Which one of the following statements is true of the 32 allele in the CCR5 gene? (Choose all that apply)
A. It codes for a mutant protein that is
completely inactive.
B. It leads to a deletion which maintains the
reading frame.
C. It provides some protection against HIV
progression to AIDS in both its heterozygous
and homozygous forms.
D. It is an example of a beneficial mutation.
E. It affects the attachment of HIV to an
animal cell by altering one of the viral
proteins.
A,C,D
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Hibernation in small mammals is an example of what specific phenomenon?
A. sleep B. rest C. torpor D. hiding E. activity
The zygote produced during double fertilization is ____
a. diploid b. tetraploid c. polyploid d. triploid e. haploid
Almost all houseplants, woody ornamentals, and orchard trees are clones grown from ____of a parent plant
a. root fragments b. stem fragments c. leaves d. pollinated flowers
e. seedsThe allele for sickle-cell anemia is inherited with the RFLP XL322 94.7% of the time
It is inherited with the RFLP NM502 98.6% of the time. Both of these RFLPs are used diagnostically to predict who will inherit the allele for the disease. Is the polymorphism representing each RFLP also responsible for sickle-cell anemia? What will be an ideal response?