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GuDViN [60]
3 years ago
13

What is the difference between mitosis and meiosis? A. Mitosis produces 2 genetically unique haploid cells, while meiosis produc

es 4 genetically unique haploid cells. B. Mitosis produces 4 genetically identical diploid cells, while meiosis produces 2 genetically unique haploid cells. C. Mitosis produces 2 genetically identical diploid cells, while meiosis produces 4 genetically unique haploid cells. D. Mitosis produces 4 genetically identical diploid cells, while meiosis produces 2 genetically identical diploid cells.
Biology
1 answer:
AleksAgata [21]3 years ago
8 0
The correct answer is C. Mitosis produces 2 genetically identical diploid cells, while meiosis produces 4 genetically unique haploid cells.

Mitosis is where a parent cell duplicates its genetic information before dividing into 2, therefore, the daughter cells from mitosis are completely identical to their parent cell and the other daughter cell, and we call the cells which has complete genetic information as diploid. Mitosis is very useful in repairing, growth, asexual reproduction etc.

Meanwhile, meiosis involves 2 times of division. The parent cell first duplicates its genetic information, but then swapping them, and divide. 2 new cells are produced. Then these 2 cells are further divided but without duplicating the genetic material. Therefore, this results in 4 genetically different cells. We call them haploid, as they only have half of the chromosomes from their parent, which is the opposite of diploid. Meiosis is important in producing sex cells.
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Draw a pyramid of energy to show how energy flows through the antarctic food web. Use
GuDViN [60]

Answer:

The desired graph of the Antarctic food web is attached:

Explanation:

A food web shows the taking care of connections between the life forms in a specific biological system, fundamentally what eats what. It shows how vitality courses through the biological system. Creatures can be separated into producers, different level of consumers, and decomposers inside a food web:  

producers in the Antarctic marine biological system are: ocean ice green growth, phytoplankton, macroalgae, microalgae

primary, second-level, third level, fourth level, and fifth-degree of consumers are straightforwardly or by implication rely upon producers as they structure a significant food hotspot for creatures that feed by grazing. Models incorporate snails, imps, and corals. These consumers thusly will be eaten by different creatures, for example, ocean stars. At the head of the food web, there are bigger consumers, for example, fish, penguins, and seals. energy moves from producers to the consumers and there is a large part of the energy loss during the process only 10% of energy gets to the subsequent trophic level.

3 0
3 years ago
Pedigrees are used to help geneticists understand how traits are inherited between generations. The Romanovs, a Russian royal fa
inysia [295]

Answer:

Waldemar carried the recessive allele.

Explanation:

The carrier is the individual that has the affected allele or mutation but does not express the trait, or might express it in different levels. Although, as the person carries the mutation, she or he might transmit the genetic mutation associated with a disease to the progeny.  In general, these diseases are inherited as recessive traits.

So, in the exposed example we know that:

  • hemophilia is a sex-linked disorder
  • hemophilia is determined by a recessive allele on the X chromosome.
  • Irene is a carrier.
  • Her husband is not a carrier.
  • Her children Waldemar and Henry have hemophilia.

If Irene is a carrier, this means that she is heterozygous and that her genotype is X⁺X⁻ (Being the symbol + the dominant allele, and - the recessive one for that expresses the trait)

The fact that Irene´s husband is not a carrier means that his genotype is X⁺Y

Their boys Waldemar and Henry have hemophilia, so both their genotypes are X⁻Y

The best evidence to prove that Irene was heterozygous for hemophilia is that Alice carried the recessive allele.

  • Alice is Irene´s Mother, and she is a carrier as well. Irene´s father, Louis, is not a carrier, so she could have inherited a dominant allele from her father and a recessive allele from her mother, X⁺X⁻, or she could have inherited two dominant alleles from both her parents X⁺X⁺. This is not proof enough of Irene being heterozygous.
  • The fact that Alexandra, Irene´s sister, was also a carrier does not say anything about Irene´s genotype, because they could both share the same genotype or not. This is not proof of Irene being heterozygous.
  • Frederick (her brother) was hemophilic.  He received a recessive allele from Alice, but this does not say anything about Irene´s genotype.  
  • The fact that Waldemar (her son) was hemophilic, is the best evidence to prove that Irene was heterozygous for hemophilia. Walderman received the Y chromosome from his father and an X chromosome from his mother. The X chromosome that he received from his mother carried the recessive allele for the trait, and this is why he had hemophilia. This means that there is no best evidence for Irene´s genotype than her son´s genotype.

 

6 0
3 years ago
Plant growth and production of flowers are processes that are driven by?
k0ka [10]

Answer:

I think it is C but I'm not 100% sure

6 0
3 years ago
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What are the 3 types of RNA?
Tatiana [17]

mRNA or Messenger RNA
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rRNA is located in the cytoplasm of a cell, where ribosomes are found. rRNA directs the translation of mRNA into proteins.</span><span>tRNA or Transfer RNA
Like rRNA, tRNA is located in the cellular cytoplasm and is involved in protein synthesis. Transfer RNA brings or transfers amino acids to the ribosome that correspond to each three-nucleotide codon of rRNA. The amino acids then can be joined together and processed to make polypeptides and proteins</span>

<span>
</span>

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3 years ago
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The minimal amount of nutrients needed every day by healthy people to prevent nutrient deficiencies is called the
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<span>The minimal amount of nutrients needed every day by healthy people to prevent nutrient deficiencies is called the RDA.
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