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iragen [17]
2 years ago
10

21.__________can be caused by a variety of alterations in DNA. Give some examples.

Biology
1 answer:
iris [78.8K]2 years ago
3 0
MUTATIONS can be caused by a variety of alterations in DNA. Examples: there are 3 types of DNA mutations which are base substitutions, deletions, and insertions.
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1 Do hot-spot volcanoes form plate boundaries or intenor of tectonic plates?
aivan3 [116]

Answer: A mantle plume is an area under the rocky outer layer of Earth, called the crust, where magma is hotter than surrounding magma. ... While most volcanoes form along tectonic plate boundaries, mantle plumes and hot spots lead to their development as well. Hot spot volcanoes occur far from plate boundaries.

Explanation:

8 0
3 years ago
In humans having a wide jaw (W) is completely dominant to having a narrow jaw (w). Having large teeth (L) is completely dominant
Orlov [11]

Answer: The man's genotype is WwLt while the woman's genotype is wwLt.

Explanation: From the information given above, W is the allele for wide jaw, w is the allele for narrow jaw, W is completely dominant to w, L is the allele for large teeth while t is the allele for small teeth.

The man has wide jaw but his mother has a narrow jaw, since narrow jaw is recessive the man must have inherited one recessive allele for narrow jaw from his mother who has two recessive alleles for narrow jaw. Therefore since the man has wide jaw, he must be heterozygous for wide jaw (having one dominant allele for wide jaw and one recessive allele for narrow jaw), his genotype for wide jaw is therefore Ww. The man is heterozygous for teeth size, this means that he has one dominant allele for large teeth and one recessive allele for small teeth. His genotype for teeth size is Lt. Therefore the man's genotype is WwLt.

The woman has a narrow jaw, this means that she has two recessive alleles for narrow jaw (ww) and she is heterozygous for large teeth size, this means that she has one dominant allele for large teeth and one recessive allele for small teeth (Lt). Therefore, the woman's genotype is wwLt.

5 0
3 years ago
The data indicate the populations of mammals in the Florida Everglades in different years over the past two decades. The Burmese
Oduvanchick [21]

Answer:

The correct hypothesis would be - C) Burmese pythons lack natural predators and can utilize a wide variety of food sources in the Everglades.

Explanation:

Burmese pythons are the invasive species in this new region as they originally found in South Africa, and also one of the largest snakes so they lack natural predators in this new setting or region.

These snakes depend on both types of food which means they are omnivorous and eat both herbivore and carnivores prey.

Thus, the correct answer is - Burmese pythons lack natural predators and can utilize a wide variety of food sources in the Everglades.

8 0
3 years ago
Which type of transposition is believed to be responsible for creating processed pseudogenes in vertebrate organisms?a. DNA tran
rusak2 [61]

Answer:

D. LINE-promoted transposition.

Explanation:

Pseudogenes are traditionally defined as sequences that closely resemble known genes but do not produce a functional protein, which in many cases were actually genes, or copies of genes, degenerated by mutational processes that alter the reading frame of coding regions (ie that encode the amino acid sequence) or that interfered with the promoter elements that controlled their expression.

Pseudogenes originate by the same mechanisms as protein coding genes, followed by the subsequent accumulation of disabling mutations (e.g., insertions, nucleotide deletions, and / or substitutions) that disrupt the reading sequence in the coding regions, or lead to the insertion of a premature termination codon or the aforementioned reading frame change. However, it is believed that the transposition promoted by LINE is the main transposition responsible for the appearance of pseudogenes.

7 0
3 years ago
Which is the main function of the respiratory system?
kifflom [539]
D. To help oxygen get into blood vessels



5 0
3 years ago
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