Suppose that an organism has the same life strategy as a maple tree. When will the synaptonemal complex be observed?
a. only in a unicellular haploid phase
b. in each generation
c. only in a multicellular haploid phase
d. only in alternating generations
Answer: d. only in alternating generations
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Most nitrogen-fixing bacteria symbiotically associated with plants are called
A) bacteroids. B) mycorrhizae. C) rhizobia. D) symbiodinia.
Huntington's disease, an often fatal disease of the central nervous system, is inherited from a dominant allele. Furthermore, a person may not show symptoms of the disease until 30 – 50 years of age. Jack and Jill have been married for 40 years and have two children, Joe and Jane. Jack has recently been diagnosed with Huntington's disease. Assuming that Jane does not have the disease, determine
the probability that one of the children will eventually have Huntington's. What is the probability that both Joe and Jane will inherit the disease? Text section: LO2 Key Concept: dominant inheritance Level: Application of concepts What will be an ideal response?
Injections of growth hormone can result in four of the following effects. Which is the exception?
a. maintenance of healthy bone b. maintenance of healthy muscle c. reduction in body fat d. low blood pressure e. potential for diabetes
Which of the following does not occur in both mitosis and meiosis?
(A) Splitting of homologous pairs of chromosomes (B) Replication of DNA during the S phase of Interphase (C) Cytokenesis (D) Formation of Spindle fibers