Answer:
Option D, Zero out of four (0%)
Explanation:
As we know, achondroplasia is an autosomal dominant pattern. Now a girl having normal stature mate with a partner who also has a normal stature.
Thus let us assume -
Allele for disproportionately short arms and legs be represented by "A"
while allele for normal stature be represented by "a"
Now genotype of parents would be
Female - aa
Male - aa
Thus,
aa x aa
aa, aa, aa, aa
Thus, option D is correct.
Answer:
option B
Explanation:
The correct answer is option B
Cells are the basic structural and functional unit of life and possess genes. These genes evolve to carry out new biological functions in the body.
Cells undergo division and growth whether it be unicellular organisms or multi cellular organisms.
All cells possess the property of compartmentalization and metabolism henceforth taking up nutritive material from the environment.
These nutrients are further transformed into the cell compartments and the waste produced as a result is expelled out thus forming on open system.
I think it’s “a Protein molecule”
This might represent evolution of a species or the influence of the environment on the expression of a genotype.
Answer: 1/4 (4 out of 16 offsprings express one of the two dominant alleles)
Explanation:
The dominant alleles are A and B
At the end of the cross AaBb x AaBb, 16 offsprings would result. They are as follows: AABB, AABb, AaBB, AaBb
AABb, AAbb, AaBb, AABB,
AaBB, AaBb, aaBB, aaBb,
AaBb, Aabb, aaBb, aabb.
Of all, only 4 offsprings (aaBb, aaBB, AAbb, Aabb) expresses one of the A or B. so 4/16 = 1/4
