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Answer:
75 to 150 ounces of water a day
When you get a vaccine it injects a controlled amount of the illness into you, so the immune system can build up an immunity. The memory cells come into play when the illness comes back.
Answer:
1/2
Explanation:
Father: is a heterozygote for this trait
. Meiosis: 1/2 is the frequency for the normal allele
Mother: has two recessive alleles (i.e., doesn't have the trait). Meiosis: 2/2 is the frequency for the normal allele
In consequence, the probability of having polydactyly is: (1/2) x (2/2): 1/2