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xeze [42]
3 years ago
13

What is d inner layer of a mollusca shell called?

Biology
1 answer:
Sedaia [141]3 years ago
7 0
This is called the nacreous layer, the pearly layer.
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You spot a sea snake while you are in a boat on the Atlantic Ocean and remark about how similar it looks to a snake that lives i
lukranit [14]

Answer:

c) Habitat isolation

Explanation:

Habitat isolation is a mechanism that prevents species from mating even if they don't have reproductive barriers. The differences in the habitat types may thus be sufficient to develop reproductive isolation between two (or more) populations

4 0
3 years ago
The genes dumpy (dp), clot (cl), and apterous (ap) are linked on chromosome II of Drosophila. In a series of two-point mapping c
Dmitrij [34]

Answer:

The order of genes is- dp-cl-ap

Explanation:

The genes a be mapped on chromosome on the basis of the recombination frequency as the recombination shows that is the genes are linked or not.  In genetic mapping, 1 per cent recombination frequency is considered as 1 cM or map distance.

In the given question, the three gene distance are provided on the basis of which the gene can be mapped in the following manner:

1. Take the higher value of gene distance that is 42 m.u and plot them on the line,

2. now place second-highest value on the line that is 39 m.u.

3. The gene will be arranged in the order of dp-cl-ap.

4. dp--³---cl-----------³⁹---------------------ap.

Thus, dp-cl-ap is correct.

6 0
3 years ago
Why do sex-linked traits follow different patterns of inheritance than other traits?
ANEK [815]

Answer:

I think option (C) is right answer

7 0
3 years ago
Read 2 more answers
What do you call an organism that lives in or on another organism and feeds on that other organism
goldfiish [28.3K]
The host. have a good day!!
7 0
3 years ago
What does pH measure?
kogti [31]

Answer: Answer below

Explanation: pH is a measure  of the acidity or alkalinity of a solution. What the pH scale measures is basically the concentration of hydrogen and hydroxyl atoms in a solution. So, the last option is the answer. Another thing to keep in mind is solutions with a pH under 7 are acidic, solutions with a pH of 7 are neutral, and solutions with a pH over 7 are alkaline or considered a base. I hope this helped! Good luck:)

7 0
3 years ago
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