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DochEvi [55]
3 years ago
5

Why do scientists use light-year instead of Astronomical Units to measure the distances between stars?

Biology
1 answer:
vitfil [10]3 years ago
3 0

Answer:

well AU is only for inside a star system and the number of AU would be too high, so light years are easier its like saying ur 6 feet instead of 72 inches or in centimeters

Explanation:

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If both parents contribute identical versions of a gene, then the offspring are ______ for that gene.
elena-14-01-66 [18.8K]

Homozygous is the condition that the offsprings would have, if both their parents contribute identical versions of a gene.

<h3>What is the difference between homozygous and heterozygous ?</h3>
  • Homozygous and heterozygous are terms that are used to describe allele pairs.
  • Individuals carrying two identical alleles (RR or rr) are known as homozygous.
  • Individual organisms bearing different alleles (Rr) are known as heterozygous.
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6 0
1 year ago
It is possible for two parents each with brown eyes to produce a blue-eyed child.
elena55 [62]

Answer:

True

Explanation:

The color of the baby's eyes is influenced by the genetic inheritance (of the genes transmitted by the mother and father) and the amount of melanin (brown or black pigment whose type and amount is encoded in the genes) found in the iris.

Eye color is controlled by at least three genes, although researchers still only understand the role of two of them. Determining eye color is an extremely complex process and there are several conditioning factors and genetic combinations that can influence the final color.

The more melanin, the darker the color of eyes, skin and hair. If parents have both brown eyes, it is natural for their children to have the same color. However, there may be a genetic influence from an ancestor and the child expressing a different color.

If the presence of melanin in the iris is reduced, the baby will have blue eyes, even if father and mother have brown eyes. If the presence of melanin is higher, the eye color will be green or hazel. When there is a large production of melanin, the eyes are brown, predominant color over green or blue and therefore more common. The least common color is green.

4 0
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Comprehension Questions:
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Photosynthesis and cellular respiration are<u> chemical reactions</u> that occur in cells.

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Photosynthesis is the process of making food through carbon dioxide, water and sunlight. It is an anabolic reaction.

Cellular respiration is the process of breaking down of food molecules by oxygen. It is a catabolic reaction.

Thus, the correct option is a, chemical reaction

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8 0
2 years ago
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