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☆☆☆☆☆polygenic
This is called co-dominance. This is when 2 or more alleles are expressed at the same time. In other words they both affect the phenotype. In the example of human blood ABO type we have an allele for A = IA, B= Ib O=i
IAIb = AB blood type
IbIb = B blood type
Iai = A
IaIa = A bloody type
Ibi = B blood type
ii = O blood type
Reddish-white horse
dihybrid cross
Down syndrome (trisomy 21) is a disorder associated with an error in the number of chromosomes present. Other examples of disorders associated with an error in the number of chromosomes are Trisomy 18 (Edwards Syndrome), Trisomy 13 (Patau Syndrome), Triple X syndrome, and Klinefelter Syndrome.
cystic fibrosis (:
cystic fibrosis :)
cystic fibrosis ^-^
Two different alleles for the same trait are heterozygous.
No, Its homozygous. This answer is incorrect as homo = same.
non disjunction of sex chromosomes
A+ Neither parent can have type O blood
