Which of the following best describes the inheritance of a sex-linked trait? A
a recessive allele carried by females that affects only males
B
a dominant allele carried by females that affects only males
C
an allele carried on an X chromosome that can affect males or females
D
an allele carried on the Y chromosome that can affect both males and females

poor water quality affects most estuarine organisms, including commercially important fish and shellfish. the pollutants that have the greatest impact on the health of estuaries include toxic substances like chemicals and heavy metals, nutrient pollution (or eutrophication), and pathogens such as bacteria or viruses.

there really is life in the deepest part

thrombocytopenia, which is a deficiency in blood platelets, can cause bleeding and bruising in the dermis similar to senile purpura. other possible causes include: exposure to ultraviolet rays and aging skin are common causes of senile purpura. senile purpura may also be a sign of collagen loss in the skin and bones.