Answer:
The correct answer is -
A. genotype ration = 1/1 or 100% of Aa.
B. phenotype = all smooth-seeded.
Explanation:
According to the question, in this experiment, the smooth seed is the dominant trait over the wrinkled seed. The wrinkled seed is recessive, therefore, represented by aa and dominant is represented by AA
gametes: A and A from smooth seeded parent and a and a from the wrinkled-seeded parent.
Punnett square:
A A
a Aa Aa
a Aa Aa
In this cross of F1 generation, all the offsprings are Aa in genotype 4/4 or 1/1 or 100 percent chances.
And phenotypically 100% chances of the smooth seed plants.
How does biomagnification put a top predator at a disadvantage?*
Answer:
Food is much harder to find the farther up the food chain you go. Toxins and chemicals accumulate in the bodies of everything that was eaten by the food that you eat. Toxins and chemicals bind to the tissue of larger animals better than smaller ones.
Answer:
Explanation:
Toxins accumulate in the bodies of everything that was previously eaten.
The Texas blind salamander (Eurycea rathbunl) lives in the Edwards Aquifer region around San Marcos. Along with other species the salamander lives in total darkness in the underground crevices and caves of the aquifer region. The table lists some of the organisms that live in this environment and their food sources. Edwards Aquifer Cave Inhabitants Food Sources Texas blind salamander Blind shrimp Snails Amphipods Intestinal roundworm Blind shrimp, amphipods Protozoa, fungl, detritus Detritus Detritus. Texas blind salamander In an energy pyramid for these aquifer cave dwellers, which of the following would be placed at the bottom? A Snails C Protozoa B D Texas blind salamanders Blind shrimp
Answer:
The answer is Protozoa
Explanation:
If two populations of people share the same DNA "spelling difference" (i.E., mutation), what does this mean about these two populations?
Answer:
It could mean that those two populations could be common ancestors because the spelling differences are the same
Explanation:
The similar spelling variations between the two populations could imply that they share common ancestry.
What is DNA?Deoxyribonucleic acid, or DNA, is the name given to the genetic material carried by humans and nearly all other species. An individual's DNA is present in nearly all of their cells.
Nucleotides are the molecular building components that make up DNA. A phosphate group, a sugar group, and one of four different nitrogen bases make up these building components. Nucleotides are joined into chains and the locations of the phosphate and sugar groups are switched to form DNA strands.
Every cell in the body has DNA in its nucleus. Groups of these firmly bound fragments make form chromosomes. The majority of people possess 46 pairs of chromosomes, or 23 pairs per pair.
Thus, The similar spelling variations between the two populations.
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Select the correct answer.
Which of these is an example of selective breeding?
A.
A scientist places bacteria in a Petri dish treated with antibiotics and observes what happens to the population over time.
B.
A farmer plants tomato seeds that have been genetically modified to be pest resistant in his garden.
C.
A farmer only allows trees that produce tart apples to reproduce until he has a population that only produces tart apples.
D.
A scientist uses the genetic material from a unicellular organism to create an exact copy of that organism.
Answer:
the answer is C
Explanation:
Seletive breeding means only nuture one specific kind of species. In answer C, the farmer only allows trees produce tart apples to reproduce, so the answer is C.
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What process do animals go through in molecular energy is available?
it says it all sorry
ten effects of unsuitable work place environment to human health
In a watershed, why would the water be cleaner near the top where it just rained as oppose to the bottom where the water collected?
Answer:
Because the Pollution and oil from streets and dirt, etc... on land would be washed down to or brought to the low collection point of the watershed therefor the fresh rain would be cleaner than the collection of polluted dirty water
Explanation:
An animal that is endothermic and homoeothermic A. uses metabolic energy to regulate its body temperature and maintains a relatively constant body temperature B. has its body temperature determined primarily by the environment, but maintains a relatively constant body temperature C. has its body temperature determined primarily by the environment and has a broad range of body temperature variation D. behaviorally regulates its body temperature and has a broad range of body temperature variation E. uses metabolic energy to regulate its body temperature but has a broad range of body temperature variation
Answer: The correct option is A (uses metabolic energy to regulate its body temperature and maintains a relatively constant body temperature).
