"Ward's Science"

Drosophila melanogaster, the common fruit fly, is widely used in genetic studies. They express a number of mutations such as eye, wing, and body mutations.

Long life cycle (approximately one month). Useful for comparative population studies and for preparing salivary gland chromosome squashes.

Recommended by the Carnegie Institute
Mature Drosophila are cultured in our own labs, and are marked with the culture initiation date. Culture is shipped in our instant medium in a shatterproof vial. The pupae will usually appear within ten days of the ship date. You will also receive WARD’S Drosophila Culture Guide. Note: We can supply any of our single strains in the larger quantity for 100 students. Call our Customer Service department for details.

This harmless insect parasitizes the Sarcophaga (flesh fly) pupae. Females usually lay 30–50 eggs in the pupae, which provide food for the Nasonia larvae when they hatch.

Paired stellate chloroplasts; zygotes.

Encysted euglenoids offer an excellent example of how an organism survives unfavorable conditions.

Through parent body showing mature and developing eggs.

Genus Cnidaria

Example of crithidial form. A hemoflagellate infecting insects.

Trematode rediae, Mixed (wm)

Serial cross sections.

Necturus liver. The enzyme RNAase specifically digests RNA, confirming the existence of RNA in the nucleolus of the cytoplasm. Compare to RNA (sect) mgp.

Smear of isolated cells from buccal cavity of a normal human male. Barr bodies are absent.

Formaldehyde-free grassfrogs. Available in pails or vacuum packs.

Formaldehyde-Free Rabbits. Available in vacuum packs.

Bullfrog Skull

Research-Grade DNA Stain