A geneticist was asked to investigate the inheritance of acatalasia in dogs. The nomal allele is represented by B and the mutant allele is represented by b.
The geneticist made the diagram in Fig 3.1 to show the inheritance of acatalasia in a family
of dogs. The shaded symbols indicate the dogs with acatalasia.

State the genotypes of the dogs identified as 1,2 and 3 in Fig. 3.1.
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The sketch shows a rynchosaur, an extinct animal that is known only from fossils. there has been much debate about the classification of these creatures. some scientists suggest that they belong with primitive amphibians, and some think they are related to snakes and lizards.the data equally support both cases. which statement best explains how to draw a cladogram that includes the rynchosaur? draw the cladogram for amphibians. draw the cladogram for reptiles. draw two cladograms, both showing the traits, and leave it as a hypothesis. draw two cladograms, both showing the traits, and have scientists vote

In the united states there are strict fishing seasons and limits, but not all countries enforce similar laws. in bangladesh there are few if any fishing restrictions. what might be the reason for less restrictions in smaller countries like bangladesh? a) the united states is the only country worried about overfishing. b) the united states wants to limit the supply of fish to increase the price. c) bangladesh and smaller countries have an unlimited supply of fish in their coastal waters. d) small countries, such as bangladesh, are practicing subsistence fishing, taking only the fish needed to survive.

What are 3 reasons that natural selection occurs