Answer:
1. Reduce Pollutants
2. Conserve Water
3. Eat sustainable seafood
4. Don't purchase items that exploit marine life
5. Don't throw trash into the ocean
Hope this helps :)
The recombination frequency of the two gene pairs is 3%.
The number of recombinant offspring(r.o.) / total number of offspring x 100% = recombination frequency(θ):
r.o./total x 100% = θ
30/100 x 100% = 3%
Recombinant offspring are children that have a different allele combination to their parents.
For example, say a mother has a haploid cell with the alleles AB and the father has a haploid cell with the alleles ab. These combine to make a diploid cell with the sequence Aa+Bb.
Formation of Recombinant Offspring :
Recombination can happen in two different ways; independent assortment and crossing over.
- Independent assortment is when the maternal and parental DNA are mixed during meiosis, creating a new gene sequence.
- Crossing over happens during the first stage of meiosis when the two homologous chromosomes are paired and a portion breaks off on the same loci then reconnects to a different end. Crossing over can only happen when there isn't a physical linkage of the parental alleles.
Recombination frequency (θ) is the frequency with which a single chromosomal crossover will take place between two genes during meiosis. A centimorgan (cM) is a unit that describes a recombination frequency of 1%. In this way we can measure the genetic distance between two loci, based upon their recombination frequency. This is a good estimate of the real distance. Double crossovers would turn into no recombination. In this case we cannot tell if crossovers took place. If the loci we're analysing are very close (less than 7 cM) a double crossover is very unlikely. When distances become higher, the likelihood of a double crossover increases. As the likelihood of a double crossover increases we systematically underestimate the genetic distance between two loci.
When two genes are close together on the same chromosome, they do not assort independently and are said to be linked. Whereas genes located on different chromosomes assort independently and have a recombination frequency of 50%, linked genes have a recombination frequency that is less than 50%.
To learn more about Recombination frequency : brainly.com/question/7299933
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Answer:
The solution is<u> hypotonic</u>
Explanation:
Molecules in a solution move from <u>highly concentrated</u> regions to regions of <u>low concentration</u> in an effort to reach a state of equilibrium- where the molecules are equally distributed. This always occurs with the molecules moving down the concentration gradient.
Solutions can be:
- hypertonic, or more concentrated;
- hypotonic- less concentrated
- isotonic- same concentration
At 40% salt concentration, solution A is <u>hypertonic</u> while the less concentrated solution at 0% salt concentration is<u> hypotonic</u>.
The loss of ability to speak is known as Aphasia
caused by damage to the related regions of the brain.It is mainly caused by a stroke or brain injury with damage to one or more parts of the brain .
people who survive a stroke have highly chances to get aphasia.
Aphasia may also be caused by a brain tumor, brain infection, or dementia auch as Alzheimer's disease In some cases, aphasia is a symptom of epilpsy or other neurological disorder.