Mendelian genetics?

Mendel found that each of the 7 characteristics he studied showed the same pattern of inheritance. One parent trait disappeared in the F1 generation only to reappear in one quarter of the F2 generation. The mechanism governing this inheritance pattern is?





A. a sperm or egg carries only one allele for each inherited trait because allele pairs segregate during gamete production.





B. there are alternative forms of genes that account for variation in inherited characteristics.





C. if the two alleles of an inherited pair differ, then one determines the organism’s appearance and is the dominant allele.





D. for each characteristic, an organism inherits two alleles, one from each parent.





E. law of dominant and recessive alleles.

Mendelian genetics?
the answer is E


because it says that there is a trait that "disappears" and that proves the law of dominant and recessive alleles. An allele can disappear, and then reappear if both of the parents are heterozygous for this trait, then there is a one fourth of a chance that the offspring would show the recessive trait, which is what happened in this situation.
Reply:E since they are looking for a "mechanism"
Reply:The Law of Segregation





A. a sperm or egg carries only one allele for each inherited trait because allele pairs segregate during gamete production.

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