1. The chromosomes divide unevenly, causing variation. Like, not all four of
the gametes have the same genetic info. The info in the two chromosomes of
the homologous pair are different, so the info that's sorted into the new
gametes are different.
In genetics, anticipation is a phenomenon whereby the symptoms of a
genetic disorder become apparent at an earlier age as it is passed on to the
next generation. In most cases, an increase of severity of symptoms is also
1. It results in a clone because there is no other genetic information involved in
the making of the offspring. It has the same DNA as the one before it. Rather
than having an input from two sources, one is given and it is original
2. The chromosom
They can do so because it takes light time to get here from those events. For
example, when studying a galaxy that's 500-million light years away from us
they're actually studying that galaxy as it *was* 500-million years ago. That's
Small changes are produced with c hanging frequency. Alleles are different form of same
gene. Hence for macroevolution, large changes are essential.
Gene pools contain all the alleles for the genome in the local population but not
1. A gene is a sequence of DNA that can be translated into a protein. An allele
is a version of a gene. A chromosome is just a name for the structure DNA in
a cell takes.
2. Linked genes lie along chromosomes in a linear array. Genes are mutable.
1. Sampling errors occur when only a small number of trials are
undertaken, resulting in an actual outcome that differs much from the
expected outcome due to chance alone. Therefore, the smaller the
population size, the smaller the number of trials
1. The oldest fossils usually have a spherical, cellular structure resembling that
of modern blue-green algae.
2. Methanogens have an incredible type of metabolism that can use H2 as an
energy source and CO2 as a carbon source for growth making the
With the advances we have in genetic testing it is closer to the similar genetic make up.
There are many organisms once considered one species until mitochondrial DNA testing
found them to be dissimilar and thus became published a