Why do modern scientists use repeated experiments to develop and test hypotheses

First part

Repeated experiments that show the same results are less likely to contain experimental errors.

Second part

Scientific discoveries are enabled by new technologies

Scientific discoveries may lead to new technologies

small, big, or no change could occur in the phenotype. it could cause something as simple as a cats ears to curl backwards or something as frighting as death. it could also occur in the protien-coding area and have an effect on that but no effect on the amino acids. what has to occur is a changing in the hox gene or the control gene.