Answer:
A, This is the case of selective pressure of environmental factors like snow, due to which favored the expression of the allele that formed white coat phenotype. This is not a Hardy-Weinberg principle, in which no selective pressure is applied. The relative frequencies of the alleles change in the gene pool, due to selective pressure, and the expressed alleles are often significant for survival in those conditions.
b,HW equilibrium means no selective pressures like the long, snowy winters selectively favoring the white coat phenotype over the other coat phenotypes. Selective pressures change the relative frequencies of the alleles in the gene pool. It also means the population does not have either immigration or emigration to change the ratios of alleles in the gene pool The Hardy-Weinberg principle of genetic equilibrium tells us what to expect when a sexually reproducing population has no selection pressure, no gene flow, no nonrandom mating, not even genetic drift.
C, ?? I don’t know
Explanation:
3. The sequence of nitrogenous bases is unique to each organism. The sequence of the
bases in DNA is most important for which of the following?
What is the BEST explanation for why grizzly bears are successful in a wide variety of ecosystems?
1. Grizzly bears are large omnivores that hibernate during the winter, so they do not need as much food as you think
2. Grizzly bears are large omnivores that can survive on plants, berries, and small and large mammals.
3. Grizzly bears are large and powerful and prey on large animals for food.
4. Grizzly bears are smart and always know where to find food.
Answer:
SCIENTIFIC NAME: Ursus arctos horribilis
TYPE: Mammals
DIET: Omnivore
AVERAGE LIFE SPAN IN THE WILD: 25 years
SIZE: Five to eight feet
WEIGHT: 800 pounds
SIZE RELATIVE TO A 6-FT MAN:
The size of a food chain can vary, but the number of levels that a food chain can reach is limited. Why does this limit exist ?
Answer:
Energy is lost at each trophic level.
Explanation:
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Energy is lost at each trophic level.
What is food chain ?
Food chain, in ecology, the sequence of transfers of matter and energy in the form of food from organism to organism.
What is tropic level?
Trophic level is defined as the position of an organism in the food chain and ranges from a value of 1 for primary producers to 5 for marine mammals and humans.
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PLEASE HELP I WILL GIVE BRAINALIST
Answer:
I think your answer is B).
Answer:
B An docrcase in water temperature
Summarize How does weathering change
rocks and minerals?
Which characteristic is true of sexual reproduction but not of asexual reproduction?
Answer:
sexual reproduction involves to organisms
Explanation:
20 pts!!!
Researchers are investigating the use of gene therapy as a treatment option for human genetic disorders, such as cystic fibrosis. When gene therapy is successful, how does it treat the disorder?
A. by activating, or "turning on," one or more genes
B. by deactivating, or "turning off," one or more genes
C. by incorporating a human gene into the genomes of bacteria or other organisms
D. by replacing a faulty gene with a normal gene in the human genome
Answer:
A
Explanation:
By replacing a faulty gene with a normal gene in the human genome. Therefore, option (D) is correct.
Gene therapy works by inserting a functioning gene into a patient's cells. A viral vector or other delivery method transports the normal gene into target cells.
In cells, the normal gene integrates into the genome and produces the functional protein that was missing or faulty in genetic disorder patients. Gene therapy replaces the damaged gene with a normal gene to repair the genetic origin of the condition and restore normal cell or tissue function.
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What issue might be present in the soil if the ration to Nitrogen (N), Phosphate (P)
and Potassium (K) are sufficient, but the leaves of a
plant are showing phosphate and potassium deficiency?
Answer:
Low level of nitrogen in the soil.
Adding organic materials poor in mineral nitrogen to the soil, which encourages the subsistence of soil microorganisms on mineral nitrogen to break down these materials, and this causes a temporary reduction in the proportion of mineral nitrogen in the soil.
Soil drought.
Problems with root growth due to soil compression or disease.
The effect on an organism or population of chemical exposure is called __________.
A)
natural hazard
B)
gene-environment interactions
C)
physiology
D)
dose response
E)
heredity
Annie wants to have children, but she and her husband have been unsuccessful so far.
Do her cells in her ovaries need to go through mitosis or meiosis? Choose one, and
explain why.
Answer:
meiosis
Explanation:
The germ cells that enter meiosis become oocytes, the source of future eggs. Consequently, females are born with a finite number of oocytes arrested in the first meiotic prophase. Within the ovary, these oocytes grow within follicle structures containing large numbers of support cells. (i don't know if the explanation is correct but i know that it is meiosis)
Which best describes the relationship between population size carrying capacity and limiting factors
Alligator
A- Producer Primary Consumer
B-Secondary Consumer
C-Tertiary Consumer
D-Decomposer
Answer:
C-Tertiary Consumer
Explanation:
The diets of tertiary consumers may include animals from both the primary and secondary trophic levels. Like secondary consumers, their diet may also include some plants. Examples of tertiary consumers include Hawks, Alligators and Coyotes. Hawks feed on small mammals, lizards and snakes.
