During embryonic development of animals, tissue layers form. This process of embryonic tissue development is called Gastrulation.
Answer:
um whats ur question, tell me on comments
Explanation:
(its actually 8 points)
Answer: Okay what is the question?
Explanation:
A larger brain allows humans to solve complex problems.
The size of the human brain has changed randomly over time due to mutations.
A large brain increases humans’ ability to fight and survive disease.
Answer:
A large brain allows humans to solve complex problems.
Explanation:
The large brain in humans has enabled them to solve a complex problem in of the real world and also enabled them to survive more as compared to humans with the smaller brains.
In seven million years the size of the human brain is tripled. That allows them to store and process a huge amount of information and also help to interact with the people in the surrounding better.
Hence, the correct answer would be option B.
Lipids are fatty acids which can have a structural or functional role in cells:
For example structural lipids in the cell membrane are important in the cell membrane structure as they enable the cell to move and aid in the process of diffusion. Functional roles include that of fatty acid chains such as cholesterol which acts as an energy storage. These can later be Brocken down into smaller particles to release energy.
Green plants are green because of the pigment chlorophyll, which absorbs most wavelengths of light except for green. The wavelength of light being reflected or transmitted by green plants is in the range of approximately 500-570 nanometers.
Green plants appear green because they contain a pigment called chlorophyll, which absorbs most wavelengths of light except for green. This means that green light is reflected or transmitted by the plant, which is then detected by our eyes as the color green.
The wavelength of light that is being reflected or transmitted by green plants is in the range of approximately 500-570 nanometers. This is within the visible light spectrum, which ranges from about 400 to 700 nanometers.
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Earlobes can be either attached or detached. The allele for attached earlobes
is recessive (e), and the allele for detached earlobes is dominant (E). What
must be true if a boy is born with attached earlobes?
A. He has a heterozygous genotype.
O B. He has no E alleles.
C. He has no recessive alleles.
O D. He has one of each allele,
SUBMIT
If a boy is born with connected earlobes, he has no E alleles because the allele for detached earlobes is dominant (E), whereas the allele for attached earlobes is recessive (e). So, the correct option is B.
A dominant allele is one that will overpower a recessive allele's expression. Hence, only the trait linked to the dominant allele is manifested when a dominant allele and recessive allele coexist in the genotype of offspring. Consequently, for a recessive allele phenotype to manifest, both of the recessive allele must be present in the progeny.
A recessive allele causes connected earlobes (e) while the dominant earlobe detachment allele (E)
A child with the EE genotype would have disconnected earlobes.
As features of dominant alleles are manifested in heterozygous genotypes, offspring with the Ee genotype would also have disconnected earlobes. Only the child with the ee genotype would have connected earlobes. A homozygous recessive genotype is genotype ee.
Thus, the correct option is B.
Learn more about Dominant allele, here:
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Answer:
B. He has no E alleles.
Explanation:
In order for the boy to have an attached earlobes phenotype, he must have no E alleles, because the E is dominant. So his genotype must be ee. If he has even just a single E allele (like Ee) he will have detached earlobes, because the dominant trait will mask the expression of the recessive trait.
Why not A or D: Heterozygous Ee (one of each allele) would result in detached earlobes.
Why not C: If he has no recessive alleles, EE, he would have detached earlobes.