Which of the following statements is true regarding pedigree analysis?
a. Pedigree charts always enable you to predict the characteristics of the offspring.
b. Squares represent females, while circles represent males.
c. Darkened shapes always represent individuals with the trait being traced.
d. Horizontal lines connect siblings.
e. The length of the vertical lines is dependent on the relatedness coefficient between two individuals.
Ans: c. Darkened shapes always represent individuals with the trait being traced.
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All eukaryotes have a membrane-delimited nucleus.
Answer the following statement true (T) or false (F)
35. The influenza virus contains an RNA genome. Every year a flu vaccine is designed to protect against three different strains of the influenza virus. Why do scientists make a new vaccine each year?
A. The virus develops resistance to the vaccine. B. People change their habits each year and become susceptible to different strains of the virus. C. The virus can rapidly mutate into new strains. D. The common influenza virus can come from many species of animals, including cats and dogs. E. Our bodies develop resistance to the vaccine and it becomes less effective.
Which of the following is not a photosynthetic pigment?
A. Phycobilin B. Carotenoid C. Leukophyll D. Chlorophyll
Why is water so necessary in metabolism?
What will be an ideal response?