Ionic compounds
A. always form salts in solution.
B. are hydrophobic.
C. are basic in solution.
D. are hydrophilic.
E. are acidic in solution.
Answer: D
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In primroses, the dominant allele of gene K is necessary to synthesize blue flower pigment. Blue pigment synthesis is inhibited by a dominant allele of gene D. In other words, plants with the genotype K- D- will not produce pigment (and their flowers will be white) because of the presence of the D allele. What type of gene interaction determines flower color in primroses?
A) one gene with two completely dominant alleles B) two-genes with recessive epistasis C) two redundant genes D) two genes with dominant epistasis
After DNA fragments with complementary sticky ends base pair, ____seals the gaps between the fragments to produce
a continuous DNA molecule.
a. plasmids b. E. coli c. EcoRI d. DNA ligase e. restriction enzymes
Chromosomes other than those involved in sex determination are known as
a. nucleosomes. b. heterosomes. c. alleles. d. autosomes. e. liposomes.
Genome sequencing of our human ancestor, Neanderthals (Homo neanderthalensis), revealed that Neanderthals have a FOXP2 gene with the same two amino acid changes observed in H. sapiens FOXP2. What can be concluded based on this finding? (Check all that apply.)A) Neanderthals evolved from H. sapiens.B) H. sapiens evolved from Neanderthals.C) Neanderthals may have had the ability to use language.D) These two amino acid changes arose prior to the common ancestor of Neanderthals and H. sapiens.E) Verbal speech was impossible for Neanderthals.
What will be an ideal response?