Please help . (Pretend*) the human ability to roll your tongue is dominant to not being able to roll your tongue (*it’s not really
that simple.). Draw a pedigree to show the inheritance of this trait, given the following family history:
Grandpa Snow is a tongue roller but Grandma Snow is not. They have four children, 2 sons and 2 daughters, who
are all rollers. Their last daughter, Judy, married John Flake. John’s parents are both rollers, but John’s two sisters
are non-rollers. John is a roller. John and Judy Snow-Flake have three children named Crystal Snow-Flake (nonroller), Delicate Snow-Flake (roller) and Jake Snow-Flake (roller).
Give the possible genotypes of each individual. Pedigree:
Grandpa Snow:
Grandma Snow:
Judy Snow-Flake:
John Flake:
Crystal Snow-Flake:
Delicate Snow-Flake:
Jake Snow-Flake:

1) gene flow

- it is described as the transfer of genes from one population to another population so that frequency of gene is increased.

-a zebra migrates to join a different herd of zebras.

2) natural selection

- a mechanism of evolutionary change in which individuals with advantageous traits survive and reproduce whereas the others ( those that can not adapt) eliminate from the population.

-competition for sunlight leads to taller trees.

3) mutation

- permanent change in the nucleotide sequence of dna ( genetic material) that could have harmful or useful consequences.

-the dna of a snake changes to make its venom stronger.

4) genetic drift - it is a random phenomenon ( that occurs by chance such as fire) that results in change in the gene frequency in a small population.    

-a grassfire randomly sweeps through a population of buffalo and kills most of the animals.

explanation:

answer; i believe the correct answer is (sporophyte);

the correct answer is b. possesses the characteristic of compartmentalization of organelles, wherein the organelles are bound by membranes.

explanation: