The statement in the beginning of the question, "scientists have found that although plants require light to carry on photosynthesis Very high levels of sunlight can kill some plants" suggests that there is a certain range of levels of sunlight that plants can survive in. Therefore, only choice B. with a specific range of conditions is supported by the evidence. Hope I could help.

8 0

3 years ago

In a cross between two heterozygous tall and purple flowers (TtPp x TtPp), what would the

Goryan [66]

Answer:

9:3:3:1

Explanation:

This question involves two different genes coding for height and flower color respectively. The first gene posseses allele T (dominant) and t (recessive) while the second gene possesses allele P (dominant) and p (recessive).

According to this question, two heterozygous tall and purple flowers are crossed i.e. (TtPp x TtPp). Each parent will produce the following gametes combination:

TtPp - TP, Tp, tP, tp

Using these gametes in a punnet square, the following proportion of offsprings will be produced:

T_P_ (tall, purple) = 9

T_pp (tall, white) = 3

ttP_ (short, purple) = 3

ttpp (short, white) = 1

Hence, the ratio of this cross is 9:3:3:1

5 0

3 years ago

Which portion of the plant life cycle is haploid?

sp2606 [1]

It is The multicellular part

3 0

3 years ago