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What does the principal of dominant and recessive mean?
Dominant when spoken of as a principle usually refers to the characteristics of genes and alleles (different forms of genes). A dominant trait for example would mask the expression of another. For example a brown eyed mother and a blue eyed father will have a brown eyed baby because brown is dominant and masks the fathers blue eyed gene.
What alleles for hair length could egg cells possibly have?
Egg cells could carry alleles for hair length that are either dominant or recessive. For instance, if we consider 'L' as the dominant allele for long hair and 'l' as the recessive allele for short hair, egg cells could potentially have genotypes of either 'L' or 'l'. Therefore, the possible alleles for hair length in egg cells are L and l.
How Do recessive and dominant alleles get filled into a punnet square?
here is an example: key: dark hair - H (dominant) light hair - h (recessive) father: Hh mother: hh father's alleles: H & h mother's alleles: all h punnet square: father's __H____l____h_____ Mothers: h l Hh l hh The father's dominant H allele combines with the mother's h allele produces Hh The father's reccesive h allele combins with the mother's h allele produces hh therefore the possible combinations of alleles are Hh and hh. 1/2 of their children will have dark hair and 1/2 of their children will have light hair
What is the phenotype ratio for the cross of Ll cactus?
I don't know what trait is being measured here so I am going to pretend that it is height, where L is the tall allele and l is the short allele. You get: LL: 1/4 Ll: 1/2 ll: 1/4 This is the GENOTYPE ratio. Assuming L is dominant and l is recessive, the GENOTYPE ratio would be Tall: 3/4 Short: 1/4 You can confirm this by making a Punnet square
Are allergies recessive or dominant?
Allergies are relatively common. Both genetics and environmental factors play a role. Allergy is caused by an oversensitive immune system, which leads to a misdirected immune response. Found at http://www.ask.com/web?q=are+allergies+hereditary%3F&search=&qsrc=0&o=0&l=dir you should go there if you need more info
What does the principal of dominant and recessive mean?
Dominant when spoken of as a principle usually refers to the characteristics of genes and alleles (different forms of genes). A dominant trait for example would mask the expression of another. For example a brown eyed mother and a blue eyed father will have a brown eyed baby because brown is dominant and masks the fathers blue eyed gene.
What alleles for hair length could egg cells possibly have?
Egg cells could carry alleles for hair length that are either dominant or recessive. For instance, if we consider 'L' as the dominant allele for long hair and 'l' as the recessive allele for short hair, egg cells could potentially have genotypes of either 'L' or 'l'. Therefore, the possible alleles for hair length in egg cells are L and l.
If short hair L is dominant to long hair l animals LL and Ll have the same what?
If short hair, represented by L, is the dominant trait, then both animals with LL genes and Ll genes will have short hair because they have the short hair gene. The Ll animal, however, may have a long haired offspring if they mate with another animal carrying the long hair gene and they both pass it on.
If short hair (L) is dominant to long hair (I) ,animals with LL and Ll have the same?
LL and Ll will both express the dominant gene, in this case short hair. Only an animal with both recessive genes (ll) will have long hair.
What kind of cross is RrLl x RrLl?
The cross RrLl x RrLl involves two traits, each with two alleles. This is a dihybrid cross where R and r represent one gene (with R being dominant) and L and l represent another gene (with L being dominant). The expected phenotypic ratio for this cross is typically 9:3:3:1, indicating the combinations of dominant and recessive traits for both genes.
What an inch?
Bend your thumb-the top part. DIAGRAM l = thumb - <----- an inch (top part of thumb) `
What makes an inch?
Bend your thumb-the top part. DIAGRAM l = thumb - <----- an inch (top part of thumb) `
How Do recessive and dominant alleles get filled into a punnet square?
here is an example: key: dark hair - H (dominant) light hair - h (recessive) father: Hh mother: hh father's alleles: H & h mother's alleles: all h punnet square: father's __H____l____h_____ Mothers: h l Hh l hh The father's dominant H allele combines with the mother's h allele produces Hh The father's reccesive h allele combins with the mother's h allele produces hh therefore the possible combinations of alleles are Hh and hh. 1/2 of their children will have dark hair and 1/2 of their children will have light hair
What is wrong with Samuel L Jackson's thumb?
Smashed
How and why a thumb is an adaptation?
it helps the human to hold things. without the thumb, you wouldn't be able to do many things with your hands.
What is the phenotype ratio for the cross of Ll cactus?
I don't know what trait is being measured here so I am going to pretend that it is height, where L is the tall allele and l is the short allele. You get: LL: 1/4 Ll: 1/2 ll: 1/4 This is the GENOTYPE ratio. Assuming L is dominant and l is recessive, the GENOTYPE ratio would be Tall: 3/4 Short: 1/4 You can confirm this by making a Punnet square
How can a lethal gene be passed from one generation to the other?
If the lethal gene is recessive, and the parent carrying it is heterozygous for that gene, it can be passed down to offspring in the recessive form. If the mate of the parent happens to be carrying the same gene heterozygously, 50% of offspring will be expected to inherit the recessive lethal gene heterozygously. 25% of the offspring will be expected to inherit the lethal gene homozygously, leading to death. The remaining 25% of offspring we will expect to homozygously inherit the non-lethal gene. 1:2:1 ratio
