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In humans, what determines the sex of offspring and why?

Which of the following is not found in both prokaryotic and eukaryotic cells?

Enzymes are described as catalysts, which means that they _____. 

In a particular plant, two genes control leaf shape and color. Round leaves (R) are dominant to jagged leaves (r). Yellow fruits (Y) are dominant to white fruits (y). A true-breeding round- leaved, yellow-fruited plant is mated with a jagged-leaved, white-fruited plant. What are the genotypes of the plants involved in this cross? 

The solution with a pH of 2 has how many more protons in it than a solution with a pH of 4?  

Which of the following statements defines a genome? 

In his breeding experiments, Mendel first crossed true-breeding plants to produce a second generation, which were then allowed to self-pollinate to generate the offspring. How do we name these three generations?

Which of the following phenotypes is an example of polygenic inheritance?

In the combined processes of glycolysis and cellular respiration, what is consumed and what is produced?

An ionic bond is formed when _____.