Fur color in mice is determined by the same two genes that determine coat color in labrador retrievers (gene b for coat color and gene e for deposition of pigment). if a brown female (her father was white) is crossed with a black male from a true breeding line, what colors and proportions would you expect in their offspring?

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6. in domesticated cats, the following are independently assorting: normal ears (t) is dominant to tufted ears (t); curved whiskers (c) is dominant to straight whiskers (c); the presence of six toes (s) is dominant to five toes (s); gene for hair length is an x-linked codominant. the three phenotypes for hair length are long (xhxh), medium (xhxh), and short (xhxh); medium is the heterozygous condition. given two parents: ttccssxhxh x ttccssxhy how many different gametes could be formed in the female cat with respect to these four traits? how many phenotypes are possible in the offspring from this mating?

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