Problemas
5. Two aliens (one with straight antenna and one with curly antenna)have many, many offspring and every single one o has straight antenna. Which statement is true? A. Straight antenna are dominant, and curly antenna are recessive. B. Straight antenna are recessive, and curly antenna are dominant. C. Straight and curly antenna are codominant. D. Both straight and curly antenna are recessive.
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Respuesta
A. Straight antenna are dominant, and curly antenna are recessive.
Explicación
## Step 1This problem is about understanding the principles of genetics, specifically the concepts of dominance and recessiveness. The problem presents a scenario where two aliens, one with straight antenna (which we'll denote as 'A') and one with curly antenna (which we'll denote as 'a'), have many offspring. All of these offspring have straight antenna.## Step 2The fact that all offspring have straight antenna suggests that the trait for straight antenna is dominant. This is because, in genetics, a dominant trait is one that will be expressed even if only one copy of the gene is present. In this case, the presence of the 'A' allele (for straight antenna) in the offspring indicates that it is dominant.## Step 3The fact that none of the offspring have curly antenna suggests that the trait for curly antenna is recessive. This is because a recessive trait will only be expressed if both copies of the gene are present. In this case, the absence of the 'a' allele (for curly antenna) in the offspring indicates that it is recessive.