It sounds like you're asking about homologous structures. These are structures in different species that share a common ancestor. They may have different functions but have similar underlying anatomy due to their shared evolutionary history.

Here's how this relates to your question:

* Similar patterns: The basic structure of these homologous structures is similar across species. For example, the bones in a bat wing, a human arm, and a whale flipper are all arranged in a similar way.

* Different but related organisms: These structures are found in different species that are related through common ancestry.

* Same kinds of cells: These structures are built from the same types of cells, even if they are arranged differently or have different functions.

Here are some examples of homologous structures:

* The forelimbs of vertebrates: Bats, whales, humans, and birds all have the same basic bone structure in their forelimbs, even though these limbs have very different functions.

* The flower parts of plants: Different species of flowers have different arrangements of petals, sepals, stamens, and pistils, but these structures are homologous and share a common origin.

* The embryos of vertebrates: Vertebrate embryos, including humans, fish, and chickens, have a similar development stage where they have gill slits and tails. These structures are homologous, even though they are only temporary in some species.

Therefore, similar patterns in the development of different but related organisms are often a result of homologous structures built from the same types of cells. This is strong evidence for the theory of evolution and the common ancestry of all life.