An otherwise normal yeast cell with a diploid number of 32 chromosomes does not undergo
replication prior to M phase. What would be the result after mitosis and cytokinesis, assuming that all
processes after S phase occur properly?
What will be an ideal response?
Without replication, there will not be enough DNA to divide between the two daughter cells. If the
spindle fibers are attaching to each chromosome from different spindle poles, some chromosomes will
end up in one cell after mitosis and cytokinesis and the rest of the chromosomes will end up in the
other cell. It is unlikely that either daughter cell will have enough DNA to be viable.
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Which of the following organic molecules is commonly used for energy storage?
A. proteins and nucleic acids B. lipids and carbohydrates C. nucleic acids and lipids D. carbohydrates, nucleic acids, and lipids E. proteins, carbohydrates, and lipids
An Italian physician, ________, challenged the concept of spontaneous generation by demonstrating that maggots do not arise from decaying meat but rather from developing fly eggs.
Fill in the blank(s) with the appropriate word(s).
Common recessive alleles present in a family can result in a pedigree that looks like ____ inheritance
a. X-linked recessive b. X-linked dominant c. autosomal dominant d. autosomal recessive e. Y-linked
Many of the color varieties of summer squash are determined by several interacting loci: AA or Aa gives white, aaBB or aaBb gives yellow, and aabb produces green. Assume that two fully heterozygous plants are crossed
Give the phenotypes (with frequencies) of the offspring.