When an organism has two different alleles for a given trait, the allele that is expressed, overshadowing the expression of the other allele, is said to be
A. dominant.
B. recessive.
C. homozygous.
D. rare.
A. dominant.
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The first law of thermodynamics states that energy can be transformed from one state to another, but it cannot be created or destroyed. Taking this into consideration, what can be said about the energy transferred between levels in a trophic pyramid?
A. Some of the energy in a trophic level is converted to heat and is unavailable to the next level. B. All the energy is transferred between trophic levels because components that have no energy, that is, light, are used to create the energy in the chemical bonds of carbohydrates. C. All the energy necessary for a trophic level is transferred. Because there is less biomass at each trophic level, less energy needs to be transferred. D. Some of the energy is held in one trophic level, and only the energy needed to support the smaller biomass at a higher level is transferred. E. Organisms at higher trophic levels only consume the energy they need from lower trophic levels, leaving a "bank" of energy to support the higher level when food is scarce.
You discover a fungus that makes both sexual and asexual spores. The sexual spores are made in
groups of eight within a structure that bursts open to release the spores. The structures containing sexual spores are found within a multicellular structure that is about five inches tall. Into which group should you classify this fungus?
a. Glomeromycota b. Basidiomycota c. Chytridiomycota d. Zygomycota e. Ascomycota
Which group of bones protects the organs and
supports the weight of the upper body while standing?
a. vertebral column b. pelvic girdle c. pectoral girdle d. ribs and sternum e. femur and tibia
The end result of meiosis is
What will be an ideal response?