Answer:
Cast fossils occur when mold fossils are filled in with minerals that harden over time, creating a fossilized replica of the original organism. Water seeps through the rock surrounding the mold fossil, leaving behind minerals which fill the mold. Any mold fossil can potentially form a cast mold.
Explanation:
The mother's genotype can be either 
or 
.
For X-linked recessive traits, males (XY) can either be affected or free from the disorder, they cannot be carriers. Females (XX), on the other hand, can be affected, unaffected, or be carriers.
The circled male child is free from the disorder (
) while the females are carriers ().
The male inherited the healthy allele, 
, from the mother.
The female children inherit the affected allele from their father (who is affected for the disorder) and the other healthy allele from their mother.
This means that the mother cannot be affected for the disease. As it is, the pedigree points that all the children got their healthy alleles from their mother. This does not mean the mother has two healthy alleles though.
Thus, the possible genotype of the mother are and .
More on pedigrees can be found here: brainly.com/question/2952835?referrer=searchResults
The link where the action
potential of the nerve that meets muscle and causes it to contraction is where excitation-contraction coupling occurs. The T_tubules the
invaginate into the sarcolemma of the muscle cells are the ones that carry the excitation into the muscles. Its depolarization
causes the lateral sacs of the sarcoplasmic reticulum to release ca2+
ions. The ca2+ then bind into their site on troponin and causes the tropomyosin to shift and allow actin to expose
the binding site in which myosin head
will bind and form a cross bridge that is
important in the contraction of the muscle.
Carbohydrate monomer because it’s glucose which is a sugar
Most efforts to identify interhemispheric differences in brain anatomy have focused on the size of three areas of cortex that are important for language, namely: the planum temporale, the frontal operculum, and Heschl's gyrus.
One distinguishing feature of the way the human brain is organised is hemispheric specialisation, often known as cerebral dominance or lateralization of function. The Sylvian fissure's cortical region directly behind the auditory cortex (Heschl's gyrus) is known as the planum temporale.
Wernicke's area, one of the most significant functional areas for language, is centred in a triangle zone. The area of the frontal lobe that, in primates, covers the rostrodorsal region of the insula is known as the frontal operculum.
Therefore, three areas of cortex that are important for language are: the planum temporale, the frontal operculum, and Heschl's gyrus.
Learn more about frontal operculum here;
brainly.com/question/14925481
#SPJ4
