Answer:
1/2.
Explanation:
The autosomal dominant trait may en defined as the trait that can express itself even in the heterozygous condition and in the homozygous dominant condition as well.
Let the B allele is responisble for the roll tongue and b is recessive allele. The woman can roll the tongue and she must have the genotype Bb because her one parents is normal. The woman married with a man with non roller ( bb). The Bb × bb cross results in the following progeny Dd, Dd ( roller), dd and dd ( non roller). The probability of the child being a roller is 1/2,
Thus, the answer is 1/2.
1. B 2. C 3.A 4. A molecule is when two or more atoms join together. An element makes up the atoms that form molecules. 5. Similarities include both are cells and each cell are surrounded by cell membranes. 6.A fish is an organism and a rock is not because fish contain the characteristics needed for life, while a rock does not.
The greek root-word Bios means life
B because a new species adds more diversity to your ecosystem
