Question

what fraction of the fishes in aquarium are moving toward the weeds if there are 8 fishes​

Answer 1

Answer:

When one single gene starts affecting multiple traits of living organisms, this phenomenon is known as pleiotropy. A mutation in a gene can result in pleiotropy. One example of pleiotropy is Marfan syndrome, a human genetic disorder affecting the connective tissues.

Step-by-step explanation:

When one single gene starts affecting multiple traits of living organisms, this phenomenon is known as pleiotropy. A mutation in a gene can result in pleiotropy. One example of pleiotropy is Marfan syndrome, a human genetic disorder affecting the connective tissues.

Answer 2

Answer:

an aquarium, green plants absorb or remove waste produced by fishes and provide useful substance to fishes. If all the green plants are removed from an aquarium, the waste released from fishes gets accumulated in a fish tank. This accumulation can cause bacterial growth and reduction of oxygen level. Thus, the correct answer is option A.  

Step-by-step explanation:

2