Answer:
There is 50 chance because there are two chromosomes that are same and two which are difeerent . XX MEANs girl XY means boys .
Apple (fruit): leaf, stalk, mesocarp, seed, endocarp, exocarp. Lily (flower): stamen, style, ovary, ovule, , stigma, petal, receptacle, peduncle, and sepal.
Helps to reduce pollution in a community
In the genetic code, codons made of of three bases specify an amino acid. With three bases, there are 64 possible permutations. With three codons corresponding to STOP codons, this leaves 61 combinations that code for an amino acid. This would require 61 distinct tRNA species were it not for the "wobble base"