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UNO [17]
2 years ago
11

Which process do you think offers a greater chance of nondisjunction—mitosis or meiosis? explain your answer

Biology
1 answer:
mario62 [17]2 years ago
8 0
Answer: Nondisjunction means that a pair of homologous chromosomes has failed to separate or segregate at anaphase so that both chromosomes of the pair pass to the same daughter cell. This probably occurs most commonly in meiosis, but it may occur in mitosis to produce a mosaic individual.
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HELP ASAP<br> Punnett Squares
pashok25 [27]

Answer: The genotype ratio of offsprings of a cross between one homozygous tall plant and one heterozygous tall plant is 2TT:2Tt

The phenotype ratio is that all offsprings will be tall.

The genotype ratio of a cross between two heterozygous red flowers is 1RR:2Rr:2rr. The phenotype ratio is 3 Red flowers: 1 white flower.

Explanation: From the information given, tall is dominant and short is recessive while red is dominant and white is recessive.

Let T represent the allele for tall height, t represent the allele for short height, R represent allele for red flowers and r represent allele for white flowers.

The genotype of a homozygous tall plant is TT, the genotype of a heterozygous tall plant is Tt, the genotype of a heterozygous red flowered plant is Rr.

The possible genotypes of offsprings of a cross between one homozygous tall plant and one heterozygous tall plant are TT and Tt.

Tt will manifest outwardly as tall because T is dominant over t. Therefore, all the offsprings will be tall.

The possible genotypes of a cross between two heterozygous red flowers are RR, Rr and rr. RR will manifest as red, Rr will also manifest as red because R is dominant to r while rr will manifest as white because white allele (r) is recessive. Therefore 3 plants will be red-flowered while 1 plant will be white flowered.

See the attached punnet squares for details of the cross.

4 0
3 years ago
Where do seeds in non-flowering plants come from?
Zolol [24]

Answer:

The cone releases the seeds, and they float in the wind until they reach the ground where they can germinate and grow. Some do not produce seeds, instead they use spores to reproduce.

Ex. of Spore producing plants include: mosses and ferns

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1 earth axis 2 sunlight 3 elevation
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Cholesterol is an example of a ______________, one of the main classes of organic compounds.
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Answer:

steroid family

Explanation:

Chemically, cholesterol is an organic compound belonging to the steroid family; its molecular formula is C27H46O.

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