Explanation:
HOMOEOTHERMIC animals are also called endothermic animals. They are the warm blooded animals which uses heat energy generated metabolically to regulate and maintain a relatively constant body temperature. Examples of animals that are endothermic include the birds and mammals.
The temperature which they maintain is deep inside the body and not the skin temperature.
Also the temperature of a body is affected by the heat it gains and losses. The body gains heat mainly:
--> by absorbing it from its surroundings
--> from the heat released during the catabolic reaction that occur all the time in the body cells.
--> by conduction, convection and radiation from the surface of the body
--> through evaporation, especially of sweat and
--> in the air that is exhaled and urine that leaves the body.
Under normal circumstances, the heat the body gains is balanced by the heat it loses. A RISE in body temperature stimulates the following processes to get rid of excess body heat:
--> A decrease in metabolic rate: the body slows down its activities to decrease the metabolic rate. This reduces the heat released by metabolic reactions, hence minimizing heat production within the body.
A FALL in body temperature stimulates the following processes to produce and conserve heat:
--> increasing metabolic rate: The body increases its metabolic rate, especially that of the liver, to produce more heat
True or False:
REGULAR VARIATION IN MAGNITUDE OR POSITION IS CALLED TRANSLATION.
Subject= Science
Answer:
False
Explanation:
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cell is discovered by whom
Answer:
Explanation:
Cell is discovered by Robert Hooke.
Answer:
The cell is initially discovered by Robert Hooked in 1665
Summarize the differences between early succession, mid-succession, and late succession?
Consumers in the reef can be further classified as filter feeders, or organisms that eat plankton by filtering water; grazers, or organisms that feed on organisms that don’t move; and predators, or organisms that eat other animals. List at least one example of each.
Filter Feeders -
Gazers -
Predators -
Answer:
Filter feeders-tubeworms, basket stars, clams,& sponges... there are many more
Grazers- Sea urchins, damselfish, surgeonfish & cobalt algae... and more
Predators- whales, sharks, barracudas, &dolphin... several more
Muliple choices
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Which statement best describes the breakdown of food in the digestive system?
Carbohydrate digestion starts in the stomach and protein digestion starts in the stomach.
Carbohydrate digestion starts in the mouth and protein digestion starts in the stomach.
Carbohydrate digestion starts in the esophagus and protein digestion starts in the small intestine.
Carbohydrate digestion starts in the small intestine and protein digestion starts in the esophagus.
Answer:
Carbohydrate digestion starts in the mouth and protein digestion starts in the stomach
Explanation:
Salivary amylase is an enzyme found in the mouth it breaks down starch (a carbohydrate) into maltose. protease is the enzyme that breaks down proteins and its found in the stomach .
Answer:
Carbohydrate digestion starts in the mouth and protein digestion starts in the stomach
Explanation:
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Life Science:
Why does Nitrogen have to be continually converted into other compounds in the Nitrogen Cycle?
Answer:
because we can breath the nitrogen otherwise we can die
The human population
doubles every 36 years. If people currently use
25 percent of Earth's primary production, in
what year might humans use 100 percent?
Bees play a central role in the health of terrestrial ecosystems because they are vital
to the pollination of plants. The extinction of bees could cause the collapse of plant-
based terrestrial (land) ecosystems. Based on this description, bees can best be
described as a
A.native species
B.foundation species
C.keystone species
D.specialist species
Answer:
C
Explanation:
Bee can be described as a key stone speices
Explain the causes of the seasons
pls help
Answer:
Seasons change because of earth's rotation.
Explanation:
Earth's tilted axis causes the seasons. Throughout the year, different parts of Earth receive the Sun's most direct rays. So, when the North Pole tilts toward the Sun, it's summer in the Northern Hemisphere.
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The molecule is known as the universal energy source of the cell
Answer:
El ATP es la molécula universal que almacena y distribuye la energía a muchos procesos: fabricación de componentes celulares, transporte, transmisión de señales, etcétera.
Explanation:
Answer: ATP or Adenosine triphosphate
Explanation:
Which statement best describes the pioneer organisms involved
in ecological succession?
Select one:
Pioneer organisms are restricted to desert biomes.
Pioneer organisms do not require sunlight.
Pioneer organisms are the last organisms to appear.
Pioneer organisms modify the environment.
Answer: Pioneer organisms modify the environment.
