Question

the blanks to complete the passage about the human genome.

an genome is the basic genetic code, or blueprint, for the transfer of traits from
to offspring through 　. behavior is rarely controlled by 　. rather,
behavior involves 　, and often specific 　 factors influence how
expressed.

mental nurture and education multiple genes psychological
a single gene hereditary transmission

Explanation:

1. The first blank refers to the process of trait transfer from parent to offspring, which is hereditary transmission.
2. The second blank notes that behavior is rarely controlled by one gene, so this is a single gene.
3. The third blank contrasts the single gene, stating behavior involves many genes, so this is multiple genes.
4. The fourth blank refers to factors that influence gene expression related to context/environment, so this is environmental.

Answer:

1. Blank 1 (after "through"): hereditary transmission
2. Blank 2 (after "controlled by"): a single gene
3. Blank 3 (after "involves"): multiple genes
4. Blank 4 (after "specific"): environmental