Answer:
Answer down below v
Explanation:
The types of diseases that river basins carry are waterbone diseases.
They are cause mostly from contaminated water from which is housed in the river.
Some major diseases cause by water are:
cholera, diarrhoea, dysentery, hepatitis A, typhoid, and polio.
Hopefully this helped. If it didnt, I am sorry. Anyways, have a wonderful day! :)
B- Glucose and oxygen.
Plants give off oxygen and they make glucose as food for themselves
Answer:
Crossing over
Explanation:
Genetic variation is increased by meiosis
Because of recombination and independent assortment in meiosis, each gamete contains a different set of DNA. This produces a unique combination of genes in the resulting zygote. Recombination or crossing over occurs during prophase I.
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: ) Miss Hawaii
Ans. (A). alleles.
The two or more than alternative forms, shown by a gene, are are known as alleles. For example, a plant gene that controls plant height shows two alternative forms or allele, one for small height (represented by 't') and one for long height (represented by 'T').
The alleles arise due to mutations in wild type trait and are found at the same region of a chromosome.
Thus, the correct answer is option (A).
