a region of a chromosome on spanning the centromere is broken and reattached in the reverse direction. this is an example of which type of chromosomal defect?

This is one of the five kingdoms in the older biological succession. organisms in this kingdom are prokaryotic

The table below shows the number of foot bones in some horse fossils. horse fossil recordhorse fossil number of foot bonesp 19q 17r 24s 13ancient horses had more bones in their foot then present-day horses. the present-day horse has 11 foot bones. what is the correct order of evolution of the horse starting from the youngest fossil? a. q p r s b. s r p q c. s q p r d. r p q s

What was the land like over 500 million years ago? what was under the sea?