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1.
2.
3. define codominance
describe the two traits that are seen during the
production of third phenotype
appreciate the importance why we need to know
codominace
4. a.Allele -- each inherited feature in an individual is produced by a
pair of genes or allele. Which are located on the chromosomes
b.Genes-- the subunits of chromosomes; consists of lengths of
DNA which control the hereditary characteristics of organisms.
c.Genotype-- the genetic composition of an organism; the
particular set of alleles in each cell.
d.Phenotype-- the physical characteristics of an organism from
the influence of the genotype and environment.
5. e. Dominant--use of one of a pair of alleles always
expressed in a phenotype, the other allele being
described as recessive
f. Recessive-- one pair of alleles that is only expressed in
a homozygous phenotype.
g.Antigens-a substance, usually a protein,
microorganisms such as bacteria and fungi that exhibit
the growth of other microorganisms.
6.
7. is another pattern of inheritance. This results
when one allele is not dominant over the other.
The resulting heterozygote exhibit the traits of
both parents
8. is a condition when two dominant traits are
expressed at the same time, producing a third
phenotype.
9.
10.
11. On the surface of our red blood cells
are proteins bound to sugar molecules,
forming complexes called antigens.
12. •One group of allele are controlled by a pair
of alleles, LM and LN. The pairing of this
alleles will determine the blood type of an
individual, and there are three: M, MN, N.
13. Note that in the heterozygote condition, both LM and LN
alleles are expressed in that the red blood cells will have
the M and N antigen. Just like in incomplete dominance,
the genotypic ratio in codominance also becomes the
phenotypic
BLOODTYPE GENOTYPE
M LM LM
MN LM LN
N LN LN
14. EXAMPLE:
Another is codominance is best exemplified by the
inheritance of coat (fur) color in horses, when a white
horse is crossed with red horse, when a white horse
is crossed with a red horse, the resulting F1
generation all exhibit a color called roan.
15. •And in codominace, both alleles are
expressed equally in the phenotype of the
heterozygote. And roan refers to horses
with red and white blotches
16.
17. 1. Is another pattern of inheritance. This results when one
allele is not dominant over the other?
2. On the surface of our red blood cells are proteins bound
to sugar molecules, forming complexes called
3. The physical characteristics of an organism
4. The genetic composition of an organism.
5. The subunits of chromosomes.
18. 1. What is multiple alleles?
2. Give at least 3 examples for multiple alleles.
