A group of cells having a common (A)____ and usually performing a common functin, called (B)____

Answer

To answer the question, we need to fill in the blanks with the appropriate terms based on the definitions provided.

1. **Identify the first blank (A)**: The question states "A group of cells having a common (A)____". We need to determine what this commonality is. The transcript mentions that the group of cells has a common origin. Therefore, the appropriate term to fill in the first blank is "origin".

2. **Identify the second blank (B)**: The next part of the question states "usually performing a common function, called (B)____". The transcript indicates that a group of cells that perform a common function is referred to as "tissue". Hence, the term to fill in the second blank is "tissue".

Putting it all together, we can complete the sentence as follows:

A group of cells having a common (A) **origin** and usually performing a common function, called (B) **tissue**.