In Drosophila, the allele red eyes (bw+) is dominant to the allele for brown eyes (bw). At another gene locus on the same chromosome, the allele for thin wing veins (hv+) is dominant to the allele for heavy wing veins (hv). Flies homozygous for bw and hv+ are crossed to flies homozygous for bw+ and hv to obtain doubly heterozygous F1 progeny.Given that these two gene loci are very closely linked, the genotypic ratio in the F2 generation should be closest to
A. 3:1
B. 1:2:1
C. 9:3:3:1
D. 1:1:1:1
Answer: B
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When running a marathon, which of the
following is the correct order of “energy molecules” that allow for the supply of energy to muscles?
a. stored ATP>>creatine phosphate>>myoglobin b. myoglobin>>creatine phosphate>>stored ATP c. stored ATP>>myoglobin>>creatine phosphate d. creatine phosphate>>stored ATP>>myoglobin e. creatine phosphate>>myoglobin>>stored ATP
A plant growing in the shade is expected to have a ________ maximum photosynthetic rate than a plant growing in sunlight
Fill in the blank(s) with correct word
What name is given to the open ocean?
A) pelagic realm B) intertidal zone C) benthic realm D) photic zone
Heartworm infections in dogs and cats are caused by a parasitic ________ that infests the heart of the animal.
A. rotifer B. flatworm C. roundworm D. segmented worm E. echinoderm