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m_a_m_a [10]
2 years ago
6

A giant tortoise traveling at 0.3 km/hr would take how many hours to complete a marathon(42km)

Biology
1 answer:
larisa [96]2 years ago
7 0

140 h

Explanation:

speed =distance/ time

so rearrange the formula

time= distance/ speed

time = 42/0.3

time = 140 h

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A certain eukaryotic organism has multiple, distinct genes with highly similar sequences that are expressed at different times i
vlabodo [156]

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

#SPJ4

3 0
2 years ago
A small town records a substantial increase in atmospheric CO2 levels over a 10-year span. The change is attributed to a rapid g
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D replace large, martyrs tresss will amalle
4 0
3 years ago
Sakura tested the pH of several solutions. Which substance are acidic?
stealth61 [152]

Answer: cola-flavored soda: 2.6

cranberry juice: 2.9

pickle juice: 5.5

Explanation:

The substances given are:

cola-flavored soda: 2.6

cranberry juice: 2.9

dish soap: 7.3

pickle juice: 5.5

seawater: 8.0

lye soap: 13.0

Based on a pH scale, an acidic solution is one that has a pH that is below 7, a solution is neutral if the pH is 7 while a basic solution has a pH of above 7.

Therefore, the acidic substance will be:

cola-flavored soda: 2.6

cranberry juice: 2.9

pickle juice: 5.5

4 0
3 years ago
NEED HELP ASAP! WILL GIVE BRAINLIEST<br> How much energy is passed up the food chain?
lutik1710 [3]

Answer:

.10

Explanation:

it gets smaller by .10 every time it goes up

7 0
3 years ago
Read 2 more answers
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