Bellringer: Complete the Punnett Square In Roses having thorns is dominant to not having thorns. Use the punnett square to predict the probability that the offspring produced between two heterozygous roses will have thorns. T t T t 1 Genotype: 25% Homozygous TT 50% Heterozygous Tt 25% Homozygous tt Phenotype: 75% Thorns 25% No Thorns TT Tt Tt tt
Bellringer : Complete the Punnett Square. In Roses having thorns is dominant to not having thorns. Use the punnett square to predict the probability that the offspring produced between two heterozygous roses will have thorns. T t T t. Genotype: 25% Homozygous TT - PowerPoint PPT Presentation
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Bellringer: Complete the Punnett SquareIn Roses having thorns is dominant to not having thorns. Use
the punnett square to predict the probability that the offspring produced between two heterozygous roses will have thorns.
Bellringer: Complete the Punnett SquareR- Red flowersr- white flowers
R R
R
r
RR RR
Rr Rr
Genotype:50% Homozygous RR50% Heterozygous Rr
Phenotype:100% Red Flowers
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Asexual vs. Sexual Reproduction
-REVIEW: What is Heredity? The passing of traits from parents to the offspring.-MAKE CONNECTIONS:How is heredity related to reproduction?Parents create offspring through reproduction which enables them to pass their traits to the next generations.
Sexual ReproductionSexual
Reproduction
1. 2 parents: Male and Female
2. Gametes are created through Meiosis: sperm (male)and egg(female)
3. Sperm and egg join= fertilization. After fertilization occurs the fertilized egg develops into the offspring.
4. Offspring look different from parent (mixed DNA)
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Sexual ReproductionMeiosis- process of cell division that creates reproductive cells (gametes)with ½ the number of chromosomes as the original parent cell.