Yes some fishes have long tails that can be a threat which can cause fights.
Replication from formation and separation of the strands
The parent plant produced asexually because offspring from asexual reproduction are genetically identical to the parent.
He would say that Lamarck's theory is wrong. Lamarck's theory stated that traits that are used are passed on to the offspring. In other words, if an organism changes during its lifetime in order to adapt to its environment, then its changes will be passed on to its offspring. This is wrong because this means that organisms pass on traits based on genetic information and not based on the environment of the offspring.
Hope this helps.