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DochEvi [55]
3 years ago
7

The tiny exoskeleton of a diatom is composed mostly of calcium carbonate. a. True b. False

Biology
1 answer:
ivann1987 [24]3 years ago
5 0
False. Their exoskeletons are made of silica.
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Which process that occurs during meiosis contributes to a germ cell having unique genetic material?
Gennadij [26K]
I do believe that it is C. crossing over :) I hope that is correct, it seems like the only plausible answer. 
8 0
3 years ago
How could the notion of maximum parsimony lead to an error in establishing an evolutionary relationship
Grace [21]

Answer:

The notion of maximum parsimony does not consider the entire evolutionary history, being able to suppress important evolutionary points that would cause errors in the evolutionary relationship of a species.

Explanation:

Maximum parsimony is a criterion for optimizing phylogenetic trees. This is because through this criterion an analysis is made of all possible phylogenetic trees of a species, observing which one is smaller and offers simpler and summary information. On the one hand, the study of the smallest phylogenetic tree can be faster and more understandable, since its information is basic and direct. However, maximum parsimony can lead to errors in the establishment of an evolutionary relationship of a species, because it suppresses the entire history of evolution of that species, being able to suppress really important points in one of the clades, which would result in an incorrect evolutionary conclusion.

6 0
3 years ago
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Which form of virus did Sabin use for the vaccine?
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Answer:

   Oral poliovirus vaccine or Sabin vaccine, named for its inventor American physician and microbiologist Albert Sabin, was developed. OPV contains live attenuated (weakened) virus and is given orally.

3 0
3 years ago
If the parents are AABBCC X aabbcc, what would represent the parental gametes? Select all that apply
olga55 [171]
Take one gene at a time
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3 0
3 years ago
Which statements correctly describe mutations in gametes and mutations in somatic cells?
Cerrena [4.2K]

The mutation in the somatic cells is known as somatic mutations. As they do not take place in the cells, which give rise to gametes, thus, the mutation is not inherited to the next generation by the sexual means.  

On the other hand, the genetic mutations take place in the germline cells, that is, egg and sperm, because of this the mutations possesses the tendency to get passed on from one generation to another.  

Thus, mutations are only passed on to offspring when they take place in germ cell DNA. The other kind of cells, the somatic cells refers to the rest of the cells in the body and mutations, which takes place in these cells do not get inherited further to the offspring.  

Hence, the correct statements are mutations to gametes can be passed on to an organism's offspring and mutations to somatic cells are only present in the type of cell in which the mutation occurred.

6 0
3 years ago
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