How many of their offspring is heterozygous A?

What is the offspring of heterozygous?

In other cases, each parent provides a different allele of a given gene, and the offspring is referred to as heterozygous (“hetero” meaning “different”) for that allele. Alleles produce phenotypes (or physical versions of a trait) that are either dominant or recessive.

How many heterozygous offsprings are produced?

In addition, crossing two individuals that are both heterozygous will yield, on average, 50 percent heterozygous offspring; half of the remaining offspring, on average, will be homozygous for the dominant allele and half homozygous for the recessive allele.

What genotype is blood type A?

If someone has blood type A, they must have at least one copy of the A allele, but they could have two copies. Their genotype is either AA or AO. Similarly, someone who is blood type B could have a genotype of either BB or BO.

What is the genotype of a person is heterozygous A?

An organism with one dominant allele and one recessive allele is said to have a heterozygous genotype. In our example, this genotype is written Bb.

What is the probability of a heterozygous offspring?

The possibilities are summarized: There is a 50% x 50% = 25% probability that both of the offspring’s alleles are dominant. There is a 50% x 50% = 25% probability that both of the offspring’s alleles are recessive. There is a 50% x 50% + 50% x 50% = 25% + 25% = 50% probability that the offspring is heterozygous.

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What is an example of a heterozygous?

If the two versions are different, you have a heterozygous genotype for that gene. For example, being heterozygous for hair color could mean you have one allele for red hair and one allele for brown hair. The relationship between the two alleles affects which traits are expressed.

What happens when cross 2 heterozygous?

Tutorial. The expected genotype ratio when two heterozygotes are crossed is 1 (homozygous dominant) : 2 (heterozygous) : 1 (homozygous recessive). … The heterozygotes have a phenotype distinct from normal cats.

How do you get heterozygous offspring?

When true-breeding, or homozygous, individuals that differ for a certain trait are crossed, all of the offspring will be heterozygous for that trait. If the traits are inherited as dominant and recessive, the F1 offspring will all exhibit the same phenotype as the parent homozygous for the dominant trait.

What cross will produce only heterozygous offspring?

The correct answer is (b) AA x aa. In this case 100% of the offspring will have the genotype Aa (heterozygous) with the dominant allele as the…

How do you find the percentage of heterozygous?

The percentage of heterozygous individuals (carriers) in the population. Answer: Since 2pq equals the frequency of heterozygotes or carriers, then the equation will be as follows: 2pq = (2)(.

  1. The frequency of the recessive allele. …
  2. The frequency of the dominant allele. …
  3. The frequency of heterozygous individuals.