Answer:
25
Explanation:
Let stem length be represented by T and t alleles ( T is dominant over t ) and flower position be represented by A and a alleles ( A is dominant over a ).
A dihybrid cross of heterozygous pea plants will give progeny in following ratio:
TtAa X TtAa :
T_A_ = 9
ttA_ = 3
T_aa = 3
ttaa = 1
So, the ratio will be 9:3:3:1 where dwarf, terminal flower plant (ttaa) will be 1/16.
If 400 seeds are planted, (1/16)*400 = 25 plants will be expected to be dwarf with terminal flowers.
Answer:
The beetles gland stores enough hydroquinone and hydrogen peroxide to allow the beetle to release its chemical spray roughly 20 times. Thus pulsed mechanism is beneficial for the beetle survival because the system uses pressure instead of muscles to eject the spray at a constant velocity, saving the beetle energy.
Labeo = gills
Dolphin= pisces
Tadpole = hibernation
snake= internal fertilization
Eagle = aerial mode of life
Human = mammals
Answer:
A) proteins in the cell will include lysine instead of phenylalanine at amino acid positions specified by the codon UUU.
Explanation:
Anticodon is the name given to each set of nucleotides complementary to the triads of nucleotides found in mRNA. As you may already know, each nucleotide is formed by a nitrogenous base; in the case of RNA, the nitrogenous bases are adenine (A), uracilla (U), guanine (G) and cytosine (C), each nitrogenous base binds with its complementary nitrogen base. For this reason, a codon formed by the UUU crack will have as its anticodon a crack formed by AAA.
Based on this, we can conclude that in a mutant bacteria that binds lysine to tRNAs with the AAA anticodon instead of normal phenylalanine, proteins in the cell will include lysine instead of phenylalanine at the amino acid positions specified by the UUU codon.