A New Kind of Tulip Is Produced That Develops Only

question 40

Multiple Choice

A new kind of tulip is produced that develops only purple or pink flowers. Assume that flower color is controlled by a single-gene locus and that the purple allele (C) is dominant to the pink allele (c) . A random sample of 1000 tulips from a large cultivated field yields 847 purple flowers and 153 pink flowers. Estimate the proportion of all purple flowering plants that are heterozygotes and homozygotes.

• A) heterozygotes = 694, homozygotes = 153
• B) heterozygotes = 565, homozygotes = 282
• C) heterozygotes = 476, homozygotes = 372
• D) heterozygotes = 424, homozygotes = 423
• E) heterozygotes = 0, homozygotes = 847

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Definitions:

Chalky Fossils

Fossils composed primarily of calcium carbonate making them appear white and chalk-like in texture.

White Cliffs

Natural formations made of white, chalky material, like the famous White Cliffs of Dover along the English coastline.

Diatomaceous Earth

A naturally occurring, soft, siliceous sedimentary rock that is easily crumbled into a fine white to off-white powder, used in various industrial and commercial applications.

Pellicle

Structure that supports the cell membrane of some species of protists; used to maintain structure in a water environment.