It's a timed i will mark branliestthere are six people in the fisher family. olivia and marcus are the parents. they have four children: violet, nathan, jonas, and claudia. neither marcus nor olivia can roll their tongues.- how many of their children could be born with the ability to roll their tongues? - how many of their children could be hybrids? - what is the genotype of the whole family?

if both Marcus and Olivia can't roll their tongues,

1.then none of the childrens can roll their tongue too.

2.None of the children could be hybrid.

3.the genotype of the whole family is 100% inability to roll tongue.

a- all cells come from pre-existing cells

in 1859, charles darwin set out his theory of evolution by natural selection as an explanation for adaptation and speciation. he defined natural selection as the "principle by which each slight variation [of a trait], if useful, is preserved".