How does the recessive sickle cell allele stay in the gene pool

f Tyler does not eat a diet that includes essential amino acids, his cells will not be able to build nucleic acids. certain proteins. cell membranes. certain carbohydrates.

A computer model can simulate the aspects of viral reproduction quite well; however, microscopic observation of actual viral reproduction can improve understanding because actual observations A. may reveal greater unknown complexities. B.

A rock formed from cooled and hardened magma or lava

Which of these is the lowest subgroup A. Kingdom B. Genus C. Species D. Order

1. What are characteristics of nonverbal expressions of power and dominance Amy Cuddy mentions in her talk? 2. Do people tend to mirror each other's nonverbals or complement them? Explain. 3. What two hormones relate to power and dominance? 4.

If a DNA polymerase recognizes a guanine nitrogenous base on the template strand, which nitrogenous base will it polymerize to the growing complementary strand? A. A B. C C. G D. T

During the Devonian period of Gondwanaland what were the two organisms that thrived? A) algae and Trilobites B) land invertebrates and dinosaurs C) conifers and early mammals D) angiosperms and humans E) marine invertebrates and land plants

Find the median of 4.5, 7.5, 9, 9, 9.2, 9.3, 10, 10, 10.5 and 13

The octopus can change its skin color and coordinate its body posture and movement in such a way that it resembles a fish. predict why this behavior would evolve despite its costs.

Fossils of a species of bird are found in layer 3. Which layer is most likely to have organisms that lived at the same time as the bird species? A. Layer 5 B. Layer. C. Layer 2 D. Layer 7