A recessive trait is expressed when the genotype is _______________
A. homozygous dominant or heterozygous
B. homozygous recessive or heterozygous
C. heterozygous only
D. homozygous dominant only
E. homozygous recessive only
E
You might also like to view...
Soil particles composed of decomposing organic matter are called ____
a. sand b. humus c. silt d. clay e. mineral
The process of apoptosis can remove structures such as mammary tissue in male mammals
a. True b. False
Some deer mice are physiologically adapted to live at high altitudes because of the following:
a. adults maintain fetal forms of hemoglobin. b. mutations in hemoglobin that increase its oxygen-binding affinity. c. mutations in myoglobin that increase its oxygen-binding affinity. d. mutations that increase heart rates. e. mutations that decrease heart rates.
When it is important to count the number of cells, determine cell size and differentiate between dead and live cells a ________ is used.
A. plate count B. SEM C. flow cytometer D. methylene dye indicator E. Coulter counter