Ethylene is an organic compound produced by ripening fruits. in a controlled experiment, researchers found that ethylene gas stimulated the ripening process in newly harvested fruits. which of the following describes the most likely connection between natural ethylene production and fruit ripening?
(a) as a result of metabolic inactivity, newly harvested fruits are unable to absorb ethylene gas from the atmosphere.(b) ethylene gas is a chemical signal through which ripening fruits trigger the ripening process in other fruits.(c) because of normal phenotypic variation, only some of the fruits in a given generation are expected to produce ethylene gas.(d) the rate of ethylene gas production by ripening fruits is an indicator of the relative age of an ecosystem.

Draw the structure of dna nucleotide with adenine as nitrogenous base

Nhumans, abo blood types refer to glycoproteins in the membranes of red blood cells. there are three alleles for this autosomal gene: ia, ib, and i. the ia allele codes for the a glycoprotein, the ib allele codes for the b glycoprotein, and the i allele doesn't code for any membrane glycoprotein. ia and ib are codominant, and i is recessive to both ia and ib. people with type a blood have the genotypes iaia or iai, people with type b blood are ibib or ibi, people with type ab blood are iaib, and people with type o blood are ii. if a woman with type ab blood marries a man with type o blood, which of the following blood types could their children possibly have? in humans, abo blood types refer to glycoproteins in the membranes of red blood cells. there are three alleles for this autosomal gene: ia, ib, and i. the ia allele codes for the a glycoprotein, the ib allele codes for the b glycoprotein, and the i allele doesn't code for any membrane glycoprotein. ia and ib are codominant, and i is recessive to both ia and ib. people with type a blood have the genotypes iaia or iai, people with type b blood are ibib or ibi, people with type ab blood are iaib, and people with type o blood are ii. if a woman with type ab blood marries a man with type o blood, which of the following blood types could their children possibly have? a, b, ab, and o ab and o a, b, and o a and b

Explain the source of radioactivity in uranium in earth’s crust by which it produces nuclear radiation