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IgorC [24]
3 years ago
13

What occurs during metaphase 1 of meiosis?​

Biology
2 answers:
sweet-ann [11.9K]3 years ago
7 0

Answer:

Explanation:

This stage is characterised by the arrangement of homologous chromosomes at the equator of the cell and the formation of micro tubules(spindle and fibres) attached to the centomere of each homologous chromsomes.

alisha [4.7K]3 years ago
3 0

Answer:

The pairs of chromosomes become arranged on the metaphase plate.

Explanation:

Please mark brainliest and have a great day!

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Glucose-6-phosphate dehydrogenase deficiency (G6PD) is inherited as an X-linked recessive allele in humans. A woman whose father
prohojiy [21]

Answer:

(a) 1/2; (b) no

Explanation:

Glucose-6-phosphate dehydrogenase deficiency (G6PD) is an X-linked recessive disorder and the woman's father was diseased so it means that woman is a carrier of the allele but has normal phenotype. It means that she will have XXᵇ genotype.

In contrast to this, her husband is diseased so his genotype will be XᵇY.

The Punnett square diagram related to the cross is attached.

(a) Proportion of their sons expected to be G6PD is 1/2:

They both may give birth to 4 progeny with genotypes XXᵇ, XᵇXᵇ, XY and XᵇY. It means they both may have 2 sons out of which one with genotype XᵇY will be diseased while the one with genotype XY will be healthy. So the proportion of their sons having G6PD is 1/2 or 50%.

(b) If the husband were G6PD deficient, the answer will not change.

The reason behind this is that this disease is caused by an allele located in X chromosome. But father contributes only Y chromosome to his son not X chromosome. The X chromosome will affect the genotype of his daughter not son that is why answer will not change. It means they will still have 1/2 of their sons diseased.  

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3 years ago
TRUE OR FALSE:<br><br> The rate at which a glacier moves is the same throughout the glacier.
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The skin around a cut becomes red and warm as part of the
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Answer:

in the explanation box

Explanation:

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4 0
3 years ago
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Elan Coil [88]

Answer:

c

Explanation:

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What action could be taken to help conserve the world's supply of copper?
AlladinOne [14]

Answer:  This is a hard question because we need copper for just about anything.  Some people say that electric cars are better because the conserve fuel, but they have copper.  The source of all of our power (electricity) stems from copper.  Simply said, no matter what you do to conserve copper, you are still going to need it and use it.

Explanation:

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