Neandertals existed until approximately:a
5,000 years ago.
b. 15,000 years ago.
c. 30,000 years ago.
d. 70,000 years ago.
e. 100,000 years ago.
C
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Normal fruit flies have red eyes. Flies with mutations that block the function of the X-linked white gene have white eyes. The wild-type allele is completely dominant to mutant alleles. A white-eyed female fruit fly is mated to a red-eyed male. One of their hundreds of female progeny is white-eyed. What is the likely karyotype of this white-eyed daughter?
A) XX B) XXY C) XO D) XXX E) XYY
If a carbohydrate polymer is limited to two monomer units, such as sucrose made from glucose and fructose, it is called
A. an oligosaccharide. B. a complex carbohydrate. C. a disaccharide. D. a polysaccharide. E. a monosaccharide.
Touching your chin to your chest is an example of ____________________. Fill in the blank(s) with the appropriate word(s)
In lilies, white flowers (W) are dominant to purple flowers (w). If two plants that are heterozygous for flower color are mated, the genotypic ratio of the offspring would be
A) 3:1. B) 1:1. C) 1:2:1. D) 9:3:3:1. E) 1:1:1:1.