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ser-zykov [4K]
3 years ago
5

Explain why people who smoke find it difficult to exercise.

Biology
2 answers:
Strike441 [17]3 years ago
8 0
Smoking, makes your lungs black, and they make you very sick, an if you smoke, stop!, because you are ruining  your health.
Hope that this helps you! =)
Yakvenalex [24]3 years ago
5 0
Smoking ruins your lungs making it harder to breath and get oxygen
you need oxygen when you exercise so you don't faint
smokers get less so it is harder for them, its like trying to exercise while breathing through a sponge or a straw os
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35%

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If two genes are 30 map units apart, 30% of the produced gametes will be recombinant.

A mating between an individual homozygous dominant for both traits (AB/AB) and one homozygous recessive for both traits (ab/ab) is conducted.

The F1 will be heterozygous for both genes: AB/ab.

The F1 progeny is then test-crossed to a homozygous recessive individual:

<h3>AB/ab X ab/ab</h3>

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Since 30% of all the gametes produced by the F1 individual will be recombinant, 70% will be parental. As there are two types of parental gametes, each of them will have a frequency of 35%.

<u>The offspring that will have a dominant phenotype for both traits has the genotype AB/ab with a proportion of 35%.</u>

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