All categories

3 years ago

PLEASE HELP ASAP!!!!

Biology

1 answer:

marin [14]3 years ago

6 0

Answer:

B. Smaller fragments travel faster and farther than larger fragments.

Explanation: Shorter molecules move faster and migrate farther than longer ones because shorter molecules migrate more easily through the pores of the gel. This phenomenon is called sieving. [2] Proteins are separated by charge in agarose because the pores of the gel are too large to sieve proteins.

You might be interested in

In beans the pod texture and growth form genes are located on different chromosomes. There are two varieties of beans in a farme

irina1246 [14]

Answer:

a. Genotype in F1 - TtBb

Phenotype in F1 - tough pods, bush-type growth

b. Proportion of F2 that are heterozygous for bush-type growth form = 5/8

c. Proportion of the F2 with tender pods = 1/4

d. Proportion of F2 that are heterozygous for growth form and have tender pods = 1/8

Explanation:

Since the two traits are located on different chromosomes, they will independently assort during gametes formation. T is dominant over t and B is dominant over b.

Two true-breeding varieties were crossed at the beginning of the program:

TTBB x ttbb

All F1 plants will have the genotype TtBb with tough pods and bush-type growth form.

Advancing the cross to F2:

TtBb x TtBb

Progeny

1 TTBB - tough pods, bush-type

2 TTBb - tough pods, bush-type

2 TtBB - tough pods, bush-type

4 TtBb - tough pods, bush-type

1 TTbb - tough pods, climbing-type

2 Ttbb - tough pods, climbing-type

1 ttBB - tender pods, bush-type

2 ttBb - tender pods, bush-type

1 ttbb - tender pods, climbing-type

Proportion of F2 that are heterozygous for bush-type growth form = 10/16 = 5/8

Proportion of the F2 with tender pods = 4/16 = 1/4

Proportion of F2 that are heterozygous for growth form and have tender pods = 2/16 = 1/8

7 0

3 years ago

18) Which process occurs in fungi and has the opposite effect on a cell's chromosome number than does meiosis I?

grin007 [14]

That is binary fission, 'cause in this process, chromosome number doubles to it's original value whereas in meiosis it gets halved.

In short, Your Answer would be Option D

Hope this helps!

3 0

3 years ago

From what is known about spring tides and neap tides, you can conclude that

Andreyy89

I would recommend b. cause the moon does help tides

5 0

3 years ago

Read 2 more answers

Imagine you are protesting against global warming. What would you protest sign say?

Igoryamba

Help earth it helps u that’s what I believe

8 0

3 years ago

Read 2 more answers

How do the daughter cells at the end of mitosis and cytokinesis compare with their parent cell when it was in G 1 of the cell cy

Vikentia [17]

Answer:

b. The daughter cells have the same number of chromosomes and the same amount of DNA.

Explanation:

Mitosis is the cell division that maintains the DNA amount and chromosome number in daughter cells. This is due to the fact that each mitosis is preceded by one round of DNA replication in S phase.

For example, if the parent cell had 2n DNA in 46 chromosomes, the daughter cells at the end of mitosis and cytokinesis would also have 2n DNA in 46 chromosomes.

8 0

3 years ago