In a partially diploid F? exconjugant, there are two alleles for lac (1 and 2 ) and two alleles for his (3 and 4). The phenotype of this cell is identical to a lac 1 his 4 cell. What is the best interpretation?
A) Lac 1 and 2 and his 3 and 4 share only lac 1 and his 4 phenotypes.
B) Lac 1 complements lac 2 and his 3 complements his 4.
C) Lac 1 and his 4 are dominant.
D) Lac 1 and his 4 are wild types.
E) Lac 1 shows its phenotype only if his 4 is also present.
C
You might also like to view...
Photosynthesis must provide a source of electrons and H+ ions because ______________
a. atmospheric CO2 must be oxidized by adding electrons b. CO2 must be reduced to produce sugars c. hydrogen atoms are added to oxygen to form water d. hydrogen ions and electrons react to produce hydrogen gas e. hydrogen ions and electrons are converted into oxygen gas
. Two species of warblers colonize the same island habitat. Both species nest in similar locations and eat the same type of prey. Eventually, competition will probably cause one species to
A. migrate. B. grow exponentially. C. speciate. D. be eliminated.
Allele pairs are most likely to assort independently of one another when
A. they are sex-linked. B. they control related traits. C. they are on different chromosomes. D. they control unrelated traits. E. they are on the same chromosome.
The autonomic nervous system is a part of the:
A) appendicular nervous system. B) peripheral nervous system. C) central nervous system. D) somatic nervous system.