HEREDITY
MONOHYBRID CROSS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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one trait is crossed.
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two traits are crossed.
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four boxes are needed for the punnett square.
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mom’s alleles are dominant.
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Detailed explanation-1: -A dihybrid cross describes a mating experiment between two organisms that are identically hybrid for two traits. A hybrid organism is one that is heterozygous, which means that is carries two different alleles at a particular genetic position, or locus.
Detailed explanation-2: -In a dihybrid cross, the parents carry different pair of alleles for each trait. One parent carries homozygous dominant allele, while the other one carries homozygous recessive allele.
Detailed explanation-3: -Dihybrid cross is a cross between two individuals with two observed traits that are controlled by two distinct genes. The idea of a dihybrid cross came from Gregor Mendel when he observed pea plants that were either yellow or green and either round or wrinkled.
Detailed explanation-4: -For monohybrid cross, Mendel began with a pair of pea plants with two contrasting traits, i.e., one tall and another dwarf. The cross-pollination of tall and dwarf plants resulted in tall plants.
Detailed explanation-5: -Dominant traits always present in the organism’s physical appearance, while recessive traits are hidden or masked by the dominant traits.