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Some animals such as cows normally produce only one offspring from each mating If a cow showed a dominant phenotype why would a typical testcross be a difficult way to determine the genotype?
Because a cow only produces one offspring at a time, not several like mice, cats, dogs, flies or frogs do. In order to have a successful test cross, the species of animal used must have at least 10 to 20 offspring to study from.
How could a guinea pig breeder whether a rough-coated guinea pig is homozygous or heteorzygous for this trait?
A breeder could determine if a rough-coated guinea pig is homozygous or heterozygous by conducting a test mating. Breeding the rough-coated guinea pig with a smooth-coated guinea pig would show if the rough coat is dominant or recessive. If all the offspring have rough coats, it indicates the rough-coated guinea pig is homozygous for the trait. If both rough and smooth-coated offspring are produced, then the rough-coated guinea pig is heterozygous.
What are a lion's mating habits?
Lions are typically polygynous, with a dominant male forming a pride of females for mating. Mating can occur multiple times a day for several days during a female's estrus cycle. The dominant male in the pride will fiercely protect access to the females from other males.
Do mother cats mate with their offspring?
Yes, mother cats do mate with their offspring. I had cat which had become so old that my family members used to call her grandmother cat. I had once seen her mating with her offspring and THEIR offspring at different times!
How do capuchins reproduce?
Capuchins reproduce through sexual reproduction, with females giving birth to usually one offspring at a time after a gestation period of about 160 to 180 days. Mating occurs when females are in estrus and a dominant male will typically mate with multiple females in a group. The offspring are cared for by the mother and occasionally other group members.
What becomes of a YY genotype?
In mice the YY genotype is lethal during embryonic development. This means that the mating of heterozygous individuals will produce a ratio of 2:1 Yy to yy offspring.A 'YY' genotype is homozygous dominant for that particular trait. If it is Yy, it will be heterozygous.
What cross shows homozygous dominant mating with heterozygous?
AA (dominant) mating with aa (recessive) -----> Aa
What are the predicted ratio of ofsprings in a mating of AAA and AAA?
The predicted ratio of offspring in a mating of AAA and AAA would be 100% AAA. Since both parents have the same genotype, all of their offspring will inherit the same genotype.
What would mating between a true breeding purple flowered pea plant and a true breeding white flowered pea plant produce?
Make a Punnet Square:White HETEROZYGOUS---WwRed HOMOZYGOUS--ww (this one is recessive because the white characteristic dominated in the heterozygous type)So:W ww Ww www Ww wwThese four are the potential types of the offspring, they will either be HETEROZYGOUS WHITE or HOMOZYGOUS RED, no homozygous white
Some animals such as cows normally produce only one offspring from each mating If a cow showed a dominant phenotype why would a typical testcross be a difficult way to determine the genotype?
Because a cow only produces one offspring at a time, not several like mice, cats, dogs, flies or frogs do. In order to have a successful test cross, the species of animal used must have at least 10 to 20 offspring to study from.
Why is it difficult to determine the genotype of an organism that has a dominant phenotype?
NO, because a dominant phenotype could either be homozygous or a heterozygous.so unless you are sure about the genotype of parents we can't determine it...but we can determine the genotype of a person showing reccessive phenotype, as a recessive trait always expresses itself in a homozygous condition...
What is the expected phenotypic ratio resulting from a homozygous dominant?
I will use a simple example of Height...... T (tall) is dominant over t (short). So we have 2 ways to make a tall offspring: TT and Tt 't' is a recessive trait so it will take two 't's together to make a short offspring: tt Homozygous dominant means it has 2 of the same allele, and that this allele is the dominant one. So T T Heterozygous means it has 2 different alleles. So T t A monohybrid cross simply means "find out how this gene is inherited by the offspring". To answer the question we put the parents (TT and Tt) in a punnet square... .....T.......T T....TT...TT t.....Tt....Tt The phenotype (how they actually look) is tall for all 4 of them. TT is tall and Tt is also tall (even though they have a short 't' allele, the tall 'T' allele is dominant, making them tall anyway. Therefore the ratio of tall to short is 4:0 which can be reduced to 1:0
Which breeding method results in the production of offspring with the same genotype as the parents?
Pure breeding through self-fertilization or inbreeding results in offspring with the same genotype as the parents. This method involves mating individuals with homozygous genotypes for specific traits to maintain desired characteristics in the offspring.
What describes the mating of organisms that have different homozygous alleles for a single trait?
The mating of organisms with different homozygous alleles for a single trait is referred to as a monohybrid cross. In this scenario, one parent possesses two dominant alleles (homozygous dominant), while the other has two recessive alleles (homozygous recessive). The offspring produced from this cross will be heterozygous, displaying the dominant trait, while the recessive trait will not be expressed in the phenotype. This type of cross is often used to illustrate basic principles of Mendelian inheritance.
A red-eyed fly mates with a blue-eyed fly. The offspring all have red eyes. What is the dominant trait?
A dominant trait, when present, is always expressed. So if the offspring of a red eyed and blue eyed mating are all red, then red must be dominant because it is the trait expressed.
What is the dominant trait when a red-eyed fly mates with a blue-eyed fly resulting in offspring that all have red eyes?
A dominant trait, when present, is always expressed. So if the offspring of a red eyed and blue eyed mating are all red, then red must be dominant because it is the trait expressed.
What are the phenotypes and genotypes of the offspring from the mating of a person with type B blood with a person with type O blood in codominance?
The offspring blood type with parents that have O and B blood types would come out with O positive. This is taught in biology. Based on the details of the question this initial answer is incorrect. Type O is not a dominant characteristic merely a common one. A person with type B blood could have a genotype of BO or BB so there are two potential answers to this question. The parent with O type blood can only have an OO genotype. If the parents are BB and OO then all offspring will be type B phenotypically and their genotype will be BO. If the parents are BO and OO then 50% of the offspring will have the BO genotype and 50% will have the OO genotype. Phenotypes will be B and O respectively. Since the question did not include any mention of the RH factor there is no way to determine that the offspring would be positive or negative. True codominance in blood types really only shows up with the AB genotype where the phenotype of the individual matches the genotype and the person has both A and B blood factors.
