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olga2289 [7]
3 years ago
7

Whats the relationship between DNA,chromosomes,and genes?

Biology
1 answer:
Elina [12.6K]3 years ago
6 0
DNA is a chain of nucleotides bonded together.  On that chain there are particular portions of it that the sequence of the nucleotide codes for particular proteins; this is known as a gene.  In eukaryotric cells, DNA is coiled around proteins such as histones to form chromatids which when two join at the centre by a centromere to form a chromosome.
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A man with AB blood has children with a woman with AB blood. What are possible blood types of their children? (select more than
Anettt [7]

Answer:

I believe the childre could have type AB, A, and B blood

Explanation:

8 0
2 years ago
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Scientist involved in biotechnology sometimes insert DNA of one organism into a second organism. What is the purpose of this pro
dezoksy [38]

Answer:

1. to increase meiosis.

2. to make more efficient cell organelles.

3. to cause the second organism to produce protein

Explanation:

7 0
3 years ago
Restriction endonucleases are especially useful if they generate sticky ends. What makes an end sticky?
Mazyrski [523]

The question is incomplete as it does not have the options which are:

A) single-stranded complementary tails

B) blunt ends

C) poly-A sequences

D) 5' cap

E) interference

Answer:

A) single stranded complementary tails

Explanation:

Restriction endonuclease is the enzyme which cuts the DNA sequence in the internal sequence.

The endonuclease enzyme can cut the DNA sequence in a way that it can form the cuts with the single-stranded overhangs called sticky ends and without overhangs called blunt ends.

The sticky ends are produced when the enzyme makes cut at the single strand and then makes the cut at between the same base at the nitrogenous base. This type of asymmetrical cut forms the single-stranded overhangs which can form the complementary base pairs easily.

Thus, Option-A is correct.

5 0
3 years ago
Which of the following is not true concerning the flow of energy through an ecosystem? a. Most solar energy is used in photosynt
sleet_krkn [62]

Answer;

D. Most of the energy from photosynthesis flows out as heat

Explanation;

Energy flow is the amount of energy that moves through a food chain in a given ecosystem.

Producers such as green plants in a ecosystem convert energy from the the sun into carbon bonds, such as those found in the sugar glucose through the process of photosynthesis.

The amount of chemical energy storied as nutrients in the bodies and wastes of organisms flows through ecosystems from one trophic level to the next and through this flow energy also is lost as heat. And the chemical energy available to the succeeding feeding level decreases.

7 0
3 years ago
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5. What is the probability of a child having blood
fredd [130]

Answer:

50/50  

Explanation:

Each of us has two ABO blood type alleles, because we each inherit one blood type allele from our biological mother and one from our biological father. A description of the pair of alleles in our DNA is called the genotype. Since there are three different alleles, there are a total of six different genotypes at the human ABO genetic locus. The different possible genotypes are AA, AO, BB, BO, AB, and OO.

3 0
3 years ago
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