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tatuchka [14]
3 years ago
7

During DNA replication, two extra guanine bases are added to the DNA. What type of mutation is this? A. Nondisjunction mutation

B. Silent mutation C. Point mutation D. Frameshift mutation
Biology
1 answer:
MissTica3 years ago
5 0

Answer:

A mutation, which may arise during replication and/or recombination, is a permanent change in the nucleotide sequence of DNA. Damaged DNA can be mutated either by substitution, deletion or insertion of base pairs. Mutations, for the most part, are harmless except when they lead to cell death or tumor formation. Because of the lethal potential of DNA mutations cells have evolved mechanisms for repairing damaged DNA.

Types of Mutations

There are three types of DNA Mutations: base substitutions, deletions and insertions.

1. Base Substitutions

Single base substitutions are called point mutations, recall the point mutation Glu -----> Val which causes sickle-cell disease. Point mutations are the most common type of mutation and there are two types.

Transition: this occurs when a purine is substituted with another purine or when a pyrimidine is substituted with another pyrimidine.

Transversion: when a purine is substituted for a pyrimidine or a pyrimidine replaces a purine.

Explanation:

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1. Zygomycetes reproduce asexually through the haploid spores formed in , or sexually through diploid nuclei formed in .
g100num [7]

Answer:

  1. sporangia , zygospore
  2. Basidiomycota
  3. hyphae, mycellium
  4. lichen
  5. mycorrhiza
  6. Ascomycota

Explanation:

1. Zygomycetes reproduce asexually through the haploid spores formed in sporangia, or sexually through diploid nuclei formed in zygospore.

2. Basidiomycota are called club fungi because they produce club-shaped reproductive structures like toadstools.

3. The vegetative body of most fungi is called a hyphae, which consists of an interwoven mass of threadlike filaments called mycelium.

4.  A lichen is a symbiotic association between a fungus and a single-celled alga or cyanobacteria. The fungus protects the photosynthesizer from harsh conditions while consuming the extra nutrients it produces.

5. A mycorrhiza is a symbiotic association between a fungus and the roots of a plant. The fungus receives energy-rich sugar molecules produced by the plant while passing minerals and nutrients from the soil to the root.

6. Ascomycota, also known as sac fungi, include morels, yeasts, and the species that produces penicillin.

5 0
3 years ago
Both a shot of whiskey and a bite of chocolate can produce what feel good chemical in the brain?.
iogann1982 [59]

Both a shot of whiskey and a bite of chocolate can produce Dopamine feel good chemical in the brain.

What does dopamine do to a person?

Dopamine is accountable for permitting you to sense pleasure and motivation. When you sense precise which, you have accomplished something, it is due to the fact you've got a surge of dopamine withinside the brain.

What feelings does dopamine control?

Dopamine is basically related with emotions of pleasure, which includes the pride a person can also additionally sense from reaching a goal. It is likewise worried in emotions of motivation, sleep, attention, and memory, in addition to being vital in movement.

To know more about Dopamine, click here- brainly.com/question/24803971

#SPJ4

3 0
1 year ago
Organisms are able to reproduce either sexually or asexually. Which of the following statements is true of these reproductive pr
alisha [4.7K]
The sorting of genes during sexual reproduction results in a large amount of genetic variation.because the primary advantage sexual reproduction has against asexual reproduction because of genetic diversity
B is the right option
hope this helps
4 0
3 years ago
Which process helps gas exchange to occur?
zavuch27 [327]
Hello Pgoodrichstat!

The process that helps gas exchange occur is called diffusion.

Cheers!
-Blizzard
8 0
3 years ago
Read 2 more answers
What is the Hepatic Portal Vein?​
belka [17]

Answer: The hepatic portal vein is one of the most important vein that receives blood from the body and transports it into the liver for filtration and processing. This vein is part of the hepatic portal system that receives all of the blood draining from the abdominal digestive tract, as well as from the pancreas, gallbladder, and spleen.

‘Hepatic’ means of or relating to the liver, therefore the hepatic portal vein is a blood vessel that sends nutrient-rich blood from the gastrointestinal tract and spleen to the liver, but also delivers toxins to the liver that will be chemically modified in the proces of detoxication

8 0
3 years ago
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