CELL DIVISION
MEIOSIS AND GENETIC VARIATION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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genotype (the information on a gene)
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phenotype (the observable traits)
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Detailed explanation-1: -An organism can be homozygous dominant, if it carries two copies of the same dominant allele, or homozygous recessive, if it carries two copies of the same recessive allele. Heterozygous means that an organism has two different alleles of a gene.
Detailed explanation-2: -An organism with two dominant alleles for a trait is said to have a homozygous dominant genotype. Using the eye color example, this genotype is written BB. An organism with one dominant allele and one recessive allele is said to have a heterozygous genotype.
Detailed explanation-3: -Homozygous: You inherit the same version of the gene from each parent, so you have two matching genes. Heterozygous: You inherit a different version of a gene from each parent. They do not match.
Detailed explanation-4: -If it’s dominant, it means only one mutated copy is needed to result in disease. This is called a “dominant disease” or “dominant disorder.” If you’re heterozygous for a dominant disorder, you have a higher risk of developing it. On the other hand, if you’re heterozygous for a recessive mutation, you won’t get it.