In a developing embryo, different cells begin to transcribe different master genes, depending on where they fall within a gradient of ________

a. protein products of embryonic mRNAs
b. homeodomains
c. temperature
d. protein products of maternal mRNAs


d

Biology & Microbiology

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The ____ lineage contains the fleshy-finned fishes, with fins supported by muscles and an internal bony skeleton

a. Petromyzontoidea b. Chondrichthyes c. Actinopterygii d. Myxinoidea e. Sarcopterygii

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What is the LEAST useful indicator of an evolutionary relationship?

a. base sequence in DNA b. amino acid sequence in a protein c. similar ecological requirements d. similar embryonic development e. similar polypeptides

Biology & Microbiology

Briefly describe the structure of a honeybee society. What are the benefits associated with this organization? What will be an ideal response?

Biology & Microbiology

Cells involved in bone resorption

What will be an ideal response?

Biology & Microbiology