In a family pedigree of several generations, it
is found that freckles appear in every
generation and affect both sexes equally.
Freckles is most likely a _____ trait.
a. dominant
b. recessive
c. X-linked
d. epistatic
e. pleiotrophic
A
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One phenotypic trait used for species identification and description is the analysis of the types and proportions of the fatty acids present in the cytoplasmic and outer membranes. The methodology employed is often nicknamed FAME
Indicate whether the statement is true or false.
A strawberry farmer's crop has been devastated by a fungal infection. The farmer searches for any fungi-resistant strawberry plants in his fields, but finds none. Why?
A. Due to vegetative reproduction, his plants are genetically diverse. B. Due to vegetative reproduction, his plants are not genetically diverse. C. Due to sexual reproduction, his plants are not genetically diverse. D. Due to sexual reproduction, his plants are genetically diverse.
Which of the following blood cells are derived from megakaryocytes?
a. red blood cells b. monocytes c. platelets d. neutrophils
If a person had defective centromeres, which
of the following would result?
a. the DNA would not coil around histones b. DNA could not duplicate c. sister chromatids could not attach to each other d. the chromosome number would be reduced e. none of these would result