Eyelash length is an inherited trait. In the human population, there is an eyelash length gene. There are two possible variants of this gene-an allele for long eyelashes (> 1cm) and an allele for short eyelashes (1 cm or less). The allele for long eyelashes is dominant (L) and the allele for short eyelashes is recessive (l). An individual who is heterozygous for eyelash length would have which of the following phenotypes?
A. Ll
B. short eyelashes
C. ll
D. long eyelashes
E. LL
Answer: D
You might also like to view...
Histone variants:
A. have been identified for H2B and H4 but not for H2A and H3. B. differ in their C-terminal sequences but not in their N-terminal sequences. C. that have been identified are associated with transcriptional activation only. D. have variant patterns of modifications as a result of the structural differences in their terminal sequences. E. have been found to affect all cellular processes that involve DNA except DNA repair.
Osmosis can only occur if water travels through the
A. cytoskeleton. B. cell wall. C. vacuole. D. ER. E. semipermeable membrane.
The number of protons in a given atom is equal to its
A. atomic number. B. molecular number. C. neutron number. D. mass.
Which phylum is most closely related developmentally to the first vertebrates?
A. Echinodermata B. Arthropoda C. Mollusca D. Annelida E. Chelicerata