All of these things occur during interphase except:
B. Only occurs during cell division
Interphase is where the cell grows and duplicates its DNA, and this process comes before cell division. Interphase does not occur during cell division, but prepares for it.
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:
C. The six-kingdom system has three domains: two domains separate all prokaryotic organisms into two new groups.
The food chain starts with primary producers like plants, consumed by primary consumers (herbivores). They in turn are eaten by secondary consumers (usually carnivores), and so on up the chain to the apex consumers. Decomposers break down dead material at all levels, returning nutrients to the ecosystem.
Organisms residing at various levels of the trophic structure in an ecosystem have different food sources. At the base of the food chain, we have primary producers, typically photosynthetic organisms like plants and phytoplankton. These organisms make their own food using sunlight.
The primary consumers are ordinarily herbivores that directly consume the primary producers. Following them are the secondary consumers, usually carnivores that eat the primary consumers. Similarly, tertiary consumers are carnivores that consume other carnivores.
Further up the food chain we have the higher-level consumers who feed on the lower trophic levels. At the top of the food chain are the apex consumers. Meanwhile, decomposers break down dead producers and consumers, returning nutrients to the soil.
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