What is the human genome? What is the current estimate of the number of genes in the human genome?
What will be an ideal response?
Answer: A good answer will include the following key points.
? All of our genes, together with noncoding DNA, make up the human genome.
? Many genes contribute directly to a particular trait, but others work indirectly by switching other genes on or off.
? Many genes are inherited in the same form by everyone; others vary, contributing to our individuality.
? Within a gene, a particular sequence may contain thousands or even millions of bases, which together constitute a code for the synthesis of one of the many proteins that affect virtually every aspect of the body.
? There are about 22,000 genes in the human genome.
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Because girls tend to evaluate their physical appearance negatively, and because physical appearance is at the heart of their global self-esteem, girls' self-esteem tends to be _________________
lower than boys' during adolescence higher than boys' during adolescence low during adolescence and young adulthood high during adolescence and young adulthood
One reason social withdrawal is so common in nursing home settings is that
A) residents do not have control over their social experiences. B) attendants do not provide enough assistance. C) there are few available social partners. D) older adults prefer to be alone over being in the company of residents.