Tongue-rolling is a human trait that follows an autosomal recessive pattern of inheritance. a girl with the tongue-rolling trait has two brothers who do not have this trait. what is true of the children's parents? one parent must be homozygous dominant and the other is either heterozygous or homozygous recessive. both parents must be homozygous dominant. one parent must be heterozygous and the other is either heterozygous or homozygous recessive. both parents must be homozygous recessive.

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?

Amines amides and amino acids are categories of

What materials must dams have to produce electricity, and what must occur?