Because of the mechanism of sex determination, males of many species can be neither homozygous nor heterozygous. Such males are said to be ________
A) recessive
B) complementary
C) dominant
D) hemizygous
E) None of the answers listed are correct.
Answer: D
You might also like to view...
Characteristics of genetically engineered plants and plant products include
(a) better nutrition. (b) longer storage lives. (c) resistance to disease and insects. (d) all of the above.
Which of the following statements about homeotic genes is true? a. All homeotic genes encode enzymes for metabolic pathways that produce pigments affecting eye and body color
b. All homeotic genes encode transcription factors with a homeodomain that can bind to a promoter. c. Homeotic genes encode enzymes that allow Drosophila to break down and digest fructose. d. Homeotic genes are believed to have evolved recently as they are not interchangeable between most species.
In the classification of organisms, similar genera are grouped together into a
A) phylum. B) family. C) class. D) species. E) genus.
The marine euphoric zone is comparable to the __________ zone of lakes
a. profundal b. intertidal c. abyssal d. littoral e. limnetic