<span>F- allele for freckles
f- </span><span>allele without freckles
1) The man is heterozygote and has freckles, its indicating that the allele for freckles is dominant.
A cross between him and a woman who is also </span><span>heterozygote: Ff x Ff
it would result in the following probabilities:
- 1/4 - homozygote with freckles: FF
- 2/4 - </span><span>heterozygote with freckles: Ff
- 1/4- </span><span>homozygote without freckles:ff
Their son would have a probability of 75% of being born with freckles.
2) The cross resulted in this probabilities:
</span><span><span>- 1/4 - homozygote with freckles: FF
- 2/4 - </span><span>heterozygote with freckles: Ff
- 1/4- </span><span>homozygote without freckles:ff
So, the chance of being born heterozygote for this gene is 2/4, which is the same as half (50%).
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The primary organ of digestion and absorption is the intestines.
They are made from igneous, metamorphic and sedimentary rock.
The answer is an average couple is fertile for only 6-7 days. If a couple cannot produce healthy sperm and egg there are the various treatment to help infertile couples to become pregnant and can have their own child. Infertility happens if there is the failure to conceive consecutive 12 months despite the attempts.
