Question
1. if G= dark green feathers and g= light green feathers, what is the genotype for a medium green parakeet?
gG
gg
Gg
GG
2. in an incomplete dominance cross between a homozygous red flower (RR) and homozygous white flower (rr), what oercent of offspring would you expect to show incomplete dominance in their phenotype
50%
100%
0%
75%
3. An appaloosa horse has two phenotypes for their coat, brown and white. if a horse has large brown and white spots what kind of inheritance is this
incomplete dominance
recessive
dominant
co-dominant
4. did you know that dimples (D) are the phenotype of the dominant allele? if you have dimples what are your possible genotypes?
only Dd
DD, Dd, dd
DD or Dd
only DD
gG
gg
Gg
GG
2. in an incomplete dominance cross between a homozygous red flower (RR) and homozygous white flower (rr), what oercent of offspring would you expect to show incomplete dominance in their phenotype
50%
100%
0%
75%
3. An appaloosa horse has two phenotypes for their coat, brown and white. if a horse has large brown and white spots what kind of inheritance is this
incomplete dominance
recessive
dominant
co-dominant
4. did you know that dimples (D) are the phenotype of the dominant allele? if you have dimples what are your possible genotypes?
only Dd
DD, Dd, dd
DD or Dd
only DD
Answers
GPT-4o mini
Let's go through each question step by step:
1. For the question about the medium green parakeet, assuming G represents dark green feathers (dominant) and g represents light green feathers (recessive), a medium green phenotype would typically arise from the heterozygous genotype, which combines both traits. Therefore, the genotype for a medium green parakeet would be **Gg**.
2. In an incomplete dominance cross involving a homozygous red flower (RR) and a homozygous white flower (rr), the resulting offspring would show an intermediate phenotype (pink flowers). Since all offspring will have the genotype Rr, which expresses the phenotype of incomplete dominance, you would expect **100%** of the offspring to show incomplete dominance in their phenotype.
3. For the appaloosa horse with two phenotypes (large brown and white spots), the presence of both brown and white spots indicates that both traits are expressed simultaneously. This is a characteristic of **co-dominant** inheritance. So the correct answer is **co-dominant**.
4. In the case of dimples (D) being the phenotype of the dominant allele, individuals with dimples can either be homozygous dominant (DD) or heterozygous (Dd). Therefore, if you have dimples, your possible genotypes are **DD or Dd**.
In summary:
1. Gg
2. 100%
3. co-dominant
4. DD or Dd
1. For the question about the medium green parakeet, assuming G represents dark green feathers (dominant) and g represents light green feathers (recessive), a medium green phenotype would typically arise from the heterozygous genotype, which combines both traits. Therefore, the genotype for a medium green parakeet would be **Gg**.
2. In an incomplete dominance cross involving a homozygous red flower (RR) and a homozygous white flower (rr), the resulting offspring would show an intermediate phenotype (pink flowers). Since all offspring will have the genotype Rr, which expresses the phenotype of incomplete dominance, you would expect **100%** of the offspring to show incomplete dominance in their phenotype.
3. For the appaloosa horse with two phenotypes (large brown and white spots), the presence of both brown and white spots indicates that both traits are expressed simultaneously. This is a characteristic of **co-dominant** inheritance. So the correct answer is **co-dominant**.
4. In the case of dimples (D) being the phenotype of the dominant allele, individuals with dimples can either be homozygous dominant (DD) or heterozygous (Dd). Therefore, if you have dimples, your possible genotypes are **DD or Dd**.
In summary:
1. Gg
2. 100%
3. co-dominant
4. DD or Dd