1.1 When comparing normal meiosis in human males and females
a.) each sperm has 46 chromosomes
b.) in most cases each egg and sperm contain single sex chromosomes
c.) each egg produced contains one more autosome than a sperm cell
d.) all sperm contain the same kind and amount of DNA
e.) each egg has 12 autosomes
1.2 All of the following occur during prometaphase of mitosis in animal cells except
a.) the centrioles move toward opposite poles.
b.) the nucleolus can no longer be seen.
c.) the nuclear envelope disappears.
d.) chromosomes replicate.
e.) the spindle is organized.
1.3 When studying an inherited phenomenon, a geneticist discovers a phenotypic ratio of 9:3:3:1 among offspring of a given mating. A possible explanation for this is a two locus-two alleles at each locus system that exhibits
a. epistasis
b. linkage
c. pleiotropy
d. independent assortment
e. dominance
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1.4. In peas, a tall, yellow-seeded plant is crossed with a homozygous short, green-seeded plant and yields 203 tall, green-seeded plants, 199 short, green-seeded plants, 207 tall, yellow-seeded plants, and 192 short, yellow-seeded plants. The most likely genotype of the tall, yellow-seeded parent is
a. TtYy
b. TTYY
c. ttyy
d. ttYY
e. none of the above
1.5. Given an individual who is heterozygous at 5 loci, how many different gametic genotypes are possible?
a. 25
b. 10
c. 15
d. 32
e. 64