BIOLOGY B – PRIMAVERA EXAM 2024

Which of the following is an example of a group behavior that enhances survival? - ANS-I think it is- male peacocks attracting females with a colorful tail Correct-lions hunting in packs Scientists are studying a genetic disorder. They discover that when both parents are carriers, and do not express the disorder themselves, their children have a 25% chance of developing the disorder. If only one parent is a carrier, none of the children express the disorder. What type of disorder are they most likely studying? - ANS-autosomal recessive What describes a use for restriction enzymes? - ANS-cutting DNA strands at specific locations Why have frequent small controlled-burn wildfires not helped to maintain chaparral ecosystems? - ANS-NOT- The heat from forest fires destroys the roots of chaparral plants. Fire destroys the seeds of many types of chaparral shrubs. What describes the DNA of cancer cells? Select all that apply. - ANS-Often contains mutations that affect genes involved in the cell cycle Often contains more than one different mutation What are some ethical concerns with whole genome sequencing? - ANS-people could make money off the genome sequences of others your genome could be sequenced without your knowledge or consent genomes may reveal information about mental illnesses If 100 units of energy are found in the plants, how much energy will be found in the trophic level containing the mouse? - ANS-10 units