<span>Yeast has the most important percentage of adenine with 31.3%, comparing to human which has 30.9% and other species like Streptococcus, Herring, and E.coli.
Generally, the percentage of adenine and thymine are equal, because they are linked together in the DNA, and the guanine and cytosine percentage are equal too. So if we have the percentage of adenine in the DNA of a species, we can figure out the other percentages.</span>
What phenotypic ratio would you expect as a result of a test cross between a dihybrid organism and one that is homozygous recessive for alleles at two independent loci?
a. 3:1
b. 9:3:3:1
c. 1:1:1:1
d. 1:2:1
e. 9:4:2:1
Answer:
c. 1:1:1:1
Explanation:
When a heterozygous individual for two genes is test crossed with a double homozygous recessive individual, the progeny is obtained in 1:1:1:1 phenotypic ratio. This occurs as the heterozygous dominant individual forms four types of gametes in 1:1:1:1 ratio while the homozygous recessive individual would form only one type of gamete having one recessive allele for each gene.
For example, a test cross between TtRr (tall and red) and ttrr (short and white) would produce a progeny in following ratio=
1 tall, red: 1 tall, white: 1 short, red: 1 short, white
Here, T= tall, t= short, R= red, r= white
Answer:
Motor skill develop through the interaction of body system specifically sensory, perception and biochemical systems
Homozygous for allele A and heterozygous for allele B. So the answer would surly be D.
The red blood cell will be more exposed to oxygen making it a lighter color. ur veins r full of dark red blood and white blood cells (which are donut shaped)