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Rashid [163]
3 years ago
5

Biology multiple choice

Biology
2 answers:
Nezavi [6.7K]3 years ago
8 0

Answer:a or d

Explanation:

scZoUnD [109]3 years ago
6 0

Answer:

The answer is C, ligases.

Explanation:

The ligase chain reaction (LCR) is a method of DNA amplification. The ligase chain reaction (LCR) is an amplification process that differs from PCR in that it involves a thermostable ligase to join two probes or other molecules together which can then be amplified by standard PCR cycling (Barany, 1991).

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How does fecal coliform get into the water
vovangra [49]

Answer:

The presence of fecal coliform in aquatic environments may indicate that the water has been contaminated with the fecal material of humans or other animals. Fecal coliform bacteria can enter rivers through direct discharge of waste from mammals and birds, from agricultural and storm runoff, and from human sewage.

Explanation:

5 0
3 years ago
Read 2 more answers
In a plant called jimsonweed, flowers can be white or purple. A jimsonweed plant with white flowers is crossed with a jimsonweed
STALIN [3.7K]

<u>Answer:</u>

Although statements are not given in the question, we could make the most possible deduction as follows:

The allele for purple flowers is dominant whereas allele for white flowers is recessive.

<u>Explanation:</u>

According to the question,

  1. Purple flower plant was crossed with white flower plant.
  2. All offsprings have purple flowers.

Here we have one possibility that both parents were homozygous but in their own traits. <u>Purple flower</u> plants were "PP" and white <u>flower plants</u> were "pp" So, the <u>first progeny</u> (direct offsprings) would have "Pp". So, as per considerations, purple is dominant allele which will mask the recessive allele thus defining the color of all offsprings as purple. However, further cross of their generation will definitely end up into purple and white flowers (3:1) but this condition is not mentioned in the statement.

8 0
3 years ago
An incomplete diagram of the rock cycle is shown below. Use the labels to correctly complete the diagram.
Afina-wow [57]

it goes sedimentary rock to metamorphic is heat and pressure

then metamorphic to magma is melting and magma to igneous rock is crystallization

Thats all i got

4 0
3 years ago
Read 2 more answers
What are pontential impacts of pollution on a watershed
garri49 [273]

Answer:

Aquatic life quickly suffers the effects of watershed pollution, while new pollutants introduced into ecosystems alter wildlife habitats. This reduces biodiversity by eliminating some species and introducing new, invasive ones that destroy the native species.

Explanation:

5 0
3 years ago
Why is reproductive isolation required for speciation to occur?
Anarel [89]

Answer:

a

Explanation:

If populations can interbreed, they are considered one species.

4 0
3 years ago
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