Three of the four modes of inheritance of organelle genes are • maternal inheritance as in mammals, • paternal inheritance as in gymnosperms, and • selective degradation of one source during mating. What is the fourth?
What will be an ideal response?
biparental inheritance
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Mendel chose the garden pea for his work on inheritance for which of the following reasons? Check all that apply.
_____ Some traits in pea plants are controlled by one dominant allele and one recessive allele. _____ Earlier investigators had shown segregation among the offspring. _____ A large number of true breeding varieties were available. _____ The generation time was short; many offspring can be grown easily. _____ He could choose to self- or cross-pollinate.
Ball-and-socket joints allow flexion, extension, rotation, abduction (moving away from the midline of the body) and adduction (moving toward the midline). Which of the following is(are) an example of a ball and socket joint?
A. the knee B. the elbow C. the hip D. the joints between bones of the fingers
True or false: Bushmen hunters exploit the effects of physiological stress by forcing their prey to run when the temperature exceeds the animal's core temperature
A. true B. false
During the Gram stain, the application of alcohol results in the decolorization of ______ cells.
A. gram-negative B. pleomorphic C. all D. gram-positive