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.
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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.
B) It is the second-largest source of energy on Earth.
C) It is the type of energy most often used by humans.
D) It is the easiest type of energy to harvest for use.
Answer:
The correct answer is D) proteins.
Explanation:
Proteins are part of the structure of ribosomes along with other RNA particles. They have an important function within the functions that are performed within the cell membranes, because they are made up of around 50% of the total cell, but it may be greater in others depending on the type of function they perform.
D) Proteins Ribosomes are particles consisted of RNA that are used to synthesize proteins. Ribosomes can be found floating within the cytoplasm or attached to the endoplasmic reticulum.
B. A woman walks in a straight line with the sun to her right at nine o'clock in the morning. Toward which pole does she walk?
C. A man walks in a straight line with the sun to his right at three o'clock in the afternoon. Toward which pole does he walk?
D. A line of longitude
Woman walks in a straight line towards the north pole. In the morning the sun is in the east.
At night the sun is in the west therefore the man is walking to the south pole.
Equator is the termed as the line of latitude.
A line of longitude is known as the vertical lines which are parallel to the prime meridian.