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forsale [732]
3 years ago
14

Need help on these 4 question

Biology
1 answer:
Aleksandr [31]3 years ago
4 0
5. B
6. B
7. C
8. A
I hope I was able to help!
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Inheritance patterns cannot always be explained by Mendel's models of inheritance. If a pair of homologous chromosomes fails to
soldier1979 [14.2K]

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

A) n+1; n+1; n-1; n-1

B) n+1; n-1; n; n

C) n+1; n-1; n-1; n-1

D) n+1; n+1; n; n

Answer:

Option-1

Explanation:

The laws of inheritance were concluded from the result of Mendel's experiment which is based on the fact that gametes are formed. Later research suggested that gametes are formed by the process of meiosis which takes place in two phases and recombination is a characteristic of Meiosis.

If during anaphase I of meiosis I, the alleles fails to separate that is nondisjunction takes place at anaphase I, Then the resulting daughter cells will have unequal distribution of chromosomes.

One daughter cell will receive 1 extra copy of the chromosome while another daughter cell will receive 1 less chromosome therefore ploidy level will be n+1 and n-1.

During meiosis II, 2 more daughter cells will be formed with the same ploidy level therefore in last the meiosis will result in 2 (n+1) and 2 (n-1) cell.

Thus, Option-1 is the correct answer.

4 0
3 years ago
Which of the following is an organism whose cells each contain a membrane<br> bound nucleus?
DerKrebs [107]

Answer:

D. Eukaryote

Explanation:

An organism that has membrane-bound organelles will have more complex organelles like mitochondria, Golgi apparatus, and ER. These are known as Eukaryotes. Additionally, they will have a nucleus that has the DNA coiled inside. Prokaryotes do not have membrane-bound organelle and the DNA floats in the cytoplasm. Most plants and animals are eukaryotes and all multicellular organisms are too.

3 0
3 years ago
A height above sea level of a point on surface is known as its?
Tcecarenko [31]
Elevation because it means the level of a point surface height above the sea level
4 0
3 years ago
Read 2 more answers
Which is the main source of energy that is shown in the equation?
Stels [109]
Where is the equation ?
7 0
4 years ago
Read 2 more answers
HELP NEEDED QUICK
Karolina [17]

Answer:

they are heterotrophic and can produce their own food unlike things like microbes who rely on other things to live. they are also multicellular unlike most bacteria (mushroom is an exception)

7 0
3 years ago
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