Which of the following statements is true about Mendel?

Biology

1 answer:

Illusion [34]3 years ago

5 0

Answer: A

Explanation:

His discoveries concerning genetic inheritance were generally accepted by the scientific community when he published them during the mid 19th century. He believed that genetic traits of parents will usually blend in their children. His ideas about genetics apply equally to plants and animals.

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Became increasingly greek

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A student conducted an experiment in science class by placing a closed plastic baggie of starch into a large container of iodine

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Answer:

The iodine might have got into the bag by the process of diffusion/osmosis.

In the process of diffusion, particles move from an area of higher concentration to an area of lower concentration along a concentration gradient.

As we know, the iodine solution in the large container had more particles of iodine whereas the baggie had none of the iodine solution. As a result, a concentration gradient developed due to which iodine solution moved into the baggie through the process of diffusion or osmosis.

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In the fruit fly Drosophila, there is a dominant gene for normal wings and its recessive allele for vestigial wings. At another

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Answer:

Explanation:

The genes for vestigial wings (vg) and purple eyes (pr) are linked on the same chromosome.

The following cross was made:

Heterozygous male for both genes X female vg pr / vg pr

The male could be either vg+pr+/vg pr or vg+ pr/vg pr+.

The female only produces vg pr gametes.

The following offspring was observed:

420 Normal wings and red eyes (vg+ pr+/vg pr)

430 Vestigial wings and purple eyes (vg pr / vg pr)

80 Vestigial wings and red eyes (vg pr+ / vg pr)

70 Normal wings and purple eyes (vg+ pr / vg pr)

Total: 1000

The individuals observed in the highest frequency have the parental genotypes. The recombinant individuals are vg pr+ / vg pr and vg+ pr / vg pr.

Distance = Number of recombinants × 100 / Total

Distance = (80 + 70)×100 / 1000

Distance = 15 cM.

Just a small note, male drosophila do not experience crossing over in meiosis, so there would be no recombinants observed from this cross. The problem is probably mixed up, the female should be heterozygous and the male the homozygous recessive.

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Answer:

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