If two homozygous plants with contrasting traits are crossed, the expected genotypes for the offspring will be heterozygous. The dominant trait would be expressed, but they'd be carriers for the recessive trait.
The two same allele plants with contrasting traits are crossed, the expected genotypes for the offspring - heterozygous with the dominant phenotype.
The plants will have the same allele genotype for both of their chromosomes. In other words, Let assume "b" is a recessive allele for a trait and B for a dominant trait then, one plant will have the genotype "BB", and the other will have "bb."
Now, there will only be an expected genotype with these, and that would be "Bb." To find this, you must put the genotypes in a punnet square and calculate the different genotypes.T T
t Tt Tt
t Tt Tt
The B is dominant over the b, so in this case, the offspring plant will have a heterozygous for both traitsThus, The two same allele plants with contrasting traits are crossed, the expected genotypes for the offspring - heterozygous with the dominant phenotype.
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Explanation:To safeguard against groundwater contamination, sanitary landfills are constructed with specific features. They are lined with plastic and compacted clay to act as a barrier between the trash and the natural soil below. This liner prevents potential contaminants in the waste from seeping into the groundwater.
Moreover, landfills are typically built in places where the geography or land use won't interfere with the natural flow of water in the area. They may be located on industrial sites where groundwater is not tapped for drinking or agricultural purposes, reducing the risk of trash pollutants seeping into water sources used by humans. Therefore, the location and construction materials used for sanitary landfills are both essential to protect groundwater resources.
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Why have biologists changed many of linnaeus's original classification of organisms?
Answer:
They were originally classified based on visual characteristics that could be seen on the outside of the organism, however with the advancement of technology and science scientists realized that other characteristics (molecular, structural, etc.) should be considered.
Explanation:
If today nature has an order in the eyes of man, this is due to the work of the Swedish naturalist Carl Lineu, who in the 18th century, when comparing reproductive organs and structures of animals and plants, formulated the system of binomial classification of species. That is, if we can now call ourselves homo sapiens, such nomenclature of genus and species, respectively, is the result of Lineu's work. His contributions did not stop there, since in addition to the species' names, the naturalist grouped them into a hierarchical classification system. Thus, Kingdoms, Philos, Classes, Orders and their subcategories were born.
However, Lineu's classification system was originally established based on visual characteristics that could be seen on the outside of the organism, however with the advance of technology and science scientists realized that other characteristics (molecular, structural, etc.) should be considered.
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a. true
b. false
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Answer:
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Explanation:
Cuz I cheated on the test and fealt that I should help a brotha' out.
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The correct representation of energy flow through an ecosystem is: Sun - autotrophs - heterotrophs.
What is a pyramid of energy?A pyramid of energy can be defined as a graphical model that is used to depict the flow of energy from one trophic level (feeding level) to the next in an ecosystem.
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Natural selection. Reproduce maturity Genetic variation.
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Ans.
The birds given below are showing a population with different color feathers. These variations are known as genetic variation that involves difference in DNA sequence or genotype between the organisms within a population. Difference in genotype leads to difference in their phenotypic characters (physical appearance).
Thus, the correct answer is option). 'genetic variation.'
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