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Whitepunk [10]
2 years ago
13

I’m having trouble understanding this can someone plz explain?

Biology
1 answer:
Leni [432]2 years ago
8 0

Answer:

look at the pictures

Explanation:

1. If we cross the parental generation which is RR x rr, the probability of the F1 generation to get  rough coat is 100% and they will be a carrier of the recessive trait smooth coat.

Since the phenotypic ratio is 100% heterozygous Rr, in crossing the F1 to get the F2, we will use the genotype Rr. To get the F2, use the cross  Rr x Rr.

The phenotypic ration for F2 is 3:1. There is 75% to get rough coat and 25% smooth. The answer is based on the result on the Punnett square. On the other hand, the genotypic ratio is 1:2:1. There is 25% probability to get RR genotype, 50% Rr, and 25% rr.

2. Since the two parental mice got 6 albino offspring and 5 brown mice offspring, it is approximately 50%. it takes a parental mice who is Brown that is carrying an albino trait crossed with an albino to get offspring with almost the same number. Therefore, the genotype of the brown mice is Aa.

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In pea plants purple flowers are dominant to white flowers.
algol13

Answer:

100%

Explanation:

This question involves a single gene coding for flower color in pea plants. The allele for purple flowers (P) are dominant to white flowers (p). This means that purple color will be expressed in a heterozygous state.

According to this question, If two white flowered plants are cross i.e. pp × pp, the following gametes will be produced by each of the parent: p and p. Using these gametes in a punnet square (see attached image), ALL (100%) of the offsprings will be white colored (pp).

Therefore, 100% of the offsprings will be white flowered.

6 0
3 years ago
How long does it take for a water bottle to decompose?.
Elodia [21]

Answer:

450 years

Explanation:

well, according to some researchers, They estimate that due to the PET used in objects like plastic bags, plastic water bottles and plastic straws, it could take upwards of 450 years to decompose.

8 0
3 years ago
The shape of the external ear is maintained by ________. Select one: a. hyaline cartilage b. adipose tissue c. fibrocartilage d.
d1i1m1o1n [39]

Answer:

D) elastic cartilage

Explanation:

Cartilage is a connective tissue which is fibrous in composition which provides its physical properties like the softness, elasticity and strength.

There are three types of cartilages- the elastic, hyaline and the fibrocartilage. Among these three the cartilage which forms the external ear is the elastic cartilage. The elastic cartilage is composed of the elastin protein, type II collagen and the elastic fibres. The presence of the elastin proteins and fibres allows the ear to be an elastic organ.

Thus, Option-D is the correct answer.

4 0
3 years ago
Describe the structure of amino acids, including what makes amino acids different from each other.
Sphinxa [80]
The amino acids<span> in a protein are bonded to </span>each other<span> with peptide bonds - hence the term for a polymer of </span>amino acids<span> is a polypeptