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

Biology & Microbiology

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

Biology & Microbiology

The process of apoptosis can remove structures such as mammary tissue in male mammals

a. True b. False

Biology & Microbiology

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.

Biology & Microbiology

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

Biology & Microbiology