Monohybrid Punnett Squares

Master monohybrid Punnett squares and predict offspring traits!

The Case of the Hairless Guinea Pig Watch the video. The first part should be a review of things you learned from investigating dragons. The second part shows you how we can predict what the offspring will be when we breed two guinea pigs. The method of using Punnett Squares can be applied to any living thing, including people. Punnett Square #1 - Complete the Punnett square for the hair allele in heterozygous guinea pigs HH Hh Hh hh Punnett Square #1 -What percent of the babies had the homozygous dominant genotype (HH) ? 0% or none 25% or 1 50% or 2 75% or 3 100% or 4 Punnett Square #1 -What percent of the babies had the heterozygous dominant genotype (Hh) ? 0% or 0 25% or 1 50% or 2 75% or 3 100% or 4 Punnett Square #1 -What percent of the babies had the homozygous recessive genotype (hh) ? 0% or 0 25% or 1 50% or 2 75% or 3 100% or 4 Punnett Square #1 -What percent of the babies had hair? 0% or 0 25% or 1 50% or 2 75% or 3 100% or 4 Punnett Square #1 -What percent of the babies were hairless? 0% or 0 25% or 1 50% or 2 75% or 3 100% or 4 Punnett Square #2 -Guinea Pig Fur ColorBreed a homozygous recessive mother (ff) with a homozygous dominant father (FF). Remember, black fur (F) is dominant over gray fur (f). Use the letter f to represent fur color. F is dominant for black fur. f is recessive for gray fur. When creating the Punnett square on-line, always place the dominant allele or capital letter on the left or at the top. Place the recessive allele or lower case letter on the right or at the bottom. Refer to the Amoeba Sisters video for a demonstration. F F f f Ff Ff Ff Ff Punnett Square #2 -What percentage of the offspring had the genotype FF ? (homozygous dominant) 0% or 0 25% or 1 50% or 2 75% or 3 100% or 4 Punnett Square #2 -What percentage of the offspring had the genotype Ff ? (heterozygous ) 0% or 0 25% or 1 50% or 2 75% or 3 100% or 4 Punnett Square #2 -What percentage of the offspring had the genotype ff ? (homozygous recessive ) 0% or 0 25% or 1 50% or 2 75% or 3 100% or 4 Punnett Square #2 -What percentage of the offspring had black fur ? 0% or 0 25% or 1 50% or 2 75% or 3 100% or 4 Punnett Square #2 -What percentage of the offspring had gray fur ? 0% or 0 25% or 1 50% or 2 75% or 3 100% or 4 Guinea Pig Fur ColorPunnett Square #3 -Breed a heterozygous mother (Ff) with a heterozygous father (Ff). Remember, black fur (F) is dominant over gray fur (f). Use the letter f to represent fur color. F is dominant for black fur. f is recessive for gray fur. When creating the Punnett square on-line, always place the dominant allele or capital letter on the left or at the top. Place the recessive allele or lower case letter on the right or at the bottom. Refer to the Amoeba Sisters video for a demonstration. F f F f FF Ff Ff ff Punnett Square #3 -What percentage of the offspring had the genotype FF ? (homozygous dominant) 0% or 0 25% or 1 50% or 2 75% or 3 100% or 4 Punnett Square #3 -What percentage of the offspring had the genotype Ff ? (heterozygous ) 0% or 0 25% or 1 50% or 2 75% or 3 100% or 4 Punnett Square #3 -What percentage of the offspring had the genotype ff ? (homozygous recessive ) 0% or 0 25% or 1 50% or 2 75% or 3 100% or 4 Punnett Square #3 -What percentage of the offspring had black fur ? 0% or 0 25% or 1 50% or 2 75% or 3 100% or 4 Punnett Square #3 -What percentage of the offspring had gray fur ? 0% or 0 25% or 1 50% or 2 75% or 3 100% or 4 Guinea Pig Fur ColorPunnett Square #4 -Breed a heterozygous mother (Ff) with a homozygous dominant father (FF). Remember, black fur (F) is dominant over gray fur (f). Use the letter f to represent fur color. F is dominant for black fur. f is recessive for gray fur. When creating the Punnett square on-line, always place the dominant allele or capital letter on the left or at the top. Place the recessive allele or lower case letter on the right or at the bottom. Refer to the Amoeba Sisters video for a demonstration. F F F f FF FF Ff Ff Punnett Square #4 -What percentage of the offspring had the genotype FF ? (homozygous dominant) 0% or 0 25% or 1 50% or 2 75% or 3 100% or 4 Punnett Square #4 -What percentage of the offspring had the genotype Ff ? (heterozygous ) 0% or 0 25% or 1 50% or 2 75% or 3 100% or 4 Punnett Square #4 -What percentage of the offspring had the genotype ff ? (homozygous recessive ) 0% or 0 25% or 1 50% or 2 75% or 3 100% or 4 Punnett Square #4 -What percentage of the offspring had black fur ? 0% or 0 25% or 1 50% or 2 75% or 3 100% or 4 Punnett Square #4 -What percentage of the offspring had gray fur ? 0% or 0 25% or 1 50% or 2 75% or 3 100% or 4 Guinea Pig Fur ColorPunnett Square #5 -Breed a homozygous recessive mother (ff) with a heterozygous father (Ff). Remember, black fur (F) is dominant over gray fur (f). Use the letter f to represent fur color. F is dominant for black fur. f is recessive for gray fur. When creating the Punnett square on-line, always place the dominant allele or capital letter on the left or at the top. Place the recessive allele or lower case letter on the right or at the bottom. Refer to the Amoeba Sisters video for a demonstration. F f f f Ff ff Ff ff Punnett Square #5 -What percentage of the offspring had the genotype FF ? (homozygous dominant) 0% or 0 25% or 1 50% or 2 75% or 3 100% or 4 Punnett Square #5 -What percentage of the offspring had the genotype Ff ? (heterozygous ) 0% or 0 25% or 1 50% or 2 75% or 3 100% or 4 Punnett Square #5 -What percentage of the offspring had the genotype ff ? (homozygous recessive ) 0% or 0 25% or 1 50% or 2 75% or 3 100% or 4 Punnett Square #4 -What percentage of the offspring had black fur ? 0% or 0 25% or 1 50% or 2 75% or 3 100% or 4 Punnett Square #5 -What percentage of the offspring had gray fur ? 0% or 0 25% or 1 50% or 2 75% or 3 100% or 4