swers at the same time.
11.
People with Down syndrome receive education and training to learn _____.
their chances of having a genetic disorder
about the excess mucus in their lungs
how their condition can best be treated
skills to find employment
12.
Sex-linked traits that are controlled by recessive alleles are _____ likely to show up in males.
more
less
not
equally
13.
Hemophilia is caused by _____.
a missing copy of one chromosome
a recessive allele on the X chromosome
codominant alleles for the trait
an extra copy of a chromosome
14.
Many characteristics are affected by interactions between genes and _____.
alleles
carriers
the environment
chromosomes
15.
Use the diagram to answer the question.
Which describes Step 1?
The plasmid containing the human gene is being taken up by a bacterial cell.
The bacterial cell is reproducing, and the new bacteria contain the human gene.
The human gene is attaching to the open ends of the plasmid and forming a closed ring.
An enzyme is cutting open the plasmid and is removing a gene from the human DNA.