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Zina [86]
3 years ago
13

Gems called rubies are used in lasers. Please select the best answer from the choices provided

Biology
1 answer:
NISA [10]3 years ago
8 0
????????????????????? How are we meant to answer this
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The sea dog francis drake sailed along the coast of _______
PilotLPTM [1.2K]

Answer: West African Coast

Explanation:Hawkins sailed with his cousin (and soon-to-be Sea Dog) Francis Drake to the West African coast in order to capture slaves for trade in the Caribbean and South America, privateering along the way.

6 0
2 years ago
1) Which of the following explains why a bone in a bird's wing is homologous to a bone in a lizards leg? A) The bones in the two
dangina [55]

Answer:

<em><u>The correct option is D) The two species have a common ancestor</u></em>

Explanation:

In evolutionary studies, homologous structures can be described as structures which are similar in organisms of different species because they had a common ancestor in the past. These structures may not perform the same function but are similar because they arose from a common ancestor. Hence, the bone in a bird's wing can be homologous to a bone in a lizard leg because they have a common ancestor in the past.

5 0
2 years ago
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A population of ground mice consist of 500 individuals. You are interested in the gene that codes for for a color and find out t
Lelechka [254]

Answer:

0,58

Explanation:

Mice are diploid (2n) organisms, which means that their cells contain two complete sets of homo-logous chromosomes (i.e., they have two copies of any given <em>locus</em>/gene). An allele can be defined as a variant of a gene, whereas diploid (2n) organisms have two alleles at each genetic <em>locus</em>, which are located on homo-logous chromosomes. In this case, we know that there are 580 dominant alleles in a population of 500 individuals, thereby the total number of alleles in this population is 1000 (2n >> 500 x 2 = 1000 alleles), and the frequency of the dominant allele is 0,58 (580/1000 = 0,58).

6 0
2 years ago
Which of the steps in this sequence of events is an example of mitosis at work?
taurus [48]
<span>The bruise slowly disappears as the arm heals.

</span>
<span>The two identical daughter cells resulting from mitosis and cytokinesis are identical in the following ways:1. Mitosis occurs when the nucleus of the cell divides into two identical nuclei, each with the same type and number of chromosomes. The cell's DNA is duplicated during this phase. Sometimes the cell's DNA isn't copied properly resulting in cancer-type cells. 2. Cytokinesis is when the cytoplasm divides into two identical daughter cells. Each cell is genetically identical and both are a similar size.
</span>
7 0
2 years ago
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What characteristic of water causes it to display these properties: adhesion, cohesion, surface tension, and capillary action?
Nat2105 [25]

Answer:Capillary action

Explanation: it sticky, thanks to the forces of cohesion water molecules like to stay close together.

3 0
2 years ago
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