When a sperm and egg combine in sexual reproduction, they make a new cell. the new cell will have a. one third the chromosomes from each parent b. half the chromosomes from each parent c. one fourth the chromosomes from each parent d. twice the chromosomes of each parent

How does the author's purpose in this passage differ from an author writing about her personal struggle living with asthma?

Ayoung boy has been found and police are trying to locate his family they take a dna sample from him and begin collec dna samples from families who have missing children if police use dna samples only from the fathers, which type of dn technology can they use to identify the boy's parent? y-chromosome analysis omtdna (mitochondrial dna) analysis vntrs (variable tandem repeats) o pcr (polymerase chain reaction) analysis

Which substance contains thylakoids? a) nadph b)atp c)stroma d)chloroplast