Which of the following is a characteristic of a “perfect” flower?
a. ability to self-pollinate
b. lack of genetic defects
c. ability to double fertilize
d. creation of megaspores
a. ability to self-pollinate
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Animal cells use exocytosis to secrete all of the following except
A) cell wall material. B) mucus. C) peptide hormones. D) milk proteins. E) digestive enzymes.
Which phrase best describes a plant that is an epiphyte?
a. a plant that grows upon another plant. b. a parasite. c. a plant with the gametophyte generation dominant and conspicuous. d. a plant that has a mutually beneficial relationship with another plant.
A cross was made between homozygous wild-type female Drosophila and yellow-bodied male Drosophila. All of the resulting offspring were phenotypically wild type
Offspring of the F2 generation had the following phenotypes: Sex Phenotype Number male wild 96 male yellow 99 female wild 197 Based on this information: (a) Is the mutant gene for yellow body behaving as a recessive or dominant gene? (b) Is the yellow locus on an autosome or on the X chromosome?
What is meant by the statement that "male bees are fatherless"?
A) Male bees don't play a role in the rearing of bee young. B) Male bees are produced by budding. C) Male bees develop from unfertilized eggs. D) The queen bee's mate dies before the male eggs hatch.