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3 years ago

Y’all help me please

Biology

1 answer:

a_sh-v [17]3 years ago

5 0

Open sacricity to ge the answer on the pdf

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Ponds and lakes form when water collect in areas of land?

Natalka [10]

Is this a yes or no question

6 0

3 years ago

Consider a cross between two Brassic rap parent plants known to be heterozygos tall. Using a punnett square to solve this cross

bearhunter [10]

Answer:

Genotypic results: 1 (TT):2 (Tt) :1 (tt)

Homzygous Dominant: 1/4

Heterozygous: 1/2

Homzygous Recessive: 1/4

Phenotypc results: 3 tall: 1 short

Tall: 3/4

Short: 1/4

Explanation:

This question involves a gene coding for height. The alelle for tallness (T) is dominant over the allele for shortness (t). According to this question, a cross between two Brassic rap parent plants known to be heterozygos tall (Tt) is performed.

Each parent will produce gametes T and t. Using these gametes in a punnet square (see attached image), the following offsprings will be produced:

TT (1), Tt (2), and tt (1)

Based on this result, the following results are obtained:

Genotypic results: 1 (TT):2 (Tt) :1 (tt)

Homzygous Dominant: 1/4

Heterozygous: 1/2

Homzygous Recessive: 1/4

Phenotypc results: 3 tall: 1 short

Tall: 3/4

Short: 1/4

6 0

3 years ago

Why is it important for the chromosomes to make copies of themselves before mitosis occurs

valina [46]

So that both sets of cells will have sets of chromosomes after it copies and divides

3 0

3 years ago

With certain diseases, even a single case is treated as an epidemic. <br> a. True <br> b. False

Bumek [7]

Its false i pretty sure

5 0

3 years ago

Read 2 more answers

A farmer uses triazine herbicide to control pigweed in his field. For the first few years, the triazine works well and almost al

erik [133]

Answer:

A) Natural selection caused the pigweed to mutate, creating a new triazine-resistant species.

Explanation:

Due to constant use of triazine, the weed will build resistance to it over time unlocking the herbicides codes and making it ineffective.

Natural selection will play out allowing this weeds to bring about a sudden change in their genome that will become resistance, this resistance breed is what will then be produced over time because mutation is heritable and the herbicide then becomes ineffective and the weed continues to multiply and increase in volume.

4 0

3 years ago