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balu736 [363]
3 years ago
11

Think about the concept of evolution.

Biology
1 answer:
castortr0y [4]3 years ago
7 0

its for the first onehypothesis

h

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The picture shows the dihybrid cross of 2 guinea pigs.
kramer

Picture from another source is attached

Answer:

1. BbRr

2. Black, rough fur

3. bbRR

Explanation:

1. The genotype of the parents can be seen at the top of the cross "BbRr". The genotype is what alleles the parents have. In this case, it is the alleles of two different genes - for color and texture of fur. The genotype gives rise to 4 possible allele combinations that an offspring can inherit (BR, Br, bR or br)

2. The dominant allele is usually displayed as a capital letter, and the recessive as lowercase. Without further information, we will assume this is the case. The parents are heterzygous for both traits, meaning they each carry a dominant and recessive allele for both traits. That means the dominant allele will be expressed in the phenotype. Therefore, the guinea pigs will have black, rough fur.

3. Empty box shown in the attachment. We simply read the column and row  of alleles that are contributing to this offspring's genotype. We can see looking at the square that from one parent (top) the baby will inherit bR, and from the other parent (left) it will inherit bR as well. This means the baby's genotype will be bbRR

3 0
3 years ago
Some ________-rich minerals will align themselves with the existing magnetic field when they ________ from a magma
Nonamiya [84]

The iron-rich minerals present in the magma align themselves with the already existing magnetic field of the Earth. When the magma starts to cool down, the iron rich minerals are the first to solidify first. The magnetic field of the Earth align these minerals as the needle of the compass. The alignment of these iron-minerals is fixed once the magma is solidified completely.

Hence, the given blanks can be filled with 'iron and solidify'. respectively.

7 0
3 years ago
Which country is represented by the number 1?
Kipish [7]
I would have to say C) Mongoli; it’s part of an Asian route so I guess it should be that :) hope this was helpful
3 0
4 years ago
Read 2 more answers
Some students want to test different soils to find out which ones absorb heat the fastest. For the first test, they put 500 gram
tankabanditka [31]

Answer:

Weight of the soil (500g)

Explanation:

According to this question, some students are conducting an experiment in order to find out which of the different soils used absorb heat the fastest. For the first test, they put 500 grams of SAND in a beaker and put a thermometer in the sand.

In an experiment, the variables that must be kept constant for all the groups is called the CONSTANT OR CONTROLLED VARIABLE. This is done in order not to influence the outcome of the experiment. In this case, the weight (500g) of the soil should be kept the same for all other tests.

This means that for the remaining soil being tested, 500g of each type of soil should be used.

4 0
3 years ago
How did Mendel make crosses with his plants?A., He planted the seeds of each type together, and they grew into a single plant. B
PilotLPTM [1.2K]

Answer:

The correct answer will be option-C.

Explanation:

Gregor Mendel is known for his experiments performed on the pea plants on the basis of which he was able to predict the principles of inheritance. He used seven different characters to understand the inheritance pattern of the traits in generations.

He performed monohybrid (single) and dihybrid (two) crosses by growing the plants from the seeds and performing cross-fertilization and self-fertilization. He performed self- fertilization by emasculation and cross-fertilization by shedding the pollen of another plant over ovules of another plant.

Thus, Option-C is the correct answer.

5 0
3 years ago
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