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According to the chart below, what codon represents the amino acid Histidine (His)?

(1 point)
Responses

GGA
GGA

AAU
AAU

CAU
CAU

UUC

3 answers

The codon that represents the amino acid Histidine (His) is CAU.

In pea plants, tall plants (T) are dominant over short plants (t). If a heterozygous tall pea plant is crossed with a homozygous recessive short pea plant, what percentage of the offspring is expected to be tall? (HINT: set up a Punnett Square).(1 point)
Responses

0%
0%

25%
25%

50%
50%

75%

To find the percentage of tall offspring from a cross between a heterozygous tall pea plant (Tt) and a homozygous recessive short pea plant (tt), we can set up a Punnett Square.

The possible gametes for each parent are:

  • Heterozygous tall plant (Tt) can produce gametes: T and t
  • Homozygous recessive short plant (tt) can produce gametes: t and t

Setting up the Punnett Square:

       T      |      t
    -----------------
t  |   Tt   |   tt   |
    -----------------
t  |   Tt   |   tt   |

From the Punnett Square:

  • Tt (tall) offspring: 2
  • tt (short) offspring: 2

Out of the 4 offspring, 2 are tall (Tt) and 2 are short (tt).

To find the percentage of tall offspring:

  • Tall offspring = 2
  • Total offspring = 4

Percentage of tall offspring = (2 tall / 4 total) × 100 = 50%

So, the answer is 50%.