Humans carry all of the genes necessary to develop a tail but we typically don't develop tails because those genes are never activated.
a. true
b. false
a. true
You might also like to view...
The dramatic rise in obesity since the 1980s seems to have been caused by __________.
A. genetic mutations B. an as-yet-unknown combination of genes C. a trend for people to eat more calories per day and to be less physically active D. a trend toward people getting less and less sleep
A common measure of attention and short-term memory is the __________ test
a. eidetic memory b. phonetic-space c. implicit memory d. digit-span
Most toddler conflicts are about toys
Indicate whether the statement is true or false
Girls' rough-and-tumble play tends to emphasize _________, whereas boys' rough-and-tumble play tends to emphasize _________
a. running and chasing; wrestling and fighting c. wandering; hovering b. wrestling and fighting; running and chasing d. smiling and laughing; yelling and crying