The stapes, malleus, and ________ bones are located in the middle ear
Fill in the blank(s) with correct word
incus
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An allele is ____ if its effect masks that of a ____ allele paired with it
a. recessive; codominant b. codominant; recessive c. recessive; dominant d. dominant; recessive
e. incompletely recessive; dominantA eukaryotic transcription unit that is 8,000 nucleotides long may use 1,200 nucleotides to make a protein consisting of approximately 400 amino acids. This is best explained by the fact that
A. many nucleotides are needed to code for each amino acid. B. there are termination exons near the beginning of mRNA. C. many noncoding stretches of nucleotides are present in eukaryotic DNA. D. there is redundancy and ambiguity in the genetic code. E. nucleotides break off and are lost during the transcription process.
Emery had no freckles. His wife, Marguerite, was clearly freckled but known to be heterozygous for the gene. Predict the chance that any one of their children will have freckles
A) 75% B) 25% C) 100% D) 50%
Which of the following statements regarding vision is not true?
A. Rhodopsin is found in the membrane of rods. B. Insects and birds can often see into the ultraviolet range. C. Vertebrate rods and cones hyperpolarize in response to light. D. Bright light will often produce action potentials in both rods and cones.