Breckland Scientific 2023 Catalogue

Genetics & DNA

Genetics

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1 GENETIC TASTE TEST STRIPS Quick, easy, and completely safe means to analyse commonly tested genetic traits. Simple taste tests allow students to determine their possible genotypes. The ability to taste PTC (Phenylthio Carbamide) and Thiourea is a genetically heritable trait that follows basic Mendelian patterns. They both taste bitter to some people. This is a genetic variation which normally occurs in a ratio of 75% who can taste PTC and Thiourea versus 25% of those who cannot. Sodium Benzoate is a preservative found in many foods. It is also a compound that some people cannot taste. It can taste bitter, sweet, sour or salty depending on your individual genetic makeup. Since the inheritance of tasting Sodium Benzoate is more complicated than straightforward Mendelian genetics, it is not a good trait to use for teaching genetics but demonstrates that we are all very diverse, and that much of our diversity is genetic. Non impregnated strips can be used as a known or blind control. Cat No. Description Price Per HHE-250-100 PTC 4.03 100pk HHE-250-150 Sodium Benzoate 4.03 100pk HHE-250-200 Thiourea 4.03 100pk HHE-250-250 Control (non-impregnated) 3.54 100pk 2 DROSOPHILA MELANOGASTER - LIVE Mixed culture of fruit flies. Contains parental flies which will have laid eggs on the medium - these will subsequently develop into larvae, pupae and adults. The complete life cycle from egg to adult takes about 10 days at 25°C. On receipt, the cultures should be incubated at between 22-25°C, and following pupation the newly emerged flies can be used for crossing or sub- culturing. All cultures contain approx. 25 specimens. These non-virgin flies may include some dead parents as well as the larvae you require. Please note: When ordering Virgin Females please allow at least 21 days Cat No. Description Price Per BLO-250-100 Wild Type Culture* 19.97 25culture BLO-250-150 White Eye Culture* 19.97 25culture BLO-250-200 Vestigial Wing Culture* 19.97 25culture BLO-250-250 Ebony Body Culture* 21.18 25culture BLO-250-300 Scarlet Eye Culture* 19.97 25culture READY MADE DROSOPHILA FOOD This ready to use food medium is supplied in 10 tubes with foams bungs. The food is prepared under sterile conditions and should last for several weeks when stored in a refrigerator between 2 and 4°C. An anti-mould agent is included in the food formula to improve longevity. Cat No. Description Price Per BLO-400-100 Drosophilia Ready Made Food 33.43 10pk

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Genetic Taste Test Strips

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*Live Specimen Delivery All live specimens must be sent by next day courie r to ensure they arrive alive. This is included in the price. No despatches will take place on a Friday for a Monday delivery as we cannot be confident they will survive the weekend. Please specify when you would like the specimen(s) to arrive and we will do our best to ensure they arrive in time.

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DROSOPHILA CONSUMABLES Cat No. Description

Price Per

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BLO-400-155 Drosophilia Quick Mix Medium

26.98 1kg

BLO-400-210 Foam Bungs 30 x 30mm (dia. x l)

17.22 50pk

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www.brecklandscientific.co.uk T: 01785 227227 | sales@brec landscientific.co.uk | F: 01785 227444