Genes come in different varieties, called alleles. Somatic cells contain two alleles for every gene, with one allele provided by each parent of an organism. Often, it is impossible to determine which two alleles of a gene are present within an organism's chromosomes based solely on the outward appearance of that organism. However, an allele that is hidden, or not expressed by an organism, can still be passed on to that organism's offspring and expressed in a later generation.
A speices usaully can only breed with the same species unless it is done in a lab with their DNA and sometimes that doesnt work
martin Luther <span>john Calvin
</span>Protestant <span>Protestant
</span>theologian <span>theologian
</span>Christian <span>Christian</span>
Math English and maybe science
