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77julia77 [94]
3 years ago
6

Which statement is true of DNA?

Biology
1 answer:
Illusion [34]3 years ago
8 0

Answer:

A purine always forms a complementary base pair with a pyrimidine.

Explanation:

Purine bases such as Adenine pair specifically with Thymine , a pyrimidine base forming two bonds; just as Guanine pair specifically with Cytosine forming three bonds.

This specific base pairing are complimentary in nature and grants stability to the DNA.

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6 different between mango and lotus
wariber [46]

Answer:

Mango tree: ... They are also grown mostly for the mango fruit production as the mango production achieved Mangifera is their genus name . They have relatively large leaves and can grow up to the height of 40 meter. Rose plant : They are the plants which means they are relatively small and has the weak stem.

8 0
3 years ago
If a pea plant has a recessive allele for green peas it will produce
PilotLPTM [1.2K]

Answer:

Green peas if it does not have a dominant allele for yellow peas.

Explanation:

In pea plants, yellow is the dominant allele color of peas and green is the recessive allele color of the pea. So the genotype that makes yellow color pea is YY or Yy and the genotype that is responsible for producing green color pea is only YY.

This shows that homozygous dominant or heterozygous dominant condition gives rise to yellow color pea and only homozygous recessive condition would give rise to green color pea plants.

Therefore if a pea plant has the recessive allele for green peas it will produce green peas if it does not have a dominant allele for yellow peas.

7 0
3 years ago
A woman with normal BRCA alleles has a child with a man who has one mutated BRCA1 allele. What is the probability that the child
grigory [225]

Answer:

50%

Explanation:

According to the given information, the woman has normal BRCA alleles while the man carries one copy of the mutated BRCA allele (BRCA1). A diploid organism such as human beings can have two BRCA alleles. A child gets one BRCA allele from the mother and the other from the father.

The child of the couple would get one normal allele from the woman. However, with respect to the BRCA allele, the man would form two types of gametes in equal proportion. The 50% of his gametes would have the mutated BRCA1 allele while the rest 50% would carry the normal BRCA allele. Therefore, the man can transmit either normal or mutated BRCA allele to the child. So, there are 50% chances for the child to get the mutated allele.

6 0
2 years ago
How have frogs evolved from 500 mpa to 250 mya?
Zolol [24]
They reproduce over the years making it less frog to survive
7 0
3 years ago
Compare and contrast the cell structures / organelles found in plant and animal cells.
Allushta [10]

Answer:

Same: Mitochondria,Cell membrane,Vacuole

Different: Cell wall,Chloroplast

Explanation:

I hope this helps :)

4 0
2 years ago
Read 2 more answers
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