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3 years ago

The following diagram shows sea cliffs and small, sandy beaches formed along a coastline.

Biology

1 answer:

JulsSmile [24]3 years ago

8 0

Answer:

Weathering and erosion formed the cliffs, and deposition formed the beaches.

Explanation:

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In a plant, leaf color and leaf shape are controlled by two linked genes Leaves of the wild-type plant are red. A recessive muta

Brrunno [24]

Solution :

Red is dominant over the white leaves and pointed is dominant over smooth.

Red = R , white = r

Pointed = P , smooth = p

Red, pointed x white,smooth ------ Parents

RRPP rrpp

RP rp ----------------- Gametes

RrPp -------- $F_1$

(red, pointed)

When this $F_1$ is test crossed,

RrPp x rrpp ---- $F_1$ test cross

Gametes → rp

RP ---------- RrPp - red, pointed - 36 parental type

Rp ---------- Rprp - red, smooth - 14 re- combination

rP ----------- rrPp - white pointed - 10 re- combination

rp ----------- rrpp - white, smooth - 40 - parental type

Total = 100

As this ratio is deviating from 1:1:1:1, it indicated the two genes are linked.

Linkage strength = percentage of crossing over = map distance between the genes.

Percentage crossing = recombination frequency = percentage of recombination.

Recombination frequency $=\frac{\text{total no. of recombination}}{\text{total no. of progeny}}\times 100$

$=\frac{14+10}{100} \times 100$

= 24 %

= 24 map units

4 0

3 years ago

A type of asexual reproduction where part of an organism breaks off and develops as a new organism

erastova [34]

The answer is budding. IN this type of asexual reproduction, the offspring are genetically identical to the parent. Examples of an organism that reproduces by budding include hydra, starfish, corals, and sponges. Yeast, fungi, also reproduce asexually by budding.

3 0

4 years ago

Leaves curving towards sunlight are examples of _____.

aleksklad [387]

The correct answer is phototrophism.

Phototrophism is said to be the growth of a plant toward a source of light.

It is response to the stimulus of light and is seen when a plant bends towards the direction that light is coming from. Response by plants to a stimulus is called tropism. The word or prefix "photo" means or refers to light. Therefore phototropism simply means response to light.

Phototropism can be especially evident in the jungle where the jungle floor gets very little light. If a tall tree falls to the ground, it leaves a gap in the canopy through which sunlight streams to the ground. Many jungle plants growing on the ground will bend towards the gap and rapidly grow towards the source of light.

4 0

3 years ago

Read 2 more answers

Which of these best explains an Endothermic change?

Mnenie [13.5K]

Answer:

Explanation:

An endothermic process is any process which requires or absorbs energy from its surroundings, usually in the form of heat. It may be a chemical process, such as dissolving ammonium nitrate in water, or a physical process, such as the melting of ice cubes.

5 0

3 years ago

If you comment a shorten url link, you will be reported.

anzhelika [568]

Answer:

The offspring plant must have genotype Rr for flower color (pink flowers) and Ww for seed shape (wrinkled). In fact we know more: we know the R and W came from one parent, so are on the same chromosome, and also the r and w on the other chromosome, from the other parent. We write this RW/rw.

Explanation:

When the genotype of a carnation is heterozygous for the trait (Rr), the result is a pink color that comes from the incomplete dominance of the alleles. In codominance there are two or more dominant alleles.

3 0

3 years ago