Download Unit 7 Review Questions

Unit 7 Review Questions
• Determine the chromosome numbers if the
diploid number of the organism is 50:
– Number of chromosomes in haploid cells:
– Number of chromatids in a haploid cell during
metaphase:
– Number of chromatids during metaphase I,
meiosis:
– Number of chromosomes at the end of
metaphase II
• List three processes that can result in genetic
variety
• Describe the structure of DNA
• Describe the structure of chromosomes:
• Compare and contrast mitosis in plants and
animals
• Give 5 differences between mitosis and
meiosis
• Why does the cell cycle need to be regulated?
• Describe the process of regulating the cell
cycle by cyclins and cdk’s
• Differentiate between DNA replication on the
leading and lagging strand.
• Describe how the Hershey and Chase
experiment contributed to the discovery of
DNA.
• Haplopappus is an annual flowering plant that
grows in deserts. It has a 2n number of only
four.
– This means that the cells in the vegetative parts of
the plant that are not undergoing mitosis have how
many DNA molecules?
– During metaphase of mitosis, how many DNA
molecules would be in the nucleus?
• What phase of the cell cycle are most body
cells in?
• List and describe the external environmental
factors that influence the cell cycle.
• A horticulturalist breeds orchids, trying to
obtain a plant with a unique combination of
desirable traits. After many years she finally
succeeds. To produce more plants like this one,
should she cross-breed it with another plant or
clone it? Why?
• Each sperm cell of a pea plant contains seven
chromosomes. What are the haploid and
diploid numbers of this plant?
• Identify the stage and type
of cell division you see on
the picture.
• Determine the haploid and
diploid number of this cell.
• Label the chromosomes
(duplicated or not
duplicated ?), centromere,
nonsister chromatids,
homologous chromosomes,
chiasmata, sister
chromatids, spindle fibers,
centrioles