An A/a; B/b dihybrid is testcrossed, and about ¾ of the progeny phenotypically resembles the dihybrid parent, while ¼ resembles the tester parent. If the dihybrid parent was selfed, what would be the expected phenotypic ratio in the progeny? a. 9:3:4
b.12:3:1
c. 9:3:3:1
d. 9:7
f. 15:1
e.13:3

Now it's your turn to investigate human impact around the world. grab your virtual lab coat and put on your environmental science hat. you will be taking a trip around the globe to explore three locations. at each location, you will investigate the cause and effect relationships of deforestation, desertification, and urbanization. you will also gather evidence of how these factors have impacted the environment over time

The breakdown of food is accomplished by enzymes. a. physical b. chemical c. mechanical d. none of the above

Areal dna molecule consists of thousands of these pairs of nucleotides. what is the pairing arrangement of the nitrogen bases