a. When crossing triply heterozygous flies (Aa Bb Cc), where each gene has one dominant allele and one recessive allele, the phenotypic ratios among the progeny would be 1:1. b. The genotype of the wild-type male can be deduced based on the phenotypic ratios observed in the crosses with the tester strains.
a. If you crossed triply heterozygous flies (Aa Bb Cc), where each gene has one dominant allele and one recessive allele, you can use the product rule to predict the phenotypic ratios among the progeny.
For each gene, the possible gametes are A and a, B and b, C and c. When you cross the triply heterozygous flies, you can determine the possible genotypes of the offspring:
Genotypes:
AA BB CC (wild type)
AA BB Cc (wild type)
AA Bb CC (wild type)
AA Bb Cc (wild type)
Aa BB CC (wild type)
Aa BB Cc (wild type)
Aa Bb CC (wild type)
Aa Bb Cc (wild type)
The phenotypic ratios can be determined by counting the number of wild-type (dominant phenotype) offspring and dividing it by the total number of offspring:
Wild-type progeny (AA BB CC, AA BB Cc, AA Bb CC, AA Bb Cc, Aa BB CC, Aa BB Cc, Aa Bb CC, Aa Bb Cc) = 8
Total number of progeny = 8 (since each possible genotype occurs once)
Phenotypic ratio: 8 wild-type : 8 total = 1:1
b. To determine the genotype of the wild-type male, we can deduce it based on the phenotypic ratios observed in the crosses with the tester strains.
In the cross with the tester strain AA bb cc, only 1/4 of the progeny are wild type. This means that the male being tested (wild-type male) must be heterozygous for the B and C genes (Aa Bb Cc) since the wild-type phenotype requires one dominant allele for each of the three genes.
In the crosses involving the other two tester strains (aa BB cc and aa bb CO), half of the progeny are wild type. This indicates that the wild-type male is homozygous for the A gene (AA Bb Cc) since the wild-type phenotype requires two dominant alleles for the A gene.
So, the genotype of the wild-type male is Aa BB Cc.
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Answer:
the genotype depends more on if its a boy or girl
Explanation:
Answer:
There ya go!!
Explanation:
Entropy is defined as the measure of heat that is available in any kind of system. When moving towards the next levels in the food chain, the distribution of heat will be less at each stage and at the lower levels of food chain the heat energy that is produced will be high and the value of entropy will be less.
Answer:
Entropy is the tendency of a system towards a larger number of random arrangements. Overall, entropy must increase during processes, so a system will tend towards greater disorder. The energy available for organisms decreases from one trophic level to another, because some of the energy is dissipated as heat from each level to the next because of that tendency toward disorder.
Explanation:
Answer:
C) Rapid reproduction
Explanation:
Invasive species reproduce rapidly, leading to population growth and colonization of new environments. They often lack high genetic diversity, a specialized diet, and strong competition with native species. Their rapid reproduction and adaptability to new environments make them a threat to native species.
Answer:
Prefrontal cortex
Explanation:the prefrontal cortex is the forward most part of the frontal lobe.it consists about 10% of the brain..it is associated with making decisions and evaluation of right and wrong.it could also influence the personality of a person.
A damage to the prefrontal cortex can cause change in Personality, rudeness and make the person incapable of making good judgement and social skills.
Meiosis
Cell division
Sexual reproduction