Why did only about one fourth of mendel's f2 plants exhibit the recessive trait

15 ! come and answer! a(n) is the general term for an infectious disease that has spread across a city, region, or country.

The steps in the formation of extrusive igneous rocks are listed below in an incorrect order: 1. rock melts due to high temperature. 2. rock is buried deep under earth's surface. 3. magma is forced out of earth's surface during volcanic eruption. 4. lava cools and crystallizes to igneous rock. which of these best shows the correct order of steps in the formation of extrusive igneous rocks? 1, 3, 4, 2 2, 1, 3, 4 3, 4, 2, 1 4, 2, 1, 3

Which best describes a gene? a. a sister chromatid b. a chromosome c. a tetrad d. a piece of a chromosome