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a male tiggydon is homozygous recessive for both wacky wings (w) and flashy feathers (f). he is crossed with a female who is homozygous dominant (normal wings and normal feathers) for both traits. what are the genotypes of those exotic birds? (female - male)
a) wwff - wwff
b) wwff - wwff
c) wwff - wwff
d) wwff - wwff

C) WWFF - wwff

Explanation:

First of all it is important that you know that dominant alleles are represented by capital letters, while recessive alleles are represented by lowercase letters. In addition, you also need to know which homozygous organisms are those that have two equal alleles. When these two alleles are recessive, we call these organisms homozygous recessive; when these alleles are dominant, we call these organisms dominant homozygotes. When one organism has a recessive allele and the other is dominant, it is called heterozygous and only expresses the dominant characteristic. With this we can say that the recessive characteristics are only expressed when the organism is homozygous recessive.

Based on this, we can say that the genotype for a homozygous recessive bird for both crazy (w) and flashy feathers (f) is "wwff", while the genotype for a homozygous dominant bird (normal wings and normal feathers) for both characteristics, it is "WWFF".

small, big, or no change could occur in the phenotype. it could cause something as simple as a cats ears to curl backwards or something as frighting as death. it could also occur in the protien-coding area and have an effect on that but no effect on the amino acids. what has to occur is a changing in the hox gene or the control gene.

answers are:

lysogenic     viral dna merges with host cell dna

lysogenic     no symptoms

lytic               viral dna takes over

lysogenic     virus does not destroy host cell

lytic               virus destroys host cell

lytic               induces symptoms of viral infection

lysogenic       cell reproduces and spreads provirus