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3 years ago

Which conditions describe the neritic zone? check all that apply

Biology

1 answer:

klio [65]3 years ago

4 0

Answer:

ample sunlight

steady nutrient supply

Explanation:

Neritic zine is the shallow end of deep water bodies.

This end receives stable temperatures of about 24 degrees celsius.

This area permits photosynthesis since light penetrates to the bottom, this is the reason why planktonic plants survive here.

The region has got steady salinity and because of its favourable nature, it has got many living organisms.

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Which enzyme is mixed with a DNA sample before gel electrophoresis

Svetach [21]

Answer:

Restriction enzyme

Explanation:

Gel electrophoresis is a process or a technique in which fragments of DNA are separated in terms of their sizes.
The restriction enzyme is mixed with a DNA sample before the process. The restriction enzyme cut DNA at specific points into fragments which can then be separated based on their sizes on an agarose gel.
When current is applied to the gel DNA move towards the positively charged electrode since DNA is negatively charged, with shorter fragments migrating faster through the gel in comparison with large fragments.

4 0

3 years ago

Which phrase best explains the term gene expression?

xenn [34]

What are the phrase options ??

5 0

3 years ago

What is the function of Nucleic Acids?

Tanya [424]

They contain genetic information and assist in making proteins

8 0

3 years ago

In a unique species of plants, flowers may be yellow, blue, red, or mauve. All colors may be true-breeding. If plants with blue

Zolol [24]

Answer:

F1) 100% bbRr, red flowered plants.

Explanation:

Available data:

flowers may be yellow, blue, red, or mauve
colors may be true-breeding
the cross of blue-flowered plants with red-flowered plants, produce plants that have yellow flowers
F2 generation: 9/16 yellow, 3/16 blue, 3/16 red, and 1/16 mauve.

Knowing that the phenotypic ratio is 9:3:3:1, we can assume that there are two genes involved in the flower color expression. We can name these genes B and R with a dominant and a recessive allele each (B, b and R, r respectively).

According to the first cross, we might establish the following genotypes:

1st Cross: blue-flowered plant x red-flowered plant

Parentals) BBrr x bbRR

Gametes) Br, Br, Br, Br bR, bR, bR, bR

F1) 100% BbRr, yellow plants

Parentals) BbRr x BbRr

Gametes) BR, Br, bR, br

BR, Br, bR, br

Punnett square) BR Br bR br

BR BBRR BBRr BbRR BbRr

Br BBRr BBrr BbRr Bbrr

bR BbRR BbRr bbRR bbRr

br BbRr Bbrr bbRr bbrr

F2) 9/16 yellow ---> 1/16 BBRR + 2/16 BBRr + 4/16 BbRr + 2/16 BbRR

3/16 blue ------> 1/16 BBrr + 2/16 Bbrr

3/16 red---------> 1/16 bbRR + 2/16 bbRr

1/16 mauve ----> 1/16 bbrr

So,

Yellow-flowered plants: BBRR, BBRr, BbRR, BbRr
Red-flowered plants: bbRR, bbRr
Blue-flowered plants: BBrr, Bbrr
Mauve-flowered plants: bbrr

According to these genotypes, the second cross would be like following,

2nd Cross: true-breeding red-flowered plants with true-breeding mauve flowered plants.

Parentals) bbRR x bbrr

Phenotype) Red Mauve

Gametes) bR, bR, bR, bR br, br, br, br

Punnett square) bR bR bR bR

br bbRr bbRr bbRr bbRr

F1) 100% bbRr, red flowered plants.

6 0

3 years ago

A high school student asks you, "What's the big deal about using pot? How can it hurt me?" The MOST accurate reply you could mak

Juli2301 [7.4K]

Answer:

D. "Even a moderate dose of THC can produce perceptual distortions and coma"

8 0

3 years ago