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NemiM [27]
3 years ago
13

True or false? investigators trying to track the early spread of hiv found hiv-infected blood samples from as early as 1956, in

the blood of a widely traveled norwegian sailor who died of immune deficiency.
Biology
1 answer:
Anastasy [175]3 years ago
3 0
False  
The diseases, announced by Dr. Stig Froland, Dr. Paul Jenum and associates, shows that AIDS happened in disengaged occasions far and wide some time before general wellbeing authorities saw it years back.   
In the Norwegian case, a mariner conceived in 1946, was first observed by Dr. Froland in 1966. He experienced general swelling of the lymph organs, respiratory diseases and different other health issues. Both his wife and child has complications as well from the ailment and all members of the family passed on in 1976.
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Eukaryotes have their DNA arranged in numerous double-stranded, linear DNA molecules bound with proteins; these structures are c
Elden [556K]

Answer:

In eukaryotes, the genome comprises several double-stranded, linear DNA molecules bound with proteins to form complexes called chromosomes

3 0
4 years ago
If the integument of an angiosperm seed contains cells with 20 chromosomes, how many chromosomes would you expect to find in the
OleMash [197]

Answer:

30

Explanation:

The seed of an angiosperm is formed as a result of fertilization (fusion of sperm in pollens and the ova from ovary). According to the question, the cells of the seed which will grow into the plant contains 20 chromosomes. Seeds of angiosperms contain a tissue called ENDOSPERM that forms as a result of the unique DOUBLE FERTILIZATION in angiosperms. It occurs when one haploid sperm cell fuses with two haploid polar nuclei to form a triploid endospermic structure that serves as food for the growing embryo in the seed.

Now based on the above explanation, the diploid plant cell with 20 chromosomes will have 10 chromosomes (half as much) in its gametes as a result of meiosis. This 10 chromosomes in each gamete (sperm and ovum) fuses to form a diploid zygote with 20 chromosomes, while one haploid sperm cell (10 chromosomes) also fuses with two haploid polar nuclei (10 chromosomes each) to form a triploid endosperm with 30 chromosomes i.e. 10+10+10.

8 0
3 years ago
Are herbivores or omnivores better adapted for ecosystems
horrorfan [7]

Answer:

I think its omnivores

Explanation:

oninvores can better adapt to developments than herbivores and carnivores. because they have a better time finding food, they are better at adapting to new environments

5 0
3 years ago
Where do divergent boundaries most often occur
Ksenya-84 [330]

mid-oceanic ranges I believe.

4 0
3 years ago
The texture of a single melodic line without accompaniment is:
shusha [124]

Answer:

Monophony

Explanation:

3 0
2 years ago
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