HEREDITY
MONOHYBRID CROSS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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DD
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Dd
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dd
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Detailed explanation-1: -Individuals who are homozygous dominant (DD) or heterozygous (Dd) are Rh+. Those who are homozygous recessive (dd) are Rh-(i.e., they do not have the key Rh antigens). Clinically, the Rh factor, like ABO factors, can lead to serious medical complications.
Detailed explanation-2: -Homozygous condition means that both the alleles are same. E.g., RR and rr. They can be of two types: homozygous dominant (e.g. RR) or homozygous recessive (e.g. rr).
Detailed explanation-3: -Background: The DD genotype gene is a linkage marker for an etiologic mutation at or near the angiotensin-converting enzyme gene and has been associated with increased risk for the development of coronary artery disease, left ventricular hypertrophy and left ventricular dilation after myocardial infarction.
Detailed explanation-4: -Homozygous recessive is a term used to describe an organism that carries two identical copies of the recessive gene.