Ecosystems, the interactive system of living and nonliving organisms in a specific location, CHANGE SLOWLY OVER TIME. When new plants and animals arrive in an area, they either thrive or struggle. Thriving species sometimes displace native species. When this happens, the system as a whole begins to change.
Answer:
c. Aa Bb
Explanation:
The parents were pure breeding with genotypes AAbb and aaBB. A cross between AAbb and aaBB would produce AaBb genotypes in F1 progeny. Two F1 strains would be crossed to produce F2 progeny. The F2 progeny would have the genotype ratio= 1:2:1:2:4:2:1:2:1.
Out of all the obtained genotypes in the F2 generation, the proportion of "AaBb" genotype was 4/16. Therefore, "4" in the given ratio represents the genotype "AaBb".
Answer:
bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbichxplanation:
Step 1: Pacemaker Impulse Generation. ...
Step 2: AV Node Impulse Conduction. ...
Step 3: AV Bundle Impulse Conduction. ...
Step 4: Purkinje Fibers Impulse Conduction.