH1.5-2.0) which is optimal for the action of enzymes in the stomach. HCL stops the activity of salivary amylase & helps to kill bacteria in food. It doesn’t help in digestion cuz it is not an enzyme.
Drag each option to the correct location on the image.
Classify the goods as public or private property.
sewer systems
mines
radio broadcasts
manufactured goods
Answers
Answer:
PUBLIC: radio broadcast , manufactured goods
PRIVATE: sewer system , mines
How can you make it safer to exercise on a hot day?
A. Do not exercise between 11 a.m. and 5 p.m., the hottest hours of
the day.
B. Wear loose-fitting clothes that allow sweat to evaporate.
C. Drink water before, during, and after a workout. Drink water at
least every 20 minutes while exercising.
D. All of the above.
Answers
We can make it safer to exercise on a hot day by Option(D) All of the above.
What happens to our body if we exercise on a hot day ?Exercising in hot weather puts extra stress and pressure on our body. If we don't take care when exercising in the heat, we risk serious illness. Both the exercise itself and the air temperature and humidity can increase your core body temperature. To help cool itself, your body sends more blood to circulate through your skin. If the core body temperature is high for a prolonged time, the person may loose consciousness and even suffer from cardiac arrest.
How to make it safer to exercise on a hot day ?First of all, we should not exercise between 11 a.m. and 5 p.m. as it as the hottest hours of the day and the person may have heat stroke. Even if we exercise, after avoiding the timing of the day, we should wear loose-fitting clothes that allow sweat to evaporate. Finally, the most important point is to drink water before, during, and after a workout. Drink water at least every 20 minutes while exercising.
Thus Option(D) All of the above satisfies our exercise on a hot day.
To learn more about how to make it safer to exercise on a hot day, refer -
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How many Earth years would you need to live in order to be two on Neptune?
Answers
Answer:
164.81 earth years
Explanation:
I looked it up
The picture shows a jar of honey.
Which statement is correct about this food?
Answers
Answer:
Can u pls show the statements
When performing a tourne or 'turned' potato cut, how many sides are
ideal?
Four
Six
C
Seven
D
Five
Answers
Answer:
A traditional tournee cut has seven sides, meaning you should make seven cuts in each direction
Explanation:
Drag each tile to the correct box. Match each field of study to the correct piece of evidence.
1. molecular biology
2. comparative anatomy
3. developmental biology
embryo of a pig and a calf. _________
DNA of a pig and a calf. _________
limb structure of a pig and a calf _________
Answers
DNA of a pig and a calf —> molecular biology
limb structure of a pig and a calf —> comparative anatomy
The matches include embryo >> developmental biology; DNA >> molecular biology; limb structure >> comparative anatomy.
What is molecular biology?Molecular biology is a discipline aimed at analyzing biological properties of biomolecules (e.g., DNA, lipids, proteins, etc).
Developmental biology is a sub-field of biological sciences aimed at deciphering developmental patterns of life (organisms).
Comparative anatomy makes reference to the science that studies structure-function relationships by comparing body parts.
In conclusion, the matches include embryo >> developmental biology; DNA >> molecular biology; limb structure >> comparative anatomy.
Learn more about molecular biology here:
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The body breaks down food into nutrient molecules during _____. digestion absorption salivation peristalsis
Answers
Answer:
The answer is Digestion.
Explanation:
During digestion, enzymes in our body are used to break down large food molecules into smaller molecules for a better absorption. For example, amylase break down carbohydrate, protease break down protein and lipase break down fat.
What can be done to conserve earths coal supply for future generations?
Answers
Answer:
a
Explanation:
if you invest in alternative then you save more and more coal
Because grasslands are less diverse than tropical forests and have deep root systems, after a fire they tend to exhibit
and
a. high inertia; low resilience
b. low inertia; high resilience
c. no inertia; low resilience
d. high inertia; high resilience
e. low inertia; no resilience
Check My Work
Answers
Answer:
a
Explanation:
high inertia low resilience
Which of the following terms describes how often an allele is found in a
population?
O A. Allele frequency
B. Allele density
C. Allele strength
O D. Allele dominance
SIIRMIT
Asap please
Answers
Answer:
A. Allele frequency
Explanation:
Allele frequency is the fraction or percentage of a specific allele in the total number of alleles in a population.
The breakdown of pollutants, water
purification and soil formation are valuable
services provided by:
A hellstle sources
C.ecosystems
B. positive feedback loops
D. negative feedback
A
HELP ASAP
Answers
Answer:
C.
Explanation:
Ecosystems like wetlands can break down pollutants and purify water. Soil formation is caused by primary succession in ecosystems. Never heard of hellstle sources so sorry if I got this wrong.
a.
10. Which of the following is NOT a way to deal with hazardous waste?
Above ground storage
b. Biological Treatment
C. Incineration
d. Export
Answers
Answer:
I might be wrong with this, but from my research it says Export doesn’t help deal with hazardous waste.
Answer:
Export
Explanation:
Competitive exclusion controls population size.
Please select the best answer from the choices provided
True or False
Answers
Answer:
Probably Frue
Explanation:
Thats what the explanation is
how does the bone matrix differ from the matrix of cartilage
Answers
Answer:
Cartilage and Bone are specialized forms of connective tissue. They are both made up of cells embedded in an extracellular matrix. Cartilage is thin, avascular, flexible and resistant to compressive forces. Bone is highly vascularize, and its calcified matrix makes it very strong.
Hope this helped!
Complete the sentence using one of the
following words: reproduction, adaptation, or
homeostasis.
A(n)...........may include a structural,
physiological, or behavioral trait that improves
an organism's likelihood of survival and
reproduction
Answers
hope this helps :)
(if you wouldn’t mind can you mark me brainliest?) :)
Which of the following are accessory organs within the digestive system? (please select ALL that apply) *
Stomach
Large Intestine
Liver
Pancreas
Rectum
Answers
all of them are the part of digestive system
Liver and pancreas are the accessory organs within the digestive system.Thus, the correct options are liver and pancreas.
The human digestive system is made up of the gastrointestinal tract and the accessory organs which are needed for digestion . Digestion involves the breakdown of food into smaller parts, until they the food is absorbed and assimilated into the body. The process of digestion takes place in three stages: the cephalic phase, the gastric phase, and the intestinal phase.
The primary organs of the digestive system include organs like stomach,large intestine and rectum.Thus, the accessory organs within the digestive system are liver and pancreas.
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Which way does the sun’s gravity act on any body in orbit?
A. pulls it forward in its orbit
B. pulls it backward in its orbit
C. pulls it toward the sun
Answers
Answer:
pulls it toward the sun