<span>Geologists searching for clues to the ancestors of modern-day vertebrate land animals should look in layer 2 , of the fossil beds.
As the fossils get older, the fossils will be buried deeper within the layer of the fossil beds. Within layer 2 of the fossil beds, Geologist could found the fossils that came from ancient sera Valli an age</span>
Answer:
a. The maternal copy of UBE3A is expressed and the paternal copy is silenced.
Explanation:
When UBE3A chromosome is in neurons, paternal allele is silent and maternal allele is expressed in process of genomic imprinting. In some cases UBE3A is expressed from both paternal and maternal chromosomes. The paternal chromosome is blue whereas maternal chromosome is magenta.
c.Chromatin in the nucleus condenses.
Prophase is the 1st stage. So in Prophase chromatin don't condence. It occurs at anaphase.
Polygenic is a<span> </span>trait<span> that is controlled by a group of </span>nonallelic <span>genes. </span>For example, humans can be many different sizes. Height is a polygenic trait, controlled by at least three genes with six alleles. If you are dominant for all of the alleles for height, then you will be very tall. ... Skin color is also a polygenic trait, as are hair and eye color. A trait that is controlled by a group of nonallelic <span>genes
</span>
