Two heterozygous parents ( $T t \times T t$ ) have a child. What is the probability that the child is homozygous recessive?

Practise more Inheritance.

Free questions with an explanation for every one, and full timed ESAT (Engineering and Science Admissions Test) mock tests.

All Inheritance questions Take a mock test

More Inheritance questions

In pea plants, $A$ (tall) is dominant to $a$ (dwarf) and $B$ (purple) is dominant to $b$ (white). Two plants of genotype $A a B b$ are crossed.…
Blood group is controlled by alleles $I^{A}$ and $I^{B}$ (codominant) and $i$ (recessive). A mother of genotype $I^{A} i$ and a father of genotype…
Two unaffected parents have an affected child. What does this suggest about the condition?
A gene has two alleles. In a cross, the offspring show a $9 : 3 : 3 : 1$ phenotypic ratio. What does this ratio indicate?
A test cross of $AaBb\times aabb$ gives offspring in the ratio $42 A a B b : 8 A abb : 8 aa B b : 42 aabb$ . What is the recombination frequency betw…
Allele frequencies in a population in Hardy-Weinberg equilibrium are $p = 0.7$ and $q = 0.3$ . In a population of $1000$ individuals, how many ar…