Exam4cellbiolnocreditanswerkey

During which phase of the cell cycle does the cell duplicate its DNA (and chromatids)?

What organelle produces the spindle fibers that move the chromosomes during mitosis?

A mass of body cells that grows and divides uncontrollably, but is encapsulated within a layer of connective tissue and does not spread is called a:

Which of the following is NOT an advantage of asexual reproduction compared to sexual reproduction?

Mitosis occurs in _______________, while meiosis occurs in _________________.

A spermatogonium (stem cell) undergoes mitosis.  What are the products?

How is meiosis different in oocytes compared to spermatocytes?

During which stage in meiosis does the crossing over of chromosomes occur?

Homologous chromosomes are…

Much of the modern understanding of heredity began with Gregor Mendel studying pea plants.  One ______________ of the plants he studied was seed texture, with the two possible ________ being wrinkled and smooth.

What does it mean for a plant to be true breeding for purple flower color?

If you wanted to perform a test cross with the individuals in generation C to determine which are homozygous dominant and which are heterozygous, what kind of plant would you breed them with?

Which generation in this set of crosses would be considered the F2 generation?

Which of these generations contains only heterozygous individuals for seed texture?

What percentage of generation C would you expect to have a homozygous dominant genotype?

Two dogs of a certain breed are crossed.  The mother has a long tail, and the father has a short tail.  All the offspring have medium-length tails.  When two medium-length dogs are bred, ¼ of the offspring have long tails, ½ have medium tails, and ¼ have short tails.  What pattern of inheritance is shown here?

A different breed is crossed, this time with a father having black fur and a mother having brown fur.  All the offspring are brindle, meaning it grows both black and brown hairs in an alternating pattern.  What pattern of inheritance is this?

Male-pattern baldness (b) is a recessive sex-linked trait.  What would the genotype of a normal female and carrier female look like?

If a normal male and a carrier female had children, what percentage of their boys would have male-pattern baldness?

The Law of Independent Assortment states that two genes will independently separate during meiosis, resulting in the different possible combinations of sperm or eggs produced by the parent.  Which of the following must be TRUE for the law to hold?

EXTRA CREDIT QUESTION:

Which of these is the smallest level of organization that still has all the characteristics of life?