First Experiment

1		On very rare occasions, when he crossed a white-eyed male to a true-breeding, red-eyed female, Morgan observed a white-eyed male among the offspring. How could this occur?
			A)	The mother's egg was missing an X chromosome and the father's sperm contained an X chromosome.
			B)	The father's sperm was missing a sex chromosome and the mother's egg contained an X chromosome.
			C)	Both the mother's and father's gametes were missing sex chromosomes.
			D)	The father's sperm contained the Y chromosome and the mother's egg was missing an X chromosome.
2		If Morgan had crossed red-eyed males and red-eyed females from the F1 generation, the ratio of red-eyed to white-eyed offspring would have been
			A)	9:3:3:1
			B)	1:1
			C)	3:1
			D)	All red
3		If Morgan had crossed a white-eyed female offspring from the test cross to a red-eyed male from the F1 generation, the ratio of red-eyed to white-eyed offspring would have been
			A)	9:3:3:1
			B)	1:1
			C)	3:1
			D)	All red
4		The results of the test cross suggest
			A)	Females can also have white eyes.
			B)	The females of the F1 generation are heterozygotes.
			C)	The male and the female parent contribute to the genotypes of their daughters.
			D)	All of the above
5		Let's suppose that Morgan later identified another allele that causes apricot eyes. This allele is recessive in heterozygous females that also carry the red allele, but dominant in females that also carry the white allele. If this allele is also in the same gene as the red and white alleles, what would be the expected ratios among the resulting offspring from an experiment in which a red-eyed female carrying the apricot allele was crossed to a white-eyed male?
			A)	1 apricot-eyed male : 1 apricot-eyed female : 1 red-eyed female : 1 red-eyed male
			B)	1 red-eyed male : 1 apricot-eyed female
			C)	1 apricot-eyed male : 1 white-eyed male : 2 red-eyed females
			D)	None of the above