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2 years ago

Compare the hibiscus and spider lily pollen grain structure

Biology

1 answer:

gregori [183]2 years ago

8 0

Explanation:

Pollen grains are the male gametes in plants. It is present on the anthers. Pollen grains finds its way to the ovule by the process of pollination. The structure of pollen grains vary from one species of flower to another. The hibiscus and spider lily both have circular pollen grain.

However, the atomic structure of pollen grain of hibiscus represents the Buckminster fullerene but is not shown in spider lily. The pollen grains of hibiscus have spikes on its surface.

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2 years ago

Gene A has two alleles (A1 and A2). A1A1 homozygotes are twice as likely to survive from birth to reproductive age as heterozygo

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Answer:

The correct answer is C: 0.60 A1 and 0.40 A2 will be the allele frequencies in those progeny when they reach reproductive age

Explanation:

Genotype A1A1  A1A2 A2A2 

Relative aptitude, w 1 0.5 0.5

Number of individuals 40 40 40

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of each genotype

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Population AA= 0.25/0.625 AB=0.25/0.625 BB=0.125/0.625

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Total number of individuals: 120

Initial allelic frequency:

(number of homozygote individuals + half number of

heterozygote individuals) / Total number of individuals

Relative contribution of each genotype:

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Average aptitude W: It is the sum of relative contribution of each genotype to the next generation.

wA1A1 x p2 + WA1A2 x 2 x p x q + WA2A2 x q2

Population Genotype frequency:

Relative contribution of each genotype / Average aptitude

Allelic frequency:

Homozygote population genotype frequency + half

heterozygote population genotype frequency

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2 years ago

Compare the hibiscus and spider lily pollen grain structure​

Compare the hibiscus and spider lily pollen grain structure