How do the HOX genes in the paddlefish match the HOX genes in humans ?

Hox genes are known as homeobox genes and they help in the morphological arrangement and development of different cells from the head to the toe of animals.

These genes are responsible in the patterns exhibited by our own hands and feet. The paddlefish Hox genes helps in the formation and arrangement of its skeletal bones which is more developed than other teleosts.

answer:

convection currents in the magma drive plate tectonics. heat generated from the radioactive decay of elements deep in the interior of the earth creates magma (molten rock) in the aesthenosphere. the aesthenosphere (70 ~ 250 km) is part of the mantle, the middle sphere of the earth that extends to 2900 km.

the correct answer is 4) heat and pressure

metamorphic rocks arise from transformation of existing rocks types, in a process called metamorphism. during metamorphism the original rock(prolith) change into metamorphic rock by heating (150-200c) and pressure of more than 1000 bar. the original rock can be sedimentary, igneous, or existing metamorphic rock.