red fish-recessive

green fish-dominant

-Can two red fish mate and have green offspring? Vice Versa?

wsg

wikipidea is wrong tho

To determine whether two red fish can have green offspring, we need to consider the genetics of the fish. If red is a recessive trait and green is a dominant trait, it means that a fish needs to inherit two copies of the red allele to be red, while having just one copy of the green allele would result in the fish being green.

If both fish are red, it suggests that they have two copies of the red allele. Therefore, if two red fish mate, they can only pass on the red allele to their offspring. As a result, they cannot have green offspring because they do not possess the green allele to pass on.

On the other hand, if a red fish mates with a green fish, the green fish must have at least one copy of the green allele and no copies of the red allele. In this case, all of their offspring would inherit one copy of the red allele from the red fish and one copy of the green allele from the green fish. Thus, the offspring would be heterozygous (having one of each allele), resulting in them being green.

So, to sum up:

- Two red fish cannot have green offspring because they do not possess the green allele to pass on.
- A red fish mating with a green fish can have green offspring.

No

Use a Punnett square.

https://en.wikipedia.org/wiki/Punnett_square

Red fish are all rr.

Green fish are either GG or Gr.