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Delvig [45]
2 years ago
10

A certain eukaryotic organism has multiple, distinct genes with highly similar sequences that are expressed at different times i

n the organism's life cycle. these genes could have arisen by:________
Biology
1 answer:
vlabodo [156]2 years ago
3 0

These genes could have arisen by gene duplication.

<h3>What is gene duplication?</h3>

Gene duplication is the process of copying a section of DNA that codes for a gene. A retro transposition event or a recombination mistake are both potential causes of gene duplication. As a result, the duplicate gene coding may experience a significant number of modifications throughout time. This might prevent the gene from functioning or, in other situations, give the creature a benefit.

Gene duplication is a phenomenon that can happen through a variety of ways:

  • Ectopic Recombination: Uneven crossing-over between misaligned homologous chromosomes during meiosis might result in duplications. A duplication at the exchange site and a reciprocal deletion are the results of this recombination.
  • Replication Slippage: Short genomic sequences can be duplicated as a result of the replication error known as replication slippage. DNA polymerase starts copying the DNA during replication, but eventually the polymerase separates from the DNA, causing replication to stall. The replicating strand is incorrectly aligned when the polymerase reattaches to the DNA strand, which accidentally results in several copies of the same portion.
  • Aneuploidy: When a single chromosome's nondisjunction causes an abnormally high number of chromosomes, this condition is known as aneuploidy. Aneuploidy is frequently damaging and frequently causes spontaneous miscarriages in mammals. Some aneuploid people can survive. For instance, human trisomy 21 causes Down syndrome but is not lethal.

Learn more about gene duplication here:

brainly.com/question/14014915

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A set of flashcards on prokaryotes is being sorted into piles. which definition should not be placed in the pile for high-gc gra
sergey [27]
A.  they have a higher proportion of adenine–thymine than guanine–cytosine base pairs.

The option A represents the complete opposite of "high-gc gram-positive bacteria". High GC content means that this bacteria have more guanine ans more cytosine than the other base pairs- adenine–thymine. This means all the other options are correct.

4 0
3 years ago
Peat is a mixture of partially decomposed plant and animal material found in waterlogged, acidic, anaerobic environments. people
Verizon [17]

because the total time for restoration is lengthy, peat can be considered a fossil fuel. The correct option is B.

<h3>What exactly are fossil fuels?</h3>

Fossil fuels are fuels derived from the remains of dead plants and animals that decomposed over time under intense heat and pressure.

Because their replenishment time is longer than a human lifetime, fossil fuels are non-renewable energy sources.

Some examples of fossil fuels are petroleum, coal, etc.

The missing options of the question are:

  1. peat is a fossil fuel because rewetting it takes only 3-5 years.
  2. peat is a fossil fuel because the total time for restoration is lengthy.
  3. peat is not a fossil fuel because it has biologic origins, making it a biofuel.
  4. peat is not a fossil fuel because humans can promote the replenishment of peat.

The restoration process of peat takes a long time of more than 100 years. As a result, because the total time for restoration is lengthy, peat can be considered a fossil fuel.

Thus, the correct option is B.

For more details regarding fossil fuels, visit:

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3 0
2 years ago
Please help me help with some of my Botany questions!
Orlov [11]

Answer:

for 7

Explanation:

7.If the leptons of mosses were found to contain a protein whose gene had the same nucleotide sequence as the gene that codes for P-protein, would that be significant evidence for either the homo-logy or analogy of leptons and phloem?

4 0
3 years ago
A pink flowered plant is crossed with a white flowered plant. what se the genotypes?
Angelina_Jolie [31]

Answer:

The genotype for the pink flower is Rr and the genotype for the white flower

is rr. This would lead to a 50% chance of the offspring having a phenotype of pink.

Explanation:

8 0
3 years ago
What is the source of the bacteria in the culture tube in model 1? 2. how many genetic variants of
Sholpan [36]

The source of bacteria in the culture tube in model 1 is from a swab of a desktop. Moreover, there are four variants in the E. coli culture from the initial swab and the variants of E.coli found on the dish grown with triclosan are evolution and selection.

 

8 0
3 years ago
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