What do transfer RNA molecules do during protein synthesis?


copy the coded message from the DNA and carry it into the nucleus

copy the coded message from the protein and carry it into the nucleus

carry amino acids and add them to the growing protein

copy the coded message from the DNA and carry it into the cytoplasm

The _____ along a gene specifies the type of protein that will be produced.

number of DNA bases

order of RNA bases

number of RNA bases

order of DNA bases

What happens during meiosis?

Each sex cell copies itself to form four new chromosomes.

Two sex cells combine to form a single new cell.

Chromosome pairs separate and are distributed into new sex cells.

Chromosome pairs remain together when new sex cells are formed.

A mutation that results in antibiotic resistance is a _____.

neutral mutation

environmental mutation

helpful mutation

harmful mutation

Which describes meiosis I?

The chromosomes move to the center of the cell.

Centromeres hold the two chromatids together.

The chromosome pairs line up in the center of the cell.

A copy of each chromosome in the cell is copied.

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