n Andalusian fowls, black (BB) and white (bb) individuals are homozygous. When a homozygous black bird (BB) is crossed with a homozygous white (bb) bird offspring are all bluish-gray (Bb). Show the cross as well as the genotypes and phenotypes of the parental cross between two heterozygous parents. 1. P1: _________ x _________ 2. Punnett Square: 3. Genotype symbols: 4. Genotype in words: 5. Genotypic ratio: 6. Genotypic %: 7. Phenotype symbols: 8. Phenotype in words: 9. Phenotypic ratio: 10. Phenotypic %:

ABO blood group is co-dominant for AB and O is recessive. Rh (+/-) factor is completely dominant. A man with O/positive blood and a woman with A/negative blood have six children. All of their children have A + blood type. What can you conclude about the parents’ genotypes? Group of answer choices Both mother and father are likely homozygous  at both loci Mother was homozygous at the ABO locus but heterozygous at the Rh factor locus Father was homozygous at the ABO locus but heterozygous at the Rh factor locus Mother was heterozygous at both loci

Feather colour in parakeets is controlled by two genes. Blue colour (B) is dominant over absence of colour (b). Yellow colour (Y) is dominant over absence of colour (y). When a B allele and a Y allele are present, a green parakeet is produced.The probability of obtaining a female or male parakeet is the same as for humans. A green parakeet crossed with a white parakeet produced offspring with four different colour patterns.What is the genotype of the green parakeet?  Answer

#1b) An allele for coat color in mice, Y, produces a yellow coat color when present. The phenotypes of the F1 generation are shown. A cross between a Non-yellow mouse and yellow mouse produces half yellow and half non-yellow progeny (offsprings). Non-yellow happens to be white in this example, but it does not need to be; it can be black, grey, or some other mouse color. How does the F1 generation ratio differ from the expected mendelian ratios for a heterozygous, hybrid cross? * Yellow Non-yellow Pgeneration Yellow Yellow Meiosis Gametes 1/2 1/2 Fertilization Yellow Non-yellow F generation Non vellow Yellow Yellow Dead Support | Schoology Blog | PRIVACY POLICY | Terms of Use

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Dihybrid crosses and must show the Punnet square