If your parents are heterozygous for a gene, what is the chance that you will have at least one copy of it?

A) 0% B) 75% C) 25% D) 50%


Answer: B

Biology & Microbiology

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True or false? _____ Mutations always result in negative effects on the organism. _____ Mutations are always large-scale (e.g., involving at least 10,000 base pairs of DNA)

DNA). _____ Mutations are never large-scale (e.g., involving at least 10,000 base pairs of DNA). _____ Most mutations are caused by an environmental pollutant. _____ Mutation rates are constant in all organisms. _____ Mutation rates are higher in men than in women because men have higher metabolic rates than women. _____ Mutation occurs every time a cell divides. _____ All mutations provide genetic variation on which evolution may act. What will be an ideal response?

Biology & Microbiology

Non-enveloped and enveloped viruses both may enter the host via endocytosis

Indicate whether this statement is true or false.

Biology & Microbiology

What are tree rings? How can they be used to map changes in weather?

What will be an ideal response?

Biology & Microbiology

DNA is associated with proteins, forming a complex called:a

chromosomes. b. nucleoli. c. nucleus. d. genes. e. chromatin.

Biology & Microbiology