In garden peas, one pair of alleles controls the height of the plant, and a second pair of alleles controls
flower color. The allele for tall (D) is dominant to the allele for dwarf (d), and the allele for purple (P)
is dominant to the allele for white (p). A tall plant with purple flowers crossed with a dwarf plant with
white flowers produces 1/4 tall purple, 1/4 tall white, 1/4 dwarf purple, and 1/4 dwarf white. What is
the genotype of the parents? What will be an ideal response?
Dd Pp ? dd pp
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Any mutation that increases the risk of disease in an individual is known as a ____ for that disease
Fill in the blank with the appropriate word.
Alternate forms of a gene are called ____
a. homologues b. loci c. alleles d. homozygous e. heterozygous
Increased carbon dioxide in the blood will result in
A. decreased pH of the blood. B. stimulation of the neurons in the respiratory center of the brain. C. increased rate and depth of ventilation. D. all of these events. E. none of these events.
What is the name of the macromolecule that makes up the majority of the cell membrane?
A. nucleotide B. lipid C. carbohydrate D. protein