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kykrilka [37]
3 years ago
12

Brown eye color in fruit flies is caused by a variation in a gene. What are two possible sources of this genetic variation?

Biology
1 answer:
sattari [20]3 years ago
6 0

Answer:

random mating

<h3>matution:a change in the chromosomes or genes of a cell</h3>

Explanation:

crossing over(or recombination) between chromotids or homologous chromosomes during meiosis

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Anni [7]
Uhhhhhhhhhhhhhhh yes.
3 0
3 years ago
In the polymerization of DNA, a phosphodiester bond is formed between a phosphate group of the nucleotide being added and which
Morgarella [4.7K]

Answer:

3' OH ( hydroxyl group).

Explanation:

DNA is present as the genetic material in almost all the living organisms except in case of some viruses only. DNA is made of the polymers of the nucleotides.

The phosphodiester bond is present between the two nucleotide chains. The phosphodiester is a covalent bond formed in which the phosphate group of nucleotide is involved with the hydroxyl group of the sugar and a small molecule like water is removed during the process.

Thus, the correct answer is  3' OH ( hydroxyl group).

4 0
4 years ago
Name 2 ways forelimbs are different than hind limbs.
WINSTONCH [101]

<span>1. Hind limes tend to be sturdier, stronger and longer. </span>

<span>2. The hind limbs are more firmly attached to the spine.</span>

5 0
3 years ago
Legend has it that there was a less famous geneticist in the 1800s
NNADVOKAT [17]

Answer:

Few crosses

The complexity of cat genetics

Crosses not controlled by the researcher

Explanation:

The purpose of this question is to determine why  Megor Grendel is less famous than that of Gregor Mendel.

Gregor Mendel examined pea plants, which have a number of benefits for deducing genetic rules, including:

  • The researcher has total control over the crosses.
  • Because the peas have both self and cross-fertilization, it is possible to alter the crosses in the simplest way possible.
  • Pea plants may be examined for a greater series of generations than cats or other animals.
  • Because plant genetics is not overly complicated, several traits may be investigated at the same period.

As a result, the primary factors why Megor Grendel's experiments are not well-known:

  • The presence of only a few crossings: It is impossible to establish a genetic theory with such a small number of crossings on the test subject of the organism.
  • Cat genetics is too complicated therefore, the fur gene color on the X-chromosome, a characteristics mosaic inheritance. As a result, It is much too complicated to deduce an inheritance pattern.
  • Crossings that the researcher cannot fully control. Unlike plants, crosses in animals cannot be totally controlled by the researcher.

As a result, it is impossible to draw any conclusions from them.

3 0
3 years ago
Explain why a food web is a more realistic model of energy flow than a food chain.
svp [43]

it includes more organisms in the ecosystem that would otherwise not be shown in a food chain.

8 0
3 years ago
Read 2 more answers
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