Being born with six fingers is actually a dominant trait and the probability of the children would be 75% with six
fingers and 25% with five fingers if both parents were heterozygous for that trait. If both parents were homozygous dominant for that trait then there is a 100% probability of the children being born with six fingers.
The probability that a child will be heterozygous depends on the parent's genotypes. If one parent is heterozygous (Aa) and the other is also heterozygous (Aa), then there is a 50% chance (1 out of 2 possible genotypes) that their child will be heterozygous. If both parents are homozygous (AA or aa), then all their children will be heterozygous.
It will depend on the genotype of the parents.
If both parents have the same genotype, say BB - then all of their children should also be BB.
If both parents are heterozygous, Bb - then 50% of their children should also be heterozygous (Bb), 25% BB and 25% bb.
If one parent is BB and the other bb - then all of their children will be heterozygous (Bb).
If the trait for six fingers is dominant then the odds are 3/4, if the trait is recessive then the odds are 1/4
50%
1/2
9:3:3:1 The probability of having both recessive traits is 1:16.
The probability would be 0.5 or 50%. A heterozygous woman will pass on the X chromosome with the recessive allele to 50% of her sons, and since the disorder is recessive, the son would only have the disorder if the X chromosome with the recessive allele is inherited from the mother.
The probability that a child is affected with galactosemia is 1/40,000. The probability that both children are affected would be (1/40,000) * (1/40,000) = 1/1,600,000,000.
The probability that a given child will have PKU is 25%. This is because both parents are carriers of the recessive allele (heterozygous), so there is a 25% chance that they will each pass on the recessive allele, resulting in the child having PKU.
The probability both twins are girls is 0.25 (0.5 * 0.5). Each girl will inherit half of the mother's genes, so there is a 0.25 chance they both inherit the galactosemia gene from their heterozygous mother. Therefore, the probability that they are both girls and have galactosemia is 0.25 * 0.25 = 0.0625 or 6.25%.
1/8 or 12.5%
The probability is 50%. There are four probabilities: dominant homozygous, recessive homozygous, or heterozygous.
The probability of offspring for two heterozygous dogs (Aa x Aa) is 25% homozygous dominant (AA), 50% heterozygous (Aa), and 25% homozygous recessive (aa) based on Mendelian genetics principles.
Impossible. You can only be heterozygous or homozygous, not both.
25%
The probability of obtaining a dominant phenotype from self-fertilization of a heterozygous individual is 75%. This is because in a heterozygous individual, there is a 50% chance of passing on the dominant allele and a 50% chance of passing on the recessive allele. With self-fertilization, the possible combinations are: 1 dominant allele (25%), 2 dominant alleles (50%), and 1 recessive allele (25%). Dominant phenotype will be expressed if there are one or more dominant alleles present.
If both parents are heterozygous for seed shape (Rr), their offspring would have a 75% chance of producing round seeds (3 out of 4 possible combinations), assuming round seeds (R) are dominant over wrinkled seeds (r).
3:4 or 75%
9:3:3:1 The probability of having both recessive traits is 1:16.
It is a 75% chance that the seeds will be round.
both parents could be A heterozygous or one A heterozygous and the other O
false