The R and S genes are linked and 10 map units apart. In the cross R s / r S × r s / r s what fraction of the progeny will be R S / r s?

A) 5%
B) 10%
C) 25%
D) 40%
E) 45%


A) 5%

Biology & Microbiology

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An individual who is heterozygous for cystic fibrosis ___

A. will have children who are all carriers of cystic fibrosis B. has cystic fibrosis C. is a carrier D. cannot have children with cystic fibrosis

Biology & Microbiology

A DNA microarray (also called a DNA chip) can be used to ________

A) isolate genes from eukaryotic cell nuclei B) scan a population of nucleic acids for abundance and mutations C) assay protein output from a genomic database D) mutate genes of interest E) trap genes that are both active and inactive

Biology & Microbiology

Which infective agent and disease are INCORRECTLY paired?

a. chancroid – Haemophilus ducreyi b. genital warts – Mycoplasma genitalium c. syphilis – Treponema pallidum d. trichomoniasis – Trichomonas vaginalis

Biology & Microbiology

The special dyes used in fluorescence microscopy that absorb light at one wavelength and emit light at a different wavelength are called ________.

Fill in the blank(s) with the appropriate word(s).

Biology & Microbiology