Bedrock striations. Striations are marks or lines in the bedrock caused through glacial movement
<span>Many traits require the concerted action of multiple genetic loci, often in combination with the environment.</span>
The correct answer is one of its two alleles.
The unique - tertiary structure of the enzyme is what makes it unique - this in combination with the receptors at the active site confer specificity.
The KT boundary marks a mass extinction event. the KT boundary is the time between the Cretaceous and Tertiary periods. An asteroid hit the earth at the end of the Cretaceous and that caused the end of the Cretaceous period. Before the KT boundary, pollen from angiosperms and gymnosperms is high. After the meteor hits the earth, a mass extinction occurs and the amount of pollen from gymnosperms and angiosperms decreases dramatically, while the amount of spores from ferns increases. During the Cretaceous period there were many species of gymnosperms and angiosperms but they disappeared at the KT boundary, when the asteroid hit the earth.
