In humans, the cranial cranium (dominant) is long recessive. The presence of a gap between the incisors

In humans, the cranial cranium (dominant) is long recessive. The presence of a gap between the incisors (dominant), the absence of a gap (recessive). What is the probability of having a child with a long skull and without a gap between the teeth from a diheterozygous man and a heterozygous woman with a cranial cortex and without a gap between the teeth …

Let’s designate the gene for the short skull as B, and the gene for the long skull as b.
Let us designate the gene that causes the presence of a gap between the incisors as C, and the gene that causes the absence of such a gap as c.
A man, according to the condition, is diheterozygous – BBCc. It has a short skull and a gap between the incisors. It produces four types of sperm – вс, ВС, вС Вс.
A woman who is heterozygous for the gene for the length of the skull and does not have a gap between the incisors – Ввсс. It produces two types of eggs – Вс  вс.
All the offspring expected from this married couple will look like this:
children with a short skull and a gap between the incisors (ВВСс, 2ВвСс);
children with a short skull without a gap between the incisors (2Ввсс, ВВсс);
children with an elongated skull without a gap between the incisors (ввсс);
children with an elongated skull and a gap between the incisors (ввСс).
A child with a short skull and no slit – 3 genotypes out of 8, or 37.5%.
Answer: 37.5%.