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inysia [295]
3 years ago
7

Why did Portuguese sailors round the southern tip of Africa in 1488?

Biology
1 answer:
HACTEHA [7]3 years ago
8 0

Answer:

In 1488, Portuguese explorer Bartolomeu Dias (c. 1450-1500) became the first European mariner to round the southern tip of Africa, opening the way for a sea route from Europe to Asia. ... A major maritime victory for Portugal, Dias' breakthrough opened the door to increased trade with India and other Asian powers.

Explanation:

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Which structure, If cut off, will hamper sexual reproduction in fungi?
Lisa [10]

Answer:

Fruiting body,  If cut off, will hamper sexual reproduction in fungi.

<u>Explanation:</u>

Fungi are of unicellular, multinucleate, and multicellular. They can be classified based on their reproductive spores and their multinucleate or multicellular filaments nature that can be called as hyphae. The sporocarp  that is also named as fruiting bodyor fruit body is a multicellular structure in which the spore-producing structures, like basidia or asci, are born.

The fungi consist of spores in the fruiting bodies, that are dispersed for reproduction process. Mushrooms common instance of a fruiting body. These are formed from hyphae, that are smaller threads that usually forms the bulk of fungi. The term mycelium that describes a  hyphae network will be extending in all directions through the soil. Hence, when Fruiting body is cut off it will hamper sexual reproduction in fungi because there are many hyphae with which Fruiting body can be formed.

3 0
3 years ago
In a population of white (W) and black (w) sheep, 22 out of 244 sheep are black. What is the frequency of the dominant allele in
olasank [31]

Answer and Explanation:

To calculate the allele frequency in the population, we divide the number of occurrences of the particular allele by total number of all alleles in the population Allele frequencies can be represented as a decimal, a percentage, or a fraction.

Given the population of white (W) and black (w) sheep, 22 out of 244 sheep are black, the frequency of the dominant allele in the population = 222/244×100=

4 0
2 years ago
In your own words, describe what information the visible DNA fingerprint provides for each DNA sample
Sidana [21]

Answer:

The visible DNA fingerprint can help extract DNA which, after analysis, can accurately identify the suspect or perpetrator of the crime.

Explanation:

DNA Fingerprinting:

  • DNA fingerprinting is a molecular analysis tool that can help identify a suspect in a crime through DNA extracted from fingerprints.
  • Specific patterns in the DNA, known as polymorphisms, can be identified through DNA fingerprinting.
  • The DNA fingerprinting process involves:
  1. Extraction and purification of the DNA from the fingerprint.
  2. PCR amplification to obtain high yield.
  3. Fragmentation of the DNA by use of restriction enzymes.
  4. Gel electrophoresis analysis of the fragmented DNA.
  5. Analysis of gel to compare the size of the bands.
7 0
3 years ago
For natural selection to occur, variation must exist. this is true because without variation
chubhunter [2.5K]
<span>Without variation, there is no difference between members of a population to be "selected for" in the first place. This is a basic tenet of natural selection. A new trait must arise in order to advance or decrease the fitness of the individual, and hence, its ability to pass on its genes.</span>
6 0
3 years ago
Factors like lack of variation and environmental changes can cause a species to fail to survive. This is known as
Natali [406]
The answer is c as the population had failed to survive
5 0
3 years ago
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