In humans a deletion from chromosome 5 typically leads to severe mental retardation and a malformed
larynx; this disorder is known as ____.
a. Turner syndrome
b. Down syndrome
c. cri-du-chat
d. Triple-X syndrome
e. Klinefelter syndrome
C
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Acetylcholine binds this membrane protein, which subsequently opens to allow sodium to enter the cell. Acetylcholine exerts its effect on what type of transport protein?
A. ligand-gated channel B. voltage-gated channel C. mechanosensitive-gated channels D. regulatory protein-gated channels E. stretch-sensitive gated channels
In the system of binomial nomenclature, species are assigned a two-part name: the first part is the ____ and the second
part is the ____name.
a. species; genus b. genus; species c. species; family d. genus; family e. family; species
A function of a plant’s fruit is _____
1.to provide nutrients to the developing plant 2.to provide structure and rigidity to hold the developing embryo in place 3.to protect the pollen grains inside the sporophyte 4.to take advantage of animals, wind or water for seed dispersal
In cultivated stocks, the cross of a variety of white
flower plants produced all red flowers in the F1 generation, but the F2 generation produced 87 red, 31 cream, and 39 white. Explain these results by giving the genotypes possible for each phenotype. What will be an ideal response?