If one is attempting to determine the influence of genes or the environment on phenotypic variation, inbred strains with individuals of a relatively homogeneous or constant genetic background are often used. Variation observed between different inbred
strains reared in a constant or homogeneous environment would likely be caused by genetic factors. What would be the source of variation observed among members of the same inbred strain reared under various environmental conditions?
What will be an ideal response?
Nongenetic factors generally categorized as "environmental" components
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If a certain stretch of DNA reads ATTACGAG, what would the corresponding mRNA sequence be?
What will be an ideal response?
The name of the third tubule that sperm enter after they have been produced in the first tubule. _____
A) Endometrium
B) Testis
C) Cervix
D) Uterus
E) Oviduct
F) Ovaries
G) Vagina
H) Seminal vesicle
I) Penis
J) Prostate gland
K) Vas deferens
L) Glans penis
At sea level, what is the partial pressure (mm Hg) of oxygen in the air we breathe?
a. 21 b. 50 c. 100 d. 160 e. 540
Which term describes one or more communities interacting with each other and the physical environment through the
flow of energy and cycling of materials? a. meta-community b. habitat c. biome d. ecosystem e. niche