The statement that best describes the involvement of pioneer organisms in ecological succession is as follows:
Pioneer organisms modify the environment.Thus, the correct option for this question is D.
What is Ecological succession?Ecological succession may be defined as the gradual and continuous replacement of one community by another community over a long period of time.
Pioneer organisms are those organisms that arrive first in any ecosystem which is bare. The pioneer species are always found to be present in the bare area. The organisms that are the last organisms to appear known as climax organisms.
Pioneer organisms modify the environment in such a way that makes the bare atmosphere a little bit improved with respect to the need of other organisms.
Therefore, the correct option for this question is D.
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Please Help!!!!!!
The cell is opening up its DNA during replication. If one side of the helix reads ATG CAA TGG GTC, how will the bases be added to make a new strand?
Answer:
TAC GTT ACC CAG
this is the new strand
What is a model system? Please give an example.
PLEASE EXPLAIN IT'S FOR A QUIZ TOMORROW!!!!!!!!!!!
Two test tubes were filled with a solution of bromthymol blue. A student exhaled through a straw into each tube, and the bromthymol blue turned yellow. An aquatic green plant was placed into each tube, and the tubes were corked. One tube was placed in the dark, and one was placed in direct sunlight. The yellow solution in the tube in sunlight turned blue, while the one in the dark remained yellow. Which statement best explains why the solution in the tube placed in sunlight returned to a blue color?A. Oxygen was produced by photosynthesis.
B. Carbon dioxide was removed by photosynthesis.
C. Carbon dioxide was produced by respiration.
D. Oxygen was removed by respiration.
Answer:
c. is the correct answer
Explanation:
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3 specific human impacts on the biosphere.
If an organism has a vestigial structure, that structure likely once had a function in a(n)
Answer:
Early Ancestor
Which of the following terms signals the reader that
one event or factor caused another?
A. Meanwhile
B. In order to
C. Finally
D. Hence
SUBMIT
Name two pond populations that could not survive in a forest ecosystem
Answer:
Name two pond populations that could not survive in a forest ecosystem, monkeys, ants, and birds.
Explanation:
Down syndrome is a common genetic disorder that is caused by having an extra copy of chromosome 21. Which method will show whether or not a baby has down syndrome?
a. Karyotype
b. Family history
c. Genetic survey
d. Punnett square
Answer:
a. Karyotype
Explanation:
Karyotypes describe the chromosome count of an organism, so all the chromosomes would be in front of you, and it'd be easy to tell if there are 2 or 3 chromosome 21.
What is the speed of a wave with a wavelength of 0.5 m and a frequency of 20 Hz?
Answer:
You multiply 0.5 by 20 which will give you 10 your answer is 10
the speed of a wave with a wavelength of 0.5 m and a frequency of 20 Hz is 10
what is speed ?Speed can be referred as the ratio of distance to the time in which the distance was covered which is a scalar quantity as it has only direction and no magnitude.
The speed is represented as s=d/t, Where, s is the speed in m.s-1, d is the distance traveled in m, t is the time taken in s
There are four types of speed like Uniform speed, Variable speed, Average speed, Instantaneous speed
Uniform speed is where the object covers equal distance at equal interval of time, variable speed is defined as when the object covers a different distance at equal intervals of times.
Instantaneous speed is defined as an object is moving with variable speed, then the speed at any instant of time is known as instantaneous speed.
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Every ____ has a specific _____
• cell membrane
• function
• cell wall
• chloroplast
• mitochondria
• nucleus
• cytoplasm
• organelle
Answer:
Every organelle has a specific function
12. The more genetic variation a population has, the
more likely it is that some individuals will?
a) evolve.
b) migrate.
c) survive.
d) mutate.
Answer:
b migrate
Explanation:
sorry if im wrong
The more genetic variation a population has, the more likely it is that some individuals will migrate.
what is population ?A discrete accumulation identifiable characteristics such as people, animals with the objective of analysis and data collection is called a population.
A population consists of a same group of species who reside in a particular geographical place with their reproductive capacity to interbreed.
In a population Not all individuals are able to survive and reproduce due to genetic variations in them, a local population is restricted to a smaller area or can occupy a larger area, making up for the entire species.
when individuals in local populations spread between other local populations called as metapopulation.
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