What kinds of general observations cause one to conclude that development is the result of variable gene activity?
What will be an ideal response?
Individual cells of multicellular organisms produce different gene products, and each apparently has an equal genomic complement.
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In an atom, ____ spin around the nucleus
a. electrons b. protons c. neutrons d. both neutrons and protons e. both protons and electrons
Red-green color blindness is an X-linked recessive trait. Two normal-vision parents have a color-blind son. Indicate
the genotype and phenotype of each parent and the son. What will be an ideal response?
Which of the following may contribute to pregnancy problems?
a. taking naps b. being active c. being over 30 d. having dietary deficiencies e. having limited protein intake
Which characteristic differentiates hagfishes from other craniates?
A) Bony jaws B) Lobe-like fins C) Two-chambered hearts D) A lack of gills E) Skeletal elements surrounding the nerve cord