Answer:
by separating the most important ideas from the detailed text
Let's work this out with a punnett square:
So if we have a white eye female and this trait is sex-linked, what will be her genotype?
Since the male is red-eyed and this trait is sex-linked, what will be his genotype?
After that, we can set up the punnett square together
Dating of the fossil has led to the discovery
of species that existed in the past but
became extinct. The fossils indicate that
the earliest species were different phenotypically
and genetically from today's species
hence supporting the theory of evolution.
The dating of fossils
does not support the gradual modification of organisms into new species as explicated in the theory of evolution and
speciation by Darwin. The numerous
discovered fossils exhibit a nonconstancy
of species without phyletic gradualism.
On the one hand, relative dating compares two or more
fossils and compares their ages relative to one another. Biostratigraphy and stratigraphy
techniques are used relative dating. On the other hand, absolute dating uses radiometric dating and carbon dating to ascertain the real age of a
fossil. Example of relative dating is comparing the sediment layers of rocks to determine which is older. An example of absolute dating is the use of half-life of 14C to determine the age of a
rock.
Punctuated equilibrium is a counter theory to Darwin's speciation theory. It explicates that species remain constant
over a long period of time before a particular
period when there emerges numerous variants, some of which survive and some
of which become extinct. This is as opposed
to the smooth gradual modification of
species by Darwin.
<span>The operon binds to the RNA polymerase and releases the repressor.</span><span>
Amino acids like tryptophan and tyrosine are used to produce neurotransmitters and other products. Hormones such a serotonin and melatonin are made products of tryptophan as well as norepinephrine and adrenalin.</span>
Answer:
1. No, the process independent assortment randomly segregate the maternal and paternal chromosomes to different gametes.
2. No, the process of crossing over generates recombinant chromatids.
Explanation:
1. During anaphase-I of meiosis-I, the random segregation of maternal and paternal chromosomes to the opposite poles of the cell occurs. This process randomly distributes the homologous chromosomes of a pair to the gametes. Therefore, the progeny obtains some new combinations of maternal and paternal chromosomes that were not present in their parents. Further, the process of random fusion of these gametes adds more new combinations of chromosomes.
2. The process of crossing over generates the recombinant chromatids during prophase-I. This produces some new allele combinations on the chromosomes which were not present in the parental chromosomes.