In a particular plant, leaf color is controlled by gene locu…
In a particular plant, leaf color is controlled by gene locus D. Plants with at least one allele D have dark green leaves, and plants with the homozygous recessive dd genotype have light green leaves. A true-breeding, dark-leaved plant is crossed with a light-leaved one, and the F1 offspring is allowed to self-pollinate. The predicted outcome of the F1 cross is diagrammed in the Punnett square shown in the figure, where 1, 2, 3, and 4 represent the genotypes corresponding to each box within the square. Which of the boxes marked 1-4 correspond to plants with dark leaves?
Read DetailsWhich of the following relationships among alleles of a sing…
Which of the following relationships among alleles of a single gene best explains the observation that a single change in the gene encoding α-keratin results in chickens with frizzled feathers, increased food consumption, higher heart rate and delayed sexual maturity?
Read DetailsMary Brown, age 89, became a resident of the nursing home 3…
Mary Brown, age 89, became a resident of the nursing home 3 years ago after sustaining a stroke. PLOF: Independent (I) transfers gait: hemi-walker mod assist of one in the room and to the bathroom. After a bout with the flu, Ms. Brown’s CLOF: PT: trunk weakness on the left, beginning scoliosis with lateral left curve, ROM dorsiflexion (-15 degrees) unable to ambulate; ST: poor swallowing, pocketing of food, thickener needed for liquids, OT: edema in hand, weak flexion synergy pattern noted at shoulder, 0 rest of the extremity. The interdisciplinary team has made the following recommendations for a wheelchair: wedge cushion, lateral support on left, lap tray with an elevated arm trough. The w/c recommendations have corrected the posture, feeding and edema problems; however Ms. Brown is unable to get out of the w/c independently. Which of the following best describes the equipment given to Ms. Brown?
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