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N76 [4]
3 years ago
9

How does meiosis I differ from meiosis II?

Biology
1 answer:
PIT_PIT [208]3 years ago
6 0
Option D is correct, I believe that option A is wrong because in meosis 1 sister chromatids are together option B is wrong because homologous chromosomes are in meiosis 1 not 2 option C is wrong because 4 sex cells are produced in the process of meosis 2
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Due to hunting, the population of Northern elephant seals was reduced to 20 individuals at the end of the 19th century. Since th
anygoal [31]

Answer:

Option C

Explanation:

Long term hunting has led to following  

a) Reduction in population size and hence the gene pool

b) Causation of Bottleneck effect

Due to above factors, the remaining population of Northern elephant seals does not represent the original genetic problem.  

Due to this restriction in mating and genetic variation shall prevail pertaining to reduced gene pool.  

Due to continuous hunting, the gene pool will further shrink, leading to genetic similarity among the organism

Option C is correct

8 0
3 years ago
The skeletal system of an animal provides structure and support, Which cell part provides a similar function in a plant cell.
fgiga [73]
The cell part that has the same function of the skeletal system is the cell wall
3 0
3 years ago
Read 2 more answers
1. What three organelles are likely involved in Tay-Sachs?
olchik [2.2K]

Answer:Tay-Sachs is an autosomal recessive disease caused by mutations in both alleles of a gene (HEXA) on chromosome 15. HEXA codes for the alpha subunit of the enzyme β-hexosaminidase A. This enzyme is found in lysosomes, organelles that break down large molecules for recycling by the cell.

Explanation:

8 0
3 years ago
Which characteristic of viruses prevents them from being used as evidence to support cell theory?
Ne4ueva [31]

Answer:

Viruses replicate only inside host cells.

Explanation:

<u>Viruses are not used as evidence to support the cell theory because they are not considered a cell and cannot carry out vital life processes without getting into host cells. </u>

According to the cell theory, the cell is the basic unit of life, all living organisms are made up of cells and cells arose from preexisting cells. A virus that is not in a host cell is just a piece of DNA/RNA surrounded by a protein coat and is not capable of carrying out any life process for it to be considered living.

<em>Viruses are only able to reproduce and multiply when they get access to a living host. They use the genetic mechanisms of the host to replicate their DNA/RNA using the lytic or lysogenic cycle. Hence, they are not used to support the cell theory. </em>

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