Answer:
Definition:
Biological evolution is the process through which the characteristics of organisms change over successive generations, by means of genetic variation and natural selection. It is most commonly defined as "changes in gene frequencies in populations."
A small change in genes could result in a mass epidemic. Such as the colinistists bringing yellow fever over to America.
Explanation:
Biological evolution refers to the cumulative changes that occur in a population over time. These changes are produced at the genetic level as organisms' genes mutate and/or recombine in different ways during reproduction and are passed on to future generations.
<span>The site for reading and decoding genetic information is ribosomes. The codons from the tRNA is paired with its anti-codon composed both of nitrogen basis resulting to sets of amino acids that are built into proteins. These amino acids together with phosphate groups make-up DNA. </span>
Answer:
1/2
Explanation:
let the alleles of the heterozygous woman without hemophilia be = Xhx
And the alleles of the man with hemophilia be XhY
If both XhY × Xhx; we have:
Xh Y
Xh XhXh XhY
x Xhx xY
XhXh and XhY are affected by the diseases
Xhx is a carrier
xY is normal
∴ the probability(chance) that their first child will have the disease is 2/4 of the total offspring
=1/2
∴ the probability (chance) that their first child will have the disease is 1/2
