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11 kwi 2022 · Get free genetics worksheets, projects, quizzes, and printables. These resources target college, high school, and middle school. Topics include DNA and RNA, transcription and translation, Mendelian genetics, Punnett squares, incomplete dominance, and evolution.
Most genetic traits have a stronger, dominant allele and a weaker, recessive allele. In an individual with a heterozygous genotype, the dominant allele shows up in the offspring and the recessive allele gets covered up and doesn’t show. This is called complete dominance.
Use a Punnett Square to predict the most likely phenotypic ratio and genotypic ratio of their possible puppies. In fruit flies, red eyes are dominant (E). White-eyes are recessive (e). 4) A female fly has white eyes, and the male fly is homozygous dominant for red eyes.
In pea plants, round (R) is dominant to wrinkled (r). A heterozygous female is crossed with a wrinkled male. Make a Punnett Square to determine the possible offspring.
In cats, again, black color is dominant to a special, temperature-sensitive albino gene which produces cats with dark legs, faces and tails (Siamese cats, in case you don’t recognize it). A short haired (dominant) Siamese colored female is bred to a long-haired black male.
When an organism has the dominant phenotype, then its genotype can be either heterozygous or homozygous dominant (you can’t tell by looking at it). In order to find out we must do a test cross using an homozygous, recessive organism. For example: In Dalmatian dogs, the gene for black spots is dominant to the gene for liver colored spots. If a ...
Codominance Worksheet (Blood types) Human blood types are determined by genes that follow the CODOMINANCE pattern of inheritance. There are two dominant alleles (A & B) and one recessive allele (O).
