Some species of cacti are very tall and usually have two L-shaped arms, one on e

Q: Some species of cacti are very tall and usually have two L-shaped arms, one on e

Answer: A) Genotype of cactus would be aa (recessive allele). Since one arm of the cacti is longer than the other, it is only possible when the genotype is aa since there cannot be any dominant A allele. B) Yes if the parents are genotype Aa, then since A is the dominant allele, therefore, the parents of cactus can have the phenotype with arms of the same length.

ID: 172034 • Letter: S

Question

Some species of cacti are very tall and usually have two L-shaped arms, one on each side. Let’s say you lived near the Sonoran desert, where cacti are common and you happen to have one growing in your backyard. Your cactus has two arms but one is longer than the other. Now, assume that arm lengths in these cacti are controlled by a single gene with arms of the same length (A) being dominant to arms of different length

A. What was the genotype of your cactus?

B. Could one of the parents of your cactus have had a phenotype with arms the same length? Explain your answer.

Explanation / Answer

Answer:

A) Genotype of cactus would be aa (recessive allele). Since one arm of the cacti is longer than the other, it is only possible when the genotype is aa since there cannot be any dominant A allele.

B) Yes if the parents are genotype Aa, then since A is the dominant allele, therefore, the parents of cactus can have the phenotype with arms of the same length.

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Some species of cacti are very tall and usually have two L-shaped arms, one on e

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Some species of cacti are very tall and usually have two L-shaped arms, one on e

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