Which often following observations did Mendel make as a result of his experiments with dihybrid crosses?
A.) Dominant traits are inherited together.
B.) Different traits are inherited separately.
C.) Similar traits are inherited in pairs.
D.) Recessive traits are inherited unpredictably.
Ans: B.) Different traits are inherited separately.
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A rise in aquatic nitrogen and phosphorus levels leads to a strong increase in the population growth rate of algae and cyanobacteria. This suggests that nitrogen and phosphorus are typically _______________ in aquatic habitats
A. always abundant B. not at all present C. the limiting factors for planktonic growth D. unnecessary for planktonic growth
Brown algae lack true roots, but have similar structures called ____ that anchor them to the substrate
a. stipes b. fronds c. thalli d. blades e. holdfasts
What would be a consequence of a mutation that disables the production of cyclin-dependent kinases (Cdks)?
A) Telomere length would be shortened significantly. B) The nuclear envelope would disintegrate. C) Cell-cycle control would not be possible. D) DNA would not contain any phosphate groups.
All of the following statements are true regarding discoveries made by the Human Microbiome Project except
a) the genes coded by our microbiome number in the millions, whereas human cells contain approximately 21,000 genes. b) areas of the body once believed to be sterile, are now known to harbor microbes. c) the microbiota does not contain pathogens; all of the microbes in our microbiome are non-pathogenic. d) the composition of the microbiome has implications for the development of other, non-infectious diseases such as diabetes, obesity and asthma. e) bacteria, as well as viruses and fungi, make up the microbiome