No. A recessive gene can be inherited from one parent, a dominant from another, or two alike dominants. (No such thing as two alike recessive, the gene with the furthest back dominant gene. Say a blonde little girl has a blonde hybrid mother and a brown hybrid father. She ended up getting brown recessive. Since both of her parents were hybrid, she only had a recessive hair color gene from one parent.
B (dominant) is for brown and b (recessive) is for blue. If both parents have brown eyes, for them to have a blue-eyed child their genotypes (the combination of b's) must both be Bb, because they both need to provide a little b (to have blue eyes you must be double recessive (bb)). This is worked out using a Punnett Square. (example: https://mcglynn-bioreview4.wikispaces.com/file/view/basicpunnetsquare.jpg)
In genetics, dominant traits are typically represented by a capital letter, while recessive traits are represented by a lowercase letter. For example, "B" might represent brown eyes as a dominant trait, while "b" represents blue eyes as a recessive trait.
Oh, isn't that a happy little question! The probability of producing a gamete with the allele for attached earlobes depends on the individual's genetic makeup. If the individual is heterozygous for the trait (Aa), the probability would be 50%. If they are homozygous dominant (AA), the probability would be 0%, and if they are homozygous recessive (aa), the probability would be 100%. Just like painting, genetics can be a beautiful and fascinating landscape to explore.
Oh honey, there's no one-size-fits-all answer to that. It all depends on the trait we're talking about. Some genes are dominant and will always show up in the offspring, while others are recessive and need both parents to pass them on. So, it's like asking which Golden Girl is the sassiest - it all depends on the situation, darling.
1. Shape of face (probably polygenic) Oval dominant, square recessive 2. Cleft in chin No cleft dominant, cleft recessive 3. Hair curl (probably polygenic) Assume incomplete dominance Curly: homozygous Wavy: heterozygous Straight: homozygous 4. Hairline Widow peak dominant, straight hairline recessive 5. Eyebrow size Broad dominant, slender recessive 6. Eyebrow shape Separated dominant, joined recessive 7. Eyelash length Long dominant, short recessive 8. Dimples Dimples dominant, no dimples recessive 9. Earlobes Free lobe dominant, attached recessive 10. Eye shape Almond dominant, round recessive 11. Freckles Freckles dominant, no freckles recessive 12. Tongue rolling Roller dominant, nonroller recessive 13. Tongue folding Inability dominant, ability recessive 14. Finger mid-digital hair Hair dominant, no hair recessive 15. Hitch-hiker's thumb Straight thumb dominant, hitch-hiker thumb recessive 16. Bent little finger Bent dominant, straight recessive 17. Interlaced fingers Left thumb over right dominant, right over left recessive 18. Hair on back of hand Hair dominant, no hair recessive 19. Tendons of Palmar Muscle Two tendons dominant, three tendons recessive
No. A recessive gene can be inherited from one parent, a dominant from another, or two alike dominants. (No such thing as two alike recessive, the gene with the furthest back dominant gene. Say a blonde little girl has a blonde hybrid mother and a brown hybrid father. She ended up getting brown recessive. Since both of her parents were hybrid, she only had a recessive hair color gene from one parent.
yes, if two Bb parents have kids, there is a 3:1 ratio that their children will show a dominant trait (BB Bb Bb bb). For multiple alleles (3 or more) it gets a little more complicated. Some traits, like height, have 1000's of genes affecting them. Consult your biology teacher for more information.Yes. Because to have a dominant trait you can have two dominant alleles or just one dominant and one recessive (because a dominant allele negates the effect of a recessive allele.) To get a recessive trait it takes two recessive alleles as oppose to a dominant trait where it takes only 1 to have a dominant trait. Therefore Dominant traits are more common.
A sex linked dominant trait could be on the X chromosome of either parent and the phenotype of any individual carrier would be that of the dominant trait. A father with the dominant characteristic on his single X chromosome would produce daughters that are 100% carriers and would not pass the characteristic on to his sons. A mother who is a dominant X linked carrier would pass the dominant characteristic on to half hersons and half her daughters all of which would show the trait phenotypically. A sex linked recessive father would produce 100% carrier daughters. His sons would not get the recessive allele from him. A sex linked recessive carrier (heterozygous) mother would pass the trait on to 50% of her children and 50% of her sons would show the recessive trait genetics.
B (dominant) is for brown and b (recessive) is for blue. If both parents have brown eyes, for them to have a blue-eyed child their genotypes (the combination of b's) must both be Bb, because they both need to provide a little b (to have blue eyes you must be double recessive (bb)). This is worked out using a Punnett Square. (example: https://mcglynn-bioreview4.wikispaces.com/file/view/basicpunnetsquare.jpg)
The 14th degree ring should be worn on the little finger of your non-dominant hand.
Traditionally on the little finger of your non dominant hand ie if right handed on your left little finger
Yes because if the phenotype is recessive there is only one possible genotype, little letter little letter ex. rr (wrikled pea plant seed), cc (albino), tt (short pea plant) whereas if you have a dominante phenotype there are two possible genotypes, big letter big letter or big letter little letter ex. RR Rr (round pea plant seed), CC Cc (normal skin pigmentation) TT Tt (Tall Pea plant)
In genetics, dominant traits are typically represented by a capital letter, while recessive traits are represented by a lowercase letter. For example, "B" might represent brown eyes as a dominant trait, while "b" represents blue eyes as a recessive trait.
the 2 alleles of the gene for the trait are different on the 2 homologous chromosomesBeing heterozygous for a trait means that they have different alleles for a trait. For instance: Tt would be heterozygous and TT or tt would be homozygous because they are both eitehr little or big t's.it mean the gene is not pure or for example suppose a person is blood group A but actually he is having A and O; because O is recessive trait the gene express the A trait instead, making the person having blood group A.
Oh, isn't that a happy little question! The probability of producing a gamete with the allele for attached earlobes depends on the individual's genetic makeup. If the individual is heterozygous for the trait (Aa), the probability would be 50%. If they are homozygous dominant (AA), the probability would be 0%, and if they are homozygous recessive (aa), the probability would be 100%. Just like painting, genetics can be a beautiful and fascinating landscape to explore.
Oh honey, there's no one-size-fits-all answer to that. It all depends on the trait we're talking about. Some genes are dominant and will always show up in the offspring, while others are recessive and need both parents to pass them on. So, it's like asking which Golden Girl is the sassiest - it all depends on the situation, darling.