Answer:
They are important areas where oxygen can pass through to the developing brain in infancy
Explanation:
Fontanel is a structure that is present in the skull of human infants and it compromises of soft membranous gaps known as sutures.
The function of the fontanels is as follows:
1. To allow stretching of the neurocranium and also allow its deformation during the rapid expansion of the brain.
2. To flex the skull of the infant so that it can easily pass through the birth canal at the time of delivery.
There are 6 fontanels present in the brain -
A. Present at the sides of the head.
B. The anterior fontanel.
C. The posterior fontanel.
D. lateral fontanels.
At first the cells have the same number of chromosomes as mitosis. DNA replication occurs, giving a total of 46<span> chromosomes (or </span>23<span> chromosome pairs) and </span>92 chromatids<span> (or </span>46 chromatid<span> pairs).</span>
1. It helps break down starch
2. It helps with chewing/swallowing
3. It helps you speak more smoothly because it moisturizes the inside of your mouth.
4. Dissolves food
5. It helps fight against pathogens
6. washes away debris and bacteria in mouth
7. Supplies certain minerals to teeth.<span />
Answer:
If an individual has a dominant phenotype it is not known what the exact genotype is. For example with the phenotype of brown eye color , the genotype could be heterozygous.
Explanation:
Dominant is a trait that shows dominance over a recessive trait. The dominant trait might have a heterozygous or homozygous genotype.
For example, if the brown eye is a dominant phenotype, it might be that a person might have a heterozygous genotype for this trait. One of the alleles might be the dominant one while the other allele might be recessive. In such a case, the effect of the recessive trait is masked by the dominant trait. Hence, the organism shows the dominant phenotype but has a heterozygous genotype.
