A cross between a plant with red flowers (R = dominant) and a plant with white flowers (are = recessive) yielded 47 plants with red flowers and 51 plants with white flowers. What are the genotypes of the parent plants

Red parent: Rr

White parent: rr

Explanation:

Number of red flower plants yielded = 47

Number of white flower plants yielded = 50

Ratio of red to white flower = 1:1 approximately

Let us assume that the genotype of the red parent is heterozygote (Rr), since the white allele is recessive, the genotype of the white parent is definitely rr.

Rr   x   rr  =  Rr (red), Rr (red), rr (white), rr (white)

Ratio of red offspring to white offspring = 1:1

Hence, the genotype of the red parent is Rr while that of white parent is rr.

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what statement best describes the difference between the sympathetic and parasympathetic nervous systems?

the sympathetic nervous system prepares the body for intense physical activity and is often referred to as the fight-or-flight response. the parasympathetic nervous system has almost the exact opposite effect and relaxes the body and inhibits or slows many high energy functions.