Xylem and phloem: 1.transport water and
nutrients

2.cover and protect the plant

3.bring in gases

4.support the plant

Nucleic acid certain protein cell membranes certain carbohydrates

Guinea pig coat color is determined by a single gene. the allele for black coat color is dominant to brown. in a cross between twoblack-haired guinea pigs, 20 offspring are born. if both parents were heterozygous, probability would predict that approximately howmany of the 20 offspring would have brown hair?

Explain why ecosystem diversity results in species diversity in a healthy biosphere