The number and appearance of chromosomes in a cell is called a karyotype. A karyotype can only be seen and studied with a microscope. To make karyotypes easier to understand, karyograms are often made. In karyograms, homologous chromosomes are put side by side and then arranged by size.
A zigzag stitch is a great way to seam knit fabrics. Its inherent stretch allows for the fabric to stretch and move without fear of popping a seam. On light to medium weight knits, try using a stitch length of 1.5 and a width of 5. This setting closely mimics the look and function of an overlock stitch.
Rib or ribbing is another type of knitting we see in everyday knitted items. For example, skirts, scarfs, sweater cuffs and edges or even neck lines. So, basically ribbing is everywhere. In this short video, I demonstrate how to knit 2x2 rib.