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lana [24]
2 years ago
7

The term 'phytoplankton' describes microbial free floating primary producers in aquatic systems. The organisms that can form phy

toplankton are quizlet
Biology
1 answer:
Afina-wow [57]2 years ago
6 0

Among the more important groups are the diatoms, cyanobacteria, dinoflagellates and coccolithophores.

Phytoplankton, are autotrophic prokaryotic or eukaryotic algae that live near the water surface where there is sufficient light to support photosynthesis.

<h3>What are Phytoplankton ?</h3>

Phytoplankton is made of very tiny--usually one-celled--plants. Since plants make their own food and release oxygen as a byproduct, all the other living things in the ocean depend on them directly or indirectly for food or oxygen.

  • The two main classes of phytoplankton are dinoflagellates and diatoms.

  • Dinoflagellates use a whip-like tail, or flagella, to move through the water and their bodies are covered with complex shells.

Learn more about Phytoplankton here:

brainly.com/question/1597611

#SPJ4

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Normally, this region is imprinted in the sperm, but not the egg. This means that the DNA on the ____________ copy of the chromo
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Answer: The DNA on the paternal copy of the chromosome will be methylated at the imprinting center, while the DNA on the maternal copy of the chromosome will not be methylated in this region.

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Chromosomes are DNA structures associated with proteins such as histones. They are found in the nucleus of cells and contain genetic information for the development and functioning of an organism. Human beings are diploid, meaning that they possess two copies of each of the 23 chromosomes (a total of 46).

Gametes, which are sex cells such as the sperm (produced by the male) and the egg (produced by the female) that are haploid. This means that they possess only one chromosome of each pair. During fertilization, a male gamete fuses with a female gamete to generate a zygote, which will give rise to a new human being. <u>This new individual will possess half of the genetic material from its father and half from its mother. Thus having a total of 46 chromosomes, 23 from each parent</u>.

Genetic imprinting modulates gene expression by chemical modification of DNA and/or modification of chromatin structure. Often, genetic imprinting causes a gene to be expressed only on the chromosome inherited from one of the parents. One example of imprinting is DNA methylation, which is a process by which methyl groups are added to DNA. <u>Methylation modifies DNA function when found in the promoter gene, repressing gene transcription. This means that a methylated gene will not be expressed</u>, that is, it will not produce a protein encoded by that gene. So, if a region of DNA is imprinted in the sperm cell, the paternal chromosome inherited from this sperm will be methylated in the genes of the offspring. And the offspring will only express the maternal copy inherited, which will not be methylated.

6 0
3 years ago
If an organism has a hapoloid chromosome of 8 which of the following is the organism diploid chromosomes and why
ivann1987 [24]

Answer:

if I remember right, a diploid is twice the amount of a haploid because diplood are pair chromosomes. So if there is 8 haploid there will be 16 diploid.

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To find the diploid put the n of 2n.

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