A gene is a unit of heredity that is responsible for the inheritance of a particular trait from parents to offspring.
What are the principles of natural selection?The four principles of natural selection are:
Variation: Individuals within a population exhibit differences in their traits or characteristics.
Inheritance: Some of these variations are passed from parents to their offspring.
Selection: Individuals with certain variations that make them better adapted to their environment are more likely to survive and reproduce.
Time: Over many generations, the frequency of advantageous traits increases within the population, leading to evolutionary change.
A species is a group of individuals with similar physical and genetic characteristics that can interbreed and produce fertile offspring.
Genetic drift is the movement of alleles from one population to another due to chance events, such as the migration of individuals.
The term that refers to the evolutionary history of a species is "phylogeny".
Phylogeny is the study of the evolutionary relationships among organisms and their history of descent from a common ancestor. It is based on the comparison of anatomical, genetic, and other characteristics among different species.
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The biologist shares his graph showing the results of an experiment that measured the concentration of zooxanthelle of shallow-water coral in picograma per cell.
The shallow water ecosystem depends on water temperatures below 30°C to maintain the symbiotic relationship between corals and zooxanthelle.
What is the relationship between water temperature and coral reefs?Water temperature has a significant relationship with coral reefs. Coral reefs are composed of tiny marine animals called coral polyps that build a calcium carbonate skeleton.
These animals live in a symbiotic relationship with photosynthetic algae called zooxanthellae, which provide them with food and give the reefs their vibrant colors. However, this relationship is sensitive to changes in water temperature.
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How do the
populations in a community depend on
each other?
There are many distinct ways in which populations in a community are interdependent, and these interdependencies form the cornerstone of the intricate interactions that exist between various species in an ecosystem.
What is population?A population is a collection of people belonging to the same species who coexist and communicate in a certain geographical region. Depending on the species and the habitat it lives in, a population can have anything from a few to millions of members.
Examples of how different groups in a society are interdependent include:
Food webs and chains: In a community, many creatures rely on other organisms for nourishment. For instance, plants are the main providers of the food that feeds herbivores, which are then consumed by carnivores. A food web is formed by the links between several food chains, which is a network of energy flow.
Pollination: To enable fertilization and the development of seeds, many plants rely on pollinators like bees, butterflies, and birds to move pollen from one plant to another.
Decomposition: species that break down dead organic materials, such as bacteria and fungus, recycle nutrients and make them accessible to other species in the ecosystem.
Competition: Within a community, populations may clash for resources like food, water, and space. This rivalry may restrict population expansion and have an impact on how species are distributed throughout an ecosystem.
Symbiotic interactions: In a community where two or more species coexist and are dependent on one another for existence, there are symbiotic interactions between the many populations that make up that community.
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Which of the following did Mendel conclude about patterns of inheritance?
A) An organism inherits one gene in total
B) An organism inherits two genes of a given trait during gamete production
C) Similar forms of genes account for variation in the inherited traits.
D) An organism inherits one gene for each trait
The following Mendel concluded about patterns of inheritance : C) Similar forms of genes account for variation in the inherited traits.
What did Mendel conclude about patterns of inheritance?Mendel concluded that inheritance is determined by discrete units called genes, which are passed down from parents to offspring in a predictable manner.
He observed that some traits are dominant over others, and that these dominant traits can mask the expression of recessive traits. Mendel also proposed the Law of Segregation, which states that during gamete formation, the two alleles of a gene separate from each other so that each gamete carries only one allele for each gene.
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Answer:
B.
Explanation:
3. A mass spectrometer is used to get information from
(a) Plants
(c) Rocks
(b) Rubber
(d) Concrete
Answer: Rocks
Explanation:
What is the origin of the term cell in biology?
Answer:
The Origins Of The Word 'Cell' In the 1660s, Robert Hooke looked through a primitive microscope at a thinly cut piece of cork. He saw a series of walled boxes that reminded him of the tiny rooms, or cellula, occupied by monks. Medical historian Dr. Howard Markel discusses Hooke's coining of the word "cell."
Why does fragmented forest habitat increase the risk of predation on bird nests by cats, dogs, raccoons, and other animals? Responses Birds will prefer to make their nests at the edges of forest habitat. Birds are forced to build nests on the ground instead of in protected trees. Predators have an easier time spotting bird nests in fragmented habitat. Predators are more common at the edges of fragmented habitat.
The borders of fragmentation habitat are where predators are more prevalent.
What impact does deforestation have on bird breeding habits?Bird populations are directly impacted by deforestation, mostly due to the destruction of their habitat. A bird's environment serves as its home, and deforestation robs them of their habitat. Many birds are unable to procreate when they are removed from their native habitat, which ultimately causes a reduction in their number.
What impact does deforestation have on animals and birds?Due to the drastic changes it causes to vast areas of ecosystems and habitats, deforestation is one of the land uses that has the greatest impact on migrating birds. The effect of land usage on tropical forests may clearly be seen from above.
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All of the following statements regarding the Kyoto Protocol are true EXCEPT:
Please choose the correct answer from the following choices, and then select the submit answer button.
Answer choices
the treaty set different but specific targets of carbon dioxide reduction for various nations.
the treaty was replaced by the 2016 Paris Agreement.
the protocol was ratified by the United States.
no emission targets were set for developing countries.
Answer:
c
Explanation:
C) The protocol was ratified by the United States is not true.The Kyoto Protocol was an international agreement adopted in 1997 with the objective of reducing greenhouse gas emissions in order to combat global climate change.
The following statements about the Kyoto Protocol are true:
A) The treaty set different but specific targets of carbon dioxide reduction for various nations.
B) The treaty was replaced by the 2016 Paris Agreement.
D) No emission targets were set for developing countries.
However, the United States did not ratify the Kyoto Protocol, which was a major setback for the treaty's effectiveness.
Answer: 3rd option is not true
Explanation:
The United States did sign the Kyoto Protocol but it never ratified it, meaning it did not formally agree to be bound by its requirements. Therefore, the United States did not participate in the treaty's implementation.
I need help pleaseeeeee
Answer:
Ecosystem and biome only.
Explanation:
This is because the communities and population are the counts of how many and what species of animals live in the specific community or population. The abiotic factors are things that aren't living, so animals wouldn't be counted.
The trait for the type of leaf margin is con-
trolled by 1 pair of alleles. Serrate margin is
dominant over entire margin. Two plants
with serrate margin leaves (1 heterozygous
and 1 homozygous dominant) are crossed.
What is the chance that the offspring have
entire leaves
Since the genotype ss is the only one that produces the entire margin phenotype, the chance of an offspring having entire leaves is 50% (1 out of 2 possible genotypes: ss or Ss/sS).
What is an allele?An allele is a variant form of a gene that can determine a specific trait or characteristic. Genes are located on chromosomes and can have multiple alleles, which can be dominant, recessive, or codominant. Alleles can be inherited from both parents and can interact with other alleles to determine the phenotype of an organism. For example, the gene for eye color in humans has several alleles, including brown, blue, and green.
The offspring will have a 50% chance of having entire leaves.
When the heterozygous (Ss) and homozygous dominant (SS) plants are crossed, their offspring will inherit one allele from each parent. The possible combinations of alleles are: SS, Ss, and sS (which is the same as Ss).
The genotype SS and Ss both have the dominant allele for serrate margins, while the genotype ss has the recessive allele for entire margins.
Therefore, the possible genotypes and their corresponding phenotypes are:
SS: Serrate margin
Ss: Serrate margin
sS: Serrate margin
ss: Entire margin
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