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:
D) Jaws and paired appendages
Explanation:
Jaws provided the ability to churn and grind food, while paired appendages enabled various locomotive methods such as running, walking, hopping, etc.
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Plants have a cell wall composed of cellulose, chloroplasts, and a large central water-filled vacuole.