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Dvinal [7]
3 years ago
14

A crustacean that remains in one place and produces a hard volcano-shaped structure for protection is called a

Biology
1 answer:
lutik1710 [3]3 years ago
4 0
I'm pretty sure it's a barnacle.
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How many teaspoons does it take to get 9 table spoons?
irakobra [83]

Answer:

c. 27

Explanation:

each tablespoon is equals 3 teaspoons

3×9=27

4 0
3 years ago
Read 2 more answers
What happens to E coli when lactose is not present
Annette [7]

Answer: the genes that produce the enzymes needed to break down lactose are not expressed

Explanation:

The lac operon is a series of genes used in digestion the sugar lactose. The operon is controlled by a promoter that regulates all of the genes

See full answer below.

3 0
3 years ago
Which of the four factors that affect evolution apply to the finches that the Grants studied?Use evidence from your research to
BARSIC [14]
The four factors that affect evolution are mutations, natural selection, genetic drift and the gene flow, In the case, if the ground finches that Grants studied, we can observe the working of the natural selection. Due to change in the conditions in the environment, the large beak was an advantageous trait that was favored by the natural selection. The result of this process was an increase in numbers of large beaked finches and decrease in small-beaked finches compared to the initial numbers in the population.
6 0
3 years ago
In animals, the inability to make the pigment melanin results in albinism, a recessive autosomal condition. Two unaffected paren
Fittoniya [83]

Answer: 1/16, or approximately 6.25% (see explanation below)

Explanation:

Answering this question requires two steps.

First, we need to figure out the probability that this couple will have a child with albinism in the first place. We know the following:

- Both parents are unaffected.

- The couple has already had one affected child.

- Albinism follows an autosomal recessive inheritance pattern.

Let ( M = normal gene ) and ( m = mutated gene ). Since the condition is recessive, the affected child can be assumed to have a “mm” genotype. Barring the possibility of a de novo mutation (which are assumed to be rare), the affected child must have inherited one ”m” allele from each parent. Since both of them are unaffected, however, we can assume that they are both carriers (genotype “Mm”). In conclusion, 1/4 of their offspring (25%) <em>for any given pregnancy</em> may be expected to have albinism. See the resulting Punnett square:

<u>       |      M    |      m   </u>

<u>M    |    MM   |    Mm  </u>

<u>m    |    Mm   |    mm  </u>

Note that the question asks about the probability that not one but two consecutive births result in affected children. Since it can be assumed that both events are independent (meaning: the outcome of a pregnancy does not influence the outcome of following ones), we may apply the rule of multiplication for probabilities. The final answer is therefore 1/4 * 1/4 = 1/16.

7 0
3 years ago
Three advantages of Biodiversity in an ecosystem?
beks73 [17]
It increases ecosystem productivity, protects fresh water resources, and provides nutrient storage and recycling
3 0
3 years ago
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