Biology

Biology, 05.07.2019 11:00, Emptypockets451

Because chickens grind their food within the gizzard instead of with teeth, they in their diet.

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Biology, 17.07.2019 11:00, ghari112345

Me fast , you (: scientists find evidence that the genes involved in tooth development exist in chickens, even though chickens do not normally develop teeth. the formation of teeth in chickens can be controlled by introducing a virus into chicken embryos that "turned on" their tooth-developing gene. they find that the beaks of the virus-modified chicken embryos contain cone-shaped teeth similar to embryonic crocodile teeth. which of the following best describes the conclusion that can be drawn from this experiment? a as bird evolution continues, birds like chickens will develop teeth like dinosaurs and reptiles. b the growth of teeth in chickens supports the hypothesis of a common ancestor between birds and reptiles. c the chickens with teeth are more closely related to crocodiles than they are to regular toothless chickens. d with enough genetic engineering, chicken embryos can develop into reptiles like crocodiles.

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Mathematics, 25.07.2019 10:50, keshonerice

Acow has 32 teeth. each tooth is used for one of two purposes: grinding food or cutting food. the number of teeth that the cow uses to grind food is three times the number of teeth that it uses to cut food. how many of its teeth does the cow use to cut food? a) 9 teeth b) 6 teeth c) 4 teeth d) 8 teeth

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Biology, 27.07.2019 02:00, jalenshayewilliams

Scientists find evidence that the genes involved in tooth development exist in chickens, even though chickens do not normally develop teeth. the formation of teeth in chickens can be controlled by introducing a virus into chicken embryos that "turned on" their tooth-developing gene. they find that the beaks of the virus-modified chicken embryos contain cone-shaped teeth similar to embryonic crocodile teeth. which of the following best describes the conclusion that can be drawn from this experiment? (1 point) as bird evolution continues, birds like chickens will develop teeth like dinosaurs and reptiles. the growth of teeth in chickens supports the hypothesis of a common ancestor between birds and reptiles. the chickens with teeth are more closely related to crocodiles than they are to regular toothless chickens. with enough genetic engineering, chicken embryos can develop into reptiles like crocodiles.

Answers: 1

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Biology, 06.11.2019 21:31, jesusvillar47

Part of a bird's digestive tract, called a gizzard, is able to break up large chunks of food at an extremely fast rate. it is difficult for scientists to watch a gizzard functioning in a live bird. how would building a model of a gizzard a scientist?

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Because chickens grind their food within the gizzard instead of with teeth, they in their diet....

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