Suppose a dominant allele (n) codes for a big nose and a recessive allele (n) codes for small nose imagine that one organism receive a dominant allele from its mom and a dominent allele from its dad what can be determined about its genotype and phenotype

Joe is breeding cockroaches in his dorm room. he finds that the average wing length in his population of cockroaches is 4 cm. he chooses the six cockroaches that have the largest wings; the average wing length among these selected cockroaches is 10 cm. joe interbreeds these selected cockroaches. from earlier studies, he knows that the narrow-sense heritability for wing length in his population of cockroaches is 0.6. a. calculate the selection differential and expected response to selection for wing length in these cockroaches. b. what should be the average wing length of the progeny of the selected cockroaches?

Aperson with age is more likely to catch diseases that healthy people usually don’t catch.what are these infections called?

Which kind of worm has a closed circulatory system? a planarian b fluke c pinworm d an earthworm