Answer:
Explanation:
The abundance of volcanoes and earthquakes along the Ring of Fire is caused by the amount of movement of tectonic plates in the area. Along much of the Ring of Fire, plates overlap at convergent boundaries called subduction zones. As rock is subducted, it melts and becomes magma
b. saturated lipid
c. nitrogenous base
d. deoxyribose sugar
The coiling direction of the snail shell is affected by the maternal genes. All the offspring have left-coiled shells, as the phenotype is determined by the mother's genotype. Thus, option C is correct.
Maternal inheritance has been defined as the effect by which the genes are influenced by the mother's genotype and are a type of non-Mendelian inheritance.
The dextral and the sinistral coiling seen in the snails showing the maternal effect is influenced by the genotype of the mother and is not affected by the father's genotype.
The mother has the cc and the father has the CC genes that when crossed are shown in the image.
From the cross, it is evident that the genotype of the mother snail affects and influences the genotype of the offspring, and hence all the offspring's have the left coiling (sinistral).
Therefore, in option C, the genotype of the mother snail affects the coiling.
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Your question is incomplete, but most probably your full question was,
All of the offspring have shells that coil to the left. Why do all of the offspring have left-coiled shells?
A. This trait follows a typical Mendelian pattern of inheritance.
B. Only the father's genotype determines the phenotype for shell coiling.
C. Only the mother's genotype determines the phenotype for shell coiling.
D. Shell-coiling is a sex-linked trait.
The main difference between protostomes and deuterostomes is the sequence in which the mouth and anus develop during embryonic development. Protostomes develop a mouth first, and deuterostomes form an anus first.
The primary difference between protostomes and deuterostomes lies in the sequence of their embryonic development.
Protostomes, which include organisms like insects and mollusks, follow a developmental sequence where the first opening in the embryo becomes the mouth, and the second becomes the anus.
On the other hand, deuterostomes, including organisms like vertebrates and echinoderms, have a developmental sequence where the first opening becomes the anus, and the second becomes the mouth.
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There is a partial mixing of oxygen-rich and oxygen-poor blood.
There is no mixing of oxygen-rich and oxygen-poor blood.
There is a complete mixing of oxygen-rich and oxygen-poor blood.
Answer:
There is no mixing of oxygen-rich and oxygen-poor blood.
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The right atrium and right ventricle of the human heart pump oxygen-poor blood to the lungs and the left atrium receives oxygen-rich blood. They never mix.