In horses, black color (B) is dominant over chestnut color (b). Find the genotype and phenotype ratios of a cross between a hybrid black horse and a chestnut horse. What is the probability that the offspring will be chestnut color?

9. wind power creates pollution. water air soil noise

Anton created a chart listing different types of materials. which best complete the chart?

Duchenne muscular dystrophy is a serious condition caused by a recessive allele of a gene on the human x chromosome. the patients have muscles that weaken over time because they have absent or decreased dystrophin, a muscle protein. they rarely live past their twenties. how likely is it for a woman to have this condition? a) women can never have this condition.b) one-fourth of the daughters of an affected man would have this condition.c) one-half of the daughters of an affected father and a carrier mother could have this condition.d) only if a woman is xxx could she have this condition.