A true-breeding strain of red tulips is crossed to a true-breeding strain of white tulips. All the offspring have pink flowers. When a pink-flowered plant is self-fertilized, the offspring have red, pink, and white flowers, in the ratio 1:2:1. This type
of inheritance is an example of ________.
Fill in the blank(s) with correct word
incomplete dominance
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Antibodies are classified as____
a. nucleoproteins b. immunoglobulins c. steroids d. carbohydrates e. lipids
A(n) ________ lives on or within the host organism for some period of its life
Fill in the blank(s) with correct word
In Drosophila, mutation screening usually involves use of a balancer chromosome that includes three elements: a set of overlapping inversions, an easily recognized dominant mutation, and a recessive lethal mutation that prevents balancer homozygotes
from surviving. Which one, or combination, of these elements is necessary and sufficient to suppress crossovers? A) inversions B) dominants C) lethal recessive D) inversions plus dominant E) lethal plus inversions
What did the first fishes probably lack?
A) eyes B) jaws C) gills D) fins