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Len [333]
3 years ago
9

Biology may be defined as the ______ of ________ according to your lesson. o.o

Biology
1 answer:
Phoenix [80]3 years ago
4 0
Biology is the study (2) of life (1)
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Which piece(s) of evidence best supports that all land mass was once a supercontinent called Pangea. Select all that apply
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Defenitely b, fossils, I don't think any of the others are right, But I could be wrong.

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All life on Earth started as unicelluar, prokaryotic organisms. Which of these structures was vital for organisms to develop in
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nucleus

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An organism that reproduces sexually has a diploid number of 30. How many
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Answer:

Gamete of organism has a haploid number of chromosomes.

2n = 30

n = 15

A diploid cell containing 30 chromosomes will result in 15 chromosomes in each of the 4 daughter cells after meiosis occurs.

After first nuclear and cellular division (Meiosis I), each daughter cell will only have 15 chromosomes as homologous chromosomes are broken apart at Anaphase I of meiosis I. Chromosomal number is halved. After the second nuclear and cellular division (Meiosis II), each daughter cell will also have 15 chromosomes. This time, instead of the chromosomal number being halved, their chromosomal contents are halved. Sister chromatids are separated at Anaphase II of Meiosis II, resulting in daughter chromosomes each.

Hope it helped!(:

Explanation:

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Student #1
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