A man who is an achondroplastic dwarf with normal vision marries a color-blind woman of normal height. The man's father was six feet tall, and both the woman's parents were of average height
Achondroplastic dwarfism is autosomal dominant, and red-green color blindness is X-linked recessive. How many of their daughters might be expected to be color-blind dwarfs? A) none
B) half
C) one out of four
D) three out of four
A
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The phylum that includes snails, clams, oysters, and octopuses is the
A. Ectoprocta. B. Brachiopoda. C. Mollusca. D. Annelida. E. Phoronida.
Amplification is an important characteristic of signal transduction pathways involving surface
receptors. What is amplification and how is it accomplished in the cell?
What will be an ideal response?What characteristics make an organism a good candidate for Mendelian studies?
What will be an ideal response?
Which of the following statements about nucleosomes is false?
A. Nucleosomes convert a DNA molecule into a chromatin thread about one-third the length of the initial DNA. B. Nucleosomes are found only in mitotic chromosomes. C. Nucleosomes can be seen in the electron microscope. D. Nucleosomes represent the first and most fundamental level of chromatin packing. E. A nucleosome consists of DNA wrapped around eight histone proteins, plus a short segment of linker DNA.