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PtichkaEL [24]
4 years ago
11

L is for pricly leaves

Biology
1 answer:
rosijanka [135]4 years ago
7 0

Answer:

the possible genotypes are LL and Ll

Explanation:

LL and Ll give dominant trait which is pricly leaves

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In cherry tomatoes, red color (R) is dominant to yellow color (r). If two heterozygous plants are crossed, what percentage of th
Nana76 [90]

Answer:

50

Explanation:

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3 years ago
What is a major difference between facilitated diffusion and active transport?
xenn [34]

Answer:

The correct option is<em> A. Active transport moves substances against the concentration gradient.</em>

Explanation:

Active transport can be described as a transport mechanism in which molecules tend to move against the concentration gradient i.e from an area of lower concentration to an area of higher concentration. Energy is needed for this process to occur.

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3 0
3 years ago
Sickle-cell trait is caused by a single defective allele, but sickle-cell disease only occurs in individuals that are homozygous
Pavel [41]

Answer:

6,25%

Explanation:

Considering that the couple has a trait of sickle cell anemia, we know that both are heterozygous for the disease (Aa) and therefore can have children with the following genotypes:

Parents: Aa X Aa

Children: AA(A x A), Aa(A x a), Aa (a x A) and aa(a x a)

Knowing that sickle cell anemia only occurs in homozygous individuals, the probability for children to have the disease according to each crossing is:

A x A = 1/4 = 25%

A x a = 1/4 = 25%

a x A = 1/4 = 25%

a x a = 1/4 = 25%

The probability of forming each homozygous child (aa) is 1/4 or 25%. Since they are two children, the probability of both having sickle cell anemia is calculated by multiplying the probability of each, so:

1/4 × 1/4 = 1/16 = 0.0625 = 6.25%

It is concluded that the probability of a heterozygous couple for sickle cell anemia to have two children with the disease is 6.25%.

6 0
3 years ago
1. What are the Galapagos Islands?
ki77a [65]

Answer: there are islands

Explanation:

3 0
3 years ago
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Which lettered box could represent the rock conglomerate?
AlekseyPX

Answer:E

Explanation:I think it is

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