1.The muscular system consists of two types of tissue, muscle tissue and ______________________________.
connective tissue
scar tissue
skin tissue\\
What are some of the differences between a forensic autopsy technician and a forensic pathologist assistant?
Answer:
The differences between a forensic autopsy technician and a forensic pathologist assistant are as follows:
Forensic autopsy technician generally work in morgues and hospital while forensic pathologist assistant work in research laboratories and hospital laboratories.Forensic autopsy technician are responsible to prepare the dead body for autopsy while Pathology assistants do research on the tissues of body.Autopsy technician handle morgue examination area, while pathology assistants handles laboratory examination area.A) Yes,because the amino acid changed.
B) Yes,because every mutation changes the amino acid .
C) No , because the amino acid not change
ASAP
Answer: B
Explanation:
Organisms combine glucose and oxygen in order to release energy in what process?
Phillip Gingrich finds an S-shaped bone in this partial skull, a sigmoid process, which is unique to
one particular order of animals in the water today... which one?
Answer:
A primitive whale which he named Pakicetus.
Explanation:
Philip Gingrich is a vertebrate paleontologist at the University of Michigan. He has performed extensive research on whales at the Egyptian desert of Wadi Hitan. His research team member discovered a skull whose braincase was bigger than that of a walnut. Gingerich was able to link the small-brained animal, to an early whale.
The auditory bulla had an s-shaped bony crest known as the sigmoid process and these two features helped whales to hear in water. The case, however lacked other features that helped whales hear beneath the waves. This led Gingrich to the conclusion that the unknown animal was semi-aquatic. This finding also lent credence to the possibility of whales evolving from terrestrial animals.
what is the cell theory
Answer:
a theory in biology that includes one or both of the statements that the cell is the fundamental structural and functional unit of living matter
What conclusion can you draw from the information in the chart?
O The gorilla and human are the most closely related organisms with the fewest differences in their amino acid sequences.
O The chimp and human are the most closely related organisms with the fewest differences in their amino acid sequences.
O The human and horse are the most closely related organisms with the fewest differences in their amino acid sequences.
O The monkey and gorilla are the most closely related organisms with the fewest differences in their amino acid sequences.
Answer:
d
Explanation:
d
The monkey and gorilla are the most closely related organisms with the fewest differences in their amino acid sequences. Hence option d is correct.
What are amino acid?Amino acid is defined as any of the elements present in both plants and animals that come together to produce a substance (protein), which is essential for a healthy body and for growth. The metabolism of amino acids plays a crucial role in many biological processes that take place inside the human body.
An examination of the first complete sequence of the gorilla genome suggests that humans and gorillas last coexisted 10 million years ago. The gorilla is the last of the surviving great apes, including humans, chimpanzees, orangutans, and gorillas, whose entire genetic sequence has been compiled.
Thus, the monkey and gorilla are the most closely related organisms with the fewest differences in their amino acid sequences. Hence option d is correct.
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The two birds shown in Figure A and B are found on one island. The bird species in figure A is moved to a new island, where food size and shape are different from the food found in their current island. The birds left behind (Figure B) on the original island continue to grow and reproduce.
What changes might a scientist expect to see in the species?
A.
The birds on the old island would not change over time and evolve.
B.
The birds on the new island would evolve over time and die out.
C.
The birds on the old island would evolve over time and develop adaptations in their beaks to allow them to eat new types of food.
D.
The birds on the new island would evolve over time and develop adaptations in their beaks to allow them to eat new types of food.
Answer:
D.
Explanation:
because if the birds in figure A move to the new island with new food size and shape they will adapt to the food
Haploid sperm and egg are produced via meiosis. What process is responsible fro producing the 2N zygote?
A. Differentiation
B. Fertilization
C. Replication
D. Transcription
Answer:
Explanation:poda
Answer:
c
Explanation:
10. Deafness in cocker spaniels is inherited. The allele for deafness (d) is recessive to the allele for hearing (D). Two cocker spaniels that are heterozygous for hearing are mated together. What is the chance that a puppy will be deaf?
Question 10 options:
0%
25%
50%
100%
Answer:
25%
Explanation:
If they are both heterozygous, it means they both have a Dd genotype. If you draw out a punnet square Dd x Dd you end up with the following possible genotypes for the puppy:
DD, Dd, Dd, dd
In order for the puppy to be deaf, it must be dd since deafness is recessive, which is 1/4 (25%)
The chance that the puppy will be deaf is 25%. The correct option is B.
What is allele?The term "allele" refers to the alternative form or versions of a gene. People inherit one allele for each autosomal gene from each parent, and we tend to categorize the alleles.
We usually refer to them as normal or wild-type alleles, or abnormal or mutant alleles.
If they are both heterozygous, they have the Dd genotype. As per the Punnett square Dd x Dd, one can see the the following genotypes for the puppy:
DD, Dd, dD, dd
Because deafness is recessive, the puppy must be dd, which is 1/4 of the population.
Thus, the correct option is B.
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How do keystone species shape communities?
Explanation:
A keystone species is an organism that helps define an entire ecosystem. By keeping populations of mussels and barnacles in check, this sea star helps ensure healthy populations of seaweeds and the communities that feed on them—sea urchins, sea snails, limpets, and bivalves.
Answer:
By keeping populations of mussels and barnacles in check
6. How does Widder tell the difference between the species she observes in the deep ocean? Give an example of a species she identifies based on this observation.
Widder can identify different species by observing the differences in:
ColorShapeSizeAmong others.What is a specie?The word specie is used in biology to refer to a group of organisms that can reproduce consistently as they share the same taxonomy.
How can Widder identify different species?Identifying species is possible through multiple techniques that include:
Analyzing the genes of the organism.Identifying species based on observation.In the case of observation, which is a common technique. The best is to observe the physical characteristics of the organism that can make it different from other species. This includes observing:
Shape ColorSizeBehaviorAmong others.Note: This question is incomplete because there is no information about the species Widder is observing. Due to this, I answered it based on general knowledge.
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Answer: Edith Widder uses the bioluminescence (light) produced by the different sea creatures to identify their various species. For example, during her talk, she mentions a fish with a headlight behind its eye that retracted like a Lamborghini’s headlight. She also describes a Christmas tree fish where everything lights up, including the jewel-like organs in its body.
Explanation: This question comes from the TED talk "Glowing life in an underwater world" by Edith Widder. During her talk, she vividly describes her experience seeing sea organisms that display bioluminescence in the ocean.
Create cladograms for the primates and animals groups (skip the Artiodactyla for now). These Claudio grams are a little more complex and you may have to include multiple branches at the same level such as in the example shown at the right. When you had built Cladograms with the lowest possible parsimony score compare them to the accepting Cladogram
Answer:
b
Explanation:
how would you describe what the cells of each stage of the cycle look like ? what are the visible features of the cells.
Interphase, Prophase, Metaphase, Anaphase, Telophase, and Cytokinesis
Interphase:
Is known as the resting stage. Replication of DNA occurs.
- G1
-S
-G2
Prophase:
The chromosomes are visible, centrioles are formed and begin to move to opposite sides. This is where you see the dissolving of the nuclear membrane.
Metaphase:
The chromosomes line up in the centre of the cell.
Anaphase:
This when the cell divides (should look like two circles splitting) you will see the spindles begin to shorten which pull chromatids apart.
Telophase:
The nuclear membrane is reformed.
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Which two processes cycle carbon directly between the atmosphere and biosphere?
I’ll mark as BRANLIEST!!
30 POINTS!!
Please help me!!
Answer:
They are complimentary DNA strands of each other
I remember them via AT (AT-AT from Star Wars and this gets you 2 H bonds) and CG (cross guard light saber, the ridiculous one with the helm of the sword having it's own light saber so it is crossed and has 3 H bonds). Ridiculous makes things more memorable imo.
Explanation:
The instructions, or 'code', in our DNA is dependent upon the order of the _____ in the DNA
-phosphates
-proteins
-bases
- sugars
Answer:
C. Bases
Explanation:
Deoxyribonucleic acid, commonly known as DNA, is the a type of nucleic acid that serves as the genetic material in living organisms. DNA holds information or instructions needed for the synthesis of useful products like proteins that is responsible for growth, reproduction, and general survival of organisms. Hence, it is referred to as the "BLUEPRINT OF LIFE".
However, in the structure the of the DNA molecule, it contains certain monomeric building blocks called NUCLEOTIDES. These nucleotide bases are of four types namely: Adenine, Thymine, Guanine and Cytosine. It is upon these order of nucleotide bases that instructions, or 'code', in our DNA is dependent upon.
A cell that is placed in distilled (plain) water will swell up because it fills
with water. Which process causes the cell to swell?
Answer:
If a cell is placed in a hypotonic solution, water will move into the cell. This causes the cell to swell, and it may even burst. A hypertonic solution means the environment outside of the cell has more dissolved material than inside of the cell. If a cell is placed in a hypertonic solution, water will leave the cell.
Explanation:
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