Ask question

Ask question

All categories

3 years ago

8

Which question is true about food chains A. All food chains start with consumers B. The arrow shows the movement of energy C. Th

e arrow shows which animals are herbívores D. The arrow show which animal eat meat

2 answers:

lesya [120]3 years ago

4 0

The answer is B, energy is transferred throughout the food chain, hence the arrows.

Masja [62]3 years ago

3 0

B- The arrow shows the movement of energy

You might be interested in

In fruit flies, the gene for red eyes (R) is dominant and the gene for sepia eyes (r) is recessive. If a red-eyed heterozygous f

ladessa [460]

The answer is Rr and rr.

We know:
r - recessive allele
R - dominant allele
RR - dominant homozygote with red eyes
Rr - heterozygote with red eyes (since one dominant allele R can mask recessive allele r)
rr - recessive homozygote with sepia eyes

Heterozygote Rr can give to the offspring either dominant allele R or recessive allele r. Recessive homozygote rr can give to the offspring only recessive allele r (take a look at the uploaded image of Punnett square).
After crossing the parents:
Parents: Rr x rr
Offspring: Rr rr Rr rr

So:
2 out of 4 offspring will be with heterozygous with red eyes Rr: 2/4 = 0.5 = 50%
2 out of 4 offspring will be with homozygous with sepia eyes rr: 2/4 = 0.5 = 50%

8 0

4 years ago

Read 2 more answers

Which of the following processes takes place during prophase?

kaheart [24]

Answer:

A) Mitotic spindles form

Explanation:

The mitotic spindle begins to develop during prophase. As the cell's two centrosomes move toward opposite poles, microtubules gradually assemble between them,

7 0

3 years ago

What are the major events that occur during each of the stages in the life cycle of a cell such as a skin cell, i.e., Interphase

saul85 [17]

Answer:

The interphase: <em>DNA duplication</em>; The prophase: <em>Nucleus disappear</em>; The metaphase: <em>Chromosome line up at the middle of cell</em>; The anaphase: <em>Chromatids separation</em>; The telophase: <em>New cell membrane formed</em>; The cytokinesis: <em>Divided into two cell</em>.

Explanation:

A cell cycle includes 4 main phases: G0 phase, Interphase, Mitotic or Meiosis phase, Cytokinesis.

G0: cell has left the cycle and stop dividing
Interphase: including G1, S, G2: cell increases its size, and the DNA is duplicated to prepare for cell division.
Mitotic or Meiosis phase: including prophase, metaphase, anaphase, telophase. In this stage, the nucleus and materials are divided.
Cytokinesis: Cell divides into two daughter cells.

7 0

3 years ago

Good morning friends

ipn [44]

Answer:

:D

Explanation:

6 0

4 years ago

Read 2 more answers

Two main types of designs used specifically in human lifespan studies are

fenix001 [56]

Answer;

-Correlational; experimental

Two main types of designs used specifically in human lifespan studies are correlational and experimental.

Explanation;

-Psychological studies vary in design. In correlational studies a researcher looks for associations among naturally occurring variables, whereas in experimental studies the researcher introduces a change and then monitors its effects.

-An experiment isolates and manipulates the independent variable to observe its effect on the dependent variable, and controls the environment in order that extraneous variables may be eliminated. Experiments establish cause and effect. A correlation identifies variables and looks for a relationship between them.

7 0

3 years ago