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loris [4]
3 years ago
13

yeast is eukaryotic organism that has 32 chromosomes. its dna has been sequenced and has been determined to have 6000 genes. app

roximately, how many genes could possibly be in one chromosome of each chromosome has the same size?
Biology
1 answer:
IceJOKER [234]3 years ago
6 0

Answer:

The correct answer would be 187-188 genes.

The chromosome is defined as a thread-like structure formed by deoxyribonucleic acid (DNA ) and associated proteins.

It carries the genetic information an organism in the form of genes.

Genes refer to the coding sequence of the chromosome which specifically codes for the amino acid sequence of a protein.

The genome of the yeast consists of 32 chromosomes which have 6000 protein-coding genes.

As these chromosomes are equal in size that is, each contains the equal length of the DNA.

Thus, hypothetically we can say that each chromosome consists of 187-188 chromosomes (6000/32 = 187.5)

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22. A plant geneticist is investigating the inheritance of genes for bitter taste (Su) and explosive rind (e) in watermelon (Cit
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Answer:

See the answer below

Explanation:

Using the formula for calculating Chi square (X^2):

X^2  =  \frac{(O - E)^2}{E} where O = observed frequency and E = expected frequency.

The observed frequencies for the four phenotypes are 88, 62, 62, and 81 respectively.

For the expected frequency, the phenotypes are supposed to assort in 9:3:3:1 according to Mendel ratio.

Hence, expected frequencies are calculated as:

phenotype (1) = 9/16 x 293 = 164.81

phenotype (2) = 3/16 x 293 = 54.94

phenotype (3) = 3/16 x 293 = 54.94

phenotype (4) = 1/16 x 293 = 18.31

The X^2 is calculated thus:

Phenotype            O               E                             X^2

  1                          88            164.81            \frac{(88 - 164.81)^2}{164.81} = 35.80

  2                          62             54.94            \frac{(62 - 54.94)^2}{54.94} = 0.91

  3                           62             54.94              \frac{(62 - 54.94)^2}{54.94} = 0.91

  4                            81              18.31               \frac{(81 - 18.31)^2}{18.31} = 214.64

Total X^2 = 35.80 + 0.91 + 0.91 + 214.64 = 252.26

To the nearest tenth = 252

Degree of freedom = n - 1 = 4- 1 = 3

X^2 tabulated  = 7.815

<em>The calculated </em>X^2<em> exceeds the critical value, hence, the null hypothesis is rejected. The two genes did not assort independently.        </em>

4 0
2 years ago
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