The answer is b hope it helps.
:)
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.
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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.
Answer:C
Explanation:
Ok so in this experiment what we want to find is the catalyst for the reaction. Our original reaction is the following. A + B --> C, therefore to find which of the unknown substances (X, Y, and Z) is the catalyst reaction we simply have to do the following:
A + B + X --> C
A + B + Y --> C
A + B + Z --> C
The reaction that produces C much faster than our original reaction A + B --> C will be our catalyst. The reason being that one of the substances will increase the rate of the chemical reaction.
I hope it helps, Regards.
Answer:
Prepare three test tubes containing reactant A.
Prepare three test tubes containing reactant B.
Add one test tube of reactant B and one unknown to one test tube of reactant A. Repeat for the other two unknowns.
Time the reaction until bubbling stops.
The unknown that causes the reaction to occur the quickest is the catalyst.
I took the test
Answer:
Carl Linnaeus
b)The equation is glucose + oxygen → carbon dioxide + water and energy is produced in the form of ATP.
c)The equation is carbon dioxide + water → glucose + oxygen + water and energy is produced in the form of ATP.
d)The equation is glucose + oxygen → carbon dioxide + water and energy is required in the form of light.
Answer:
The answer to your question is: B
Explanation:
a)The equation is carbon dioxide + water → glucose + oxygen + water and energy is required in the form of light. This option is totally wrong, the reactants in cellular respiration are sugar and oxygen, and cellular respiration never forms light.
b)The equation is glucose + oxygen → carbon dioxide + water and energy is produced in the form of ATP. This option is correct, in cellular respiration the cell uses sugar and oxygen to make carbon dioxide, water and ATP.
c)The equation is carbon dioxide + water → glucose + oxygen + water and energy is produced in the form of ATP. This option is wrong, it's describing an unknow process to me.
d)The equation is glucose + oxygen → carbon dioxide + water and energy is required in the form of light. This option is partially correct, but the last part makes it wrong because cellular respiration doesn't use light to obtain energy.
Answer:
b)The equation is glucose + oxygen → carbon dioxide + water and energy is produced in the form of ATP.
The correct answer to the question which is stated above is:
RNA has the oxygenated form of ribose sugar, while DNA has deoxygenated form of ribose sugar.
>The pentose, which is ribose, is oxygenated in RNA while in DNA it is deoxygenated