Exam 3: Chromosome Transmission During Cell Division and Sexual Reproduction

You are studying a diploid organism that has 14 pairs of chromosomes. How many chromatids will a cell from this organism have in metaphase of meiosis II?

If an allele is inherited on the X chromosome, but not the Y, it is said to be an example of ________.

If an organism has five pairs of chromosomes, how many chromosomal combinations are possible at metaphase I of meiosis?

Zip1 is a protein in yeast that is required for synaptonemal complex formation. Assuming synaptonemal complexes are required for meiosis in yeast, where do you predict that cells lacking Zip1 will arrest (stop progressing through meiosis)?

Cell division in prokaryotic cells is called ________, while in eukaryotic cells it is called ________.

During this phase of the cell cycle chromosomes start to condense.

Organelles are

The yeast Saccharomyces cerevisiae produces haploid cells of two mating types, a and α, which are morphologically similar. Cells of opposite mating types can mate. Saccharomyces cerevisiae is a(n) ________ species.

Which of the following indicates the correct order of these events?

During this phase of the cell cycle, the sister chromatids are formed.

In a species of turtles you are studying, you find that when eggs are incubated at a low temperature, the hatched turtle will be male. Eggs incubated at a high temperature yield females, and intermediate temperatures lead to both male and female offpsring. This mode of sex determination is most similar to that in

The location of a gene on a chromosome is called its ________.

A diploid organism that you are studying has 17 pairs of chromosomes. How many total chromosomes are found in a somatic cell from this organism? A sperm cell? An egg cell?

During this phase of the cell cycle the nuclear membrane starts to disassociate.

The process of crossing over occurs during which phase of meiosis?

In a plant, which of the following is triploid (3n)?

During this phase of the cell cycle the microtubules of the spindle fiber attach to the kinetochore.

A male produced from an unfertilized haploid egg is an example of what type of sex determination system?

During sexual reproduction, each parent contributes one set of chromosomes. Members of a pair of chromosomes (one from each parent) are called ________.

You are performing a fruit fly cross similar to those that Morgan performed. Unfortunately, you forgot to write down the parents of your cross. You count the progeny, and find you have 40 red-eyed males, 80 red-eyed females, and 40 white-eyed males. Assuming that all genotypes from this cross should have equal survival rates, what are the genotypes of the parent flies?