Why is seed dormancy an important plant adaptation?
What will be an ideal response?
Dormancy allows seeds to remain inactive until desirable growing conditions occur. For example seeds may be dormant during dry periods and germinate when enough moisture is present. Many seeds do not germinate until after they have been exposed to a cold period (mimics winter).
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How many alleles are there of each SNP?
A. one B. two C. three D. four E. any number, depending on the SNP
Which of the following statements describes the hypothesis proposed to explain the regular arrangement of leaves around the stem?
A. Primordia are pre-programmed to grow in a set arrangement. B. Primordia are unable to communicate. C. Chemical signals from developing leaf primordia create regions preventing new primordial growth. D. Developing leaf primordia physically block new primordial. E. We do not currently have a hypothesis to explain how these growth patterns occur.
A patient has a serious respiratory infection. A sputum sample yielded a bacterium that did not have any peptidoglycan. You hypothesize that the identity of this microbe could possibly be ________.
A. Mycobacterium tuberculosis B. Staphylococcus aureus C. Borrelia burgdorferi D. Mycoplasma pneumoniae E. Streptococcus pneumoniae
A karyotype
a. compares one set of chromosomes to another. b. is a visual display of chromosomes arranged according to size. c. is a photograph of cells undergoing mitosis during anaphase. d. of a normal human cell shows 48 chromosomes. e. can reveal the genotype of an individual.