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Which punnett square shows the result of a cross between two heterozygous parents?
A cross between two heterozygous parents (eg. Gg X Gg) would result in a phenotypic ratio of 3 dominant : 1 recessive, and a genotypic ratio of 1GG:2Gg:1gg.GgGGGGggGggg
Would it stilll be considered purebred if you crossed purebred dominant and purebred recessive?
If you cross a purebred dominant and a purebred recessive individual, the offspring would be considered hybrids, not purebreds. Purebreds result from breeding within the same purebred line, whereas hybrids are the result of crossing individuals from two different purebred lines.
What is the result of two recessive alleles joined?
When two recessive alleles are joined together in an individual, the individual will display the recessive trait associated with those alleles. This is because recessive alleles only express themselves when a dominant allele is not present.
If a homozygous dominant is crossed with a homozygous recessive for a given trait the offspring will be?
The phenotype will show the dominant trait. All dominant traits mask recessive ones; If the genotype is heterozygous (One dominant and one recessive) the organism's phenotype will be dominant.
How would a recessive trait show up in a cross between two individuals with a dominant phenotype?
In a cross between two individuals with a dominant phenotype but carrying a recessive trait, the recessive trait would not be visibly expressed in the offspring (since they don't inherit two copies of the recessive allele). However, they would be carriers of the recessive trait, meaning they could pass it on to future generations.
What is the name for a cross between an individual of unknown genotype and a homozygous recessive?
A cross between a homozygous recessive and an individual of unknown genotype is called a test cross.The homozygous recessive can only pass on a recessive allele to the offspring, and so any recessive in the other parent will show up in the phenotype (detectable characteristics) of some of the offspring.
If a test cross between a homozygous recessive and heterozygous allele will yield what percent of offspring as homozygous recessive?
A test cross between a homozygous recessive and a heterozygous individual will yield 50% of offspring as homozygous recessive. This is because all the offspring will inherit one recessive allele from the homozygous recessive parent.
To determine the genotype of an individual that shows the dominant phenotype you would cross that individual with one that is?
To determine the genotype of an individual that shows the dominant phenotype you would cross that individual with one that is homozygous recessive. A monohybrid cross of two individuals that are heterozygous for a trait exhibiting complete dominance would probably result in a phenotype ratio is 3 dominant 1 recessive.
Which punnett square shows the result of a cross between two heterozygous parents?
A cross between two heterozygous parents (eg. Gg X Gg) would result in a phenotypic ratio of 3 dominant : 1 recessive, and a genotypic ratio of 1GG:2Gg:1gg.GgGGGGggGggg
What is the probability that offspring of a cross between a homozygous recessive parent and a hetezyguous parent will be homozygous recessive?
In a cross between a homozygous recessive parent (AA) and a heterozygous parent (Aa), the possible genotypes of the offspring are 50% homozygous recessive (AA) and 50% heterozygous (Aa). Therefore, the probability that an offspring will be homozygous recessive is 50%.
Would it stilll be considered purebred if you crossed purebred dominant and purebred recessive?
If you cross a purebred dominant and a purebred recessive individual, the offspring would be considered hybrids, not purebreds. Purebreds result from breeding within the same purebred line, whereas hybrids are the result of crossing individuals from two different purebred lines.
What is the result of two recessive alleles joined?
When two recessive alleles are joined together in an individual, the individual will display the recessive trait associated with those alleles. This is because recessive alleles only express themselves when a dominant allele is not present.
What is the probability of a homozygous recessive offspring?
It depends. If it's a heterozygous cross, (Tt x Tt), there's a 25% chance. If it's a homozygous dominant cross (TT x TT), the chance is 0%. Neither parent has the alleles for a recessive trait, so none of their offspring can have the recessive trait. If it's a homozygous recessive cross (tt x tt), there's a 100% chance. The only alleles the parents can pass on are recessive.
Which allele (gene) exhibits its trait only when it is paired with another allele in a genetic cross?
Recessive allele exhibits its trait only when paired with another recessive allele in a genetic cross.
A test cross made with a cat that may be heterozygous for a recessive trait what is the presumed genotype of the cat explain?
If the cat is suspected to be heterozygous for a recessive trait, the presumed genotype would be Aa, where A represents the dominant allele and a represents the recessive allele. This means the cat has one dominant allele and one recessive allele for the trait in question. The test cross would involve crossing this cat with a homozygous recessive individual to determine the genotype of the cat.
What fraction of the cross in figure 10-7 will be recessive for both traits?
If the traits are both recessive and independently assorting, then 1/16 of the offspring will be recessive for both traits in a dihybrid cross (1/4 for each individual trait, multiplied together).
What is the outcome of monohybrid cross AAxaa?
This is 100% for heterozygous when referring to genes.
