GENETICS AND EVOLUTION
GENETIC BASIS OF INHERITANCE
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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3/4
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1/2
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Detailed explanation-1: -They have the same phenotype but different genotypes. In horses, the gene for white hair (W) is dominant to the gene for non-white hair (w). A horse with genotype (WW) was crossed with a horse with genotype (ww).
Detailed explanation-2: -Test crosses help researchers determine the genotype of an organism when only its phenotype (i.e., its appearance) is known. A test cross is a breeding experiment in which an organism with an unknown genotype associated with the dominant phenotype is mated to an organism that is homozygous for the recessive phenotype.
Detailed explanation-3: -What is the probability that Tiffany and Joe’s second baby will be albino like their first baby? How do you know? 25% probability is the same.
Detailed explanation-4: -The two things a Punnett square can tell you are the genotypes and phenotypes of the offspring. A genotype is the genetic makeup of the organism. This is shown by the three genetic conditions described earlier (BB, Bb, bb). The phenotype is the trait those genes express.