If T is a genetic trait for tallness, and its allele, t, is recessive for tallness, and the four children of Paul and Paula have alleles TT, tT, Tt, and tt, how many of these children will be tall?
a.1
b. 2
c. 3
d. 4
I think it's "C"
correct. tt will be short.
I am a little confused by the way your question is phrased. If both T and t are for "tallness," then all of the children will be tall.
If T is for normal height and t is for tallness, then only the tt genotype would be tall.
If t is for normal height and T is for tallness, 3/4 of the children will tall. If this is what you meant with your problem, then bobpursley's answer is right.
I hope this will help a little more. Thanks for asking.
To determine how many of the children will be tall, we need to understand the inheritance patterns of the trait.
In this case, the allele T is dominant for tallness, while the allele t is recessive for tallness.
The genotype TT represents a homozygous dominant individual (which means both alleles are T), and the individual will be tall.
The genotype tT represents a heterozygous individual (one allele is T and the other is t), and since T is dominant, the individual will still be tall.
The genotype Tt also represents a heterozygous individual (one allele is T and the other is t), and again, the individual will be tall because T is dominant.
The genotype tt represents a homozygous recessive individual (both alleles are t), and in this case, the individual will not be tall.
Based on the given information, three out of the four children have either the genotype TT, tT, or Tt, which means they will be tall.
Therefore, the correct answer is c. 3.