Question

a dog breeder wishes to develop a breed that does not bark. she starts with a diverse mixture of dogs. generation after generation, she allows only the quietest dogs to breed. after 30 years of work she has a new breed of dog with interesting traits, but on average, the dogs still bark at about the same rate as other dog breeds. which of the following would be a logical explanation for her failure?

Answer 1

The propensity to bark is not inherited. A heritable characteristic is one that is dominant and hence must be inherited.

Genetic information contained in proteins determines this. An organism acquires and passes on to its progeny over its existence.

It can only affect heritable qualities because organisms that are more adapted to survival and reproduction transmit their genes on to the next generation. Only heritable qualities that can be handed on to the next generation have any effect on the following generation.

Heritability is a measure of how effectively genetic variations explain for variances in people's attributes. Height, eye color, and IQ are examples of traits, as are diseases such as schizophrenia and autism spectrum disorder.

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