As parent's genotypes are missing here, alleles cannot be estimated in offspring, but it is possible to use the example above to estimate it.
<h3>What is a Punnett square?</h3>
A Punnett square is a diagram used in genetics to estimate genotypic and phenotypic frequencies in offspring from a given genetic cross.
In order to estimate offspring allele frequencies, we need to know parental genotypes by means of a Punnett square.
For example, if both parents are heterozygous for a gene whose alleles are called 'A' and 'a', the Punnett square in offspring is:
A a
A AA Aa
a Aa aa
In this case, 50% of offspring will be heterozygous (genotype 1/2 Aa), whereas 25% will be homo-zygous dominant (1/4 AA) and 25% will be homo-zygous recessive (1/4 aa).
In conclusion, as parent's genotypes are missing here, thereby alleles cannot be estimated in offspring, but you can use the example above to estimate it.
Learn more about the Punnett square here:
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Because most but not all 13 yrs olds and older smoke already and they just want to know if you have already smoked before
Cells<span> are the basic units of life. </span>Cells<span> can exist by themselves, like bacteria, or as part of a larger organism, like our </span>cells<span>. </span>Viruses<span> are non-living infectious particles, much smaller than a </span>cell, and need a living host to reproduce. The genetic material of thecell<span> is DNA, a double stranded helix.</span>
If there are two different alleles for a trait, this means t<span>he trait could show up in two different forms.</span>
