Which of these is the process by which homologues exchange chromosome segments at the beginning of meiosis to increase genetic variability in offspring?

What will be an ideal response?


Crossing over

Biology & Microbiology

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This is a nucleotide containing molecule that is commonly used to carry electrons in the cell. 

A. ADP B. ATP C. NAD+ D. pyruvic acid

Biology & Microbiology

Many receptor tyrosine kinase pathways have MAPK as a downstream signaling component. MAPK can phosphorylate target proteins. What type of signaling molecule is MAPK?

A. Adapter protein B. Scaffold C. Second messenger D. Enzyme

Biology & Microbiology

When two lineages originate from the same branch point, what are they referred to as?

What will be an ideal response?

Biology & Microbiology

Single-celled eukaryotes that feed on other organisms and have a cell wall are (algae/fungi/protozoa)

What will be an ideal response?

Biology & Microbiology