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Anettt [7]
3 years ago
11

Oocasionally, DNA evidence is thrown out of court due to the sample being contaminated.

Biology
1 answer:
Nat2105 [25]3 years ago
7 0

Answer: sneezing or coughing over the evidence, direct sunlight on transport an storage

Explanation:

DNA evidence is contaminated when DNA from an outside source (exogenous DNA) gets mixed with DNA relevant to the case. It can happen in a variety of ways, from someone sneezing or coughing over the evidence,

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Why does a pea plant with the genotype Rr produce some gametes that have the allele for round seeds?
Amiraneli [1.4K]

Answer:

The correct answer is - due to the law of segregation.

Explanation:

In the given case the genotype of Rr and as we know R is a dominant characteristic for round seeds and r represents the recessive allele for wrinkled seeds in a pea plant. So if a plant has Rr in its genotype it means it is a phenotypically round pea plant due to dominance in this heterozygous case.

The law of segregation states that two alleles of a gene of a specific trait will be distributed randomly and there is an equal chance of each allele to end up in the gametes, similarly in this case both alleles can be segregated to gametes and it is a random process.

3 0
3 years ago
What did Primitive anaerobic prokaryotic cells did not contain
yanalaym [24]
Anything prokaryotic doesn't contain a nucleus
8 0
3 years ago
Read 2 more answers
Which two pieces of data indicate that Uranus resides in the outer region of the solar system?
dimaraw [331]

It is D & E. Uranus is Helium & Hydrogen, And it has dark rings

6 0
3 years ago
This part is used to bring the specimen into sharp focus. This part causes a very small up and down motion when used.
Mekhanik [1.2K]

Answer:

Fine focus.

Explanation:

If you're referencing a microscope, then it would be fine focus. Coarse focus is a basic focus used to properly see a specimen, while fine focus enhance clarity and precision. To use both, you have to gently twist a knob until you can see the specimen at a desired clarity.

Here's a reference image if you need it, it's labeled all the parts of a microscope.

6 0
3 years ago
What is incomplete dominance?
Tresset [83]
The appropriate answer is D ! in this the dominant allele is not fully dominant ! this is seen in Snapdragon !

so answer is D
7 0
3 years ago
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