Question

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



(1 point)
Responses

GGA
GGA

AAU
AAU

CAU
CAU

UUC

Answer 1

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%

Answer 2

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

Answer 3

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%**.