Crosses in which F1 plants heterozygous for a given allele are crossed to generate a 3:1 phenotypic ratio in the F2 generation are known as __________
A) replicate crosses
B) reciprocal crosses
C) test crosses
D) monohybrid crosses
E) dihybrid crosses
D
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Analysis of the genome and transcriptome of the highly radiation resistant bacterium Deinococcus radiodurans has revealed all of the following EXCEPT
A. genes whose products are involved in DNA replication and recombination are dramatically up-regulated after irradiation. B. genes whose products are involved in cell wall metabolism and cellular transport are dramatically up-regulated after irradiation. C. it has more DNA repair genes than E. coli. D. its genome consists of two circular chromosomes and two plasmids.
How are an organism’s lifetime energy use and economics analogous?
What will be an ideal response?
The sequence of amino acids in a protein represents its ____
a. primary structure b. secondary structure c. three dimensional shape d. tertiary folding pattern e. biological function
If an organism has a relatively large number of Hox genes in its genome, it most likely _____
A) has Hox genes expressed in all cells of its body B) has multiple paired appendages along the length of its body C) has a relatively complex anatomy D) belongs to one of the first groups to evolve on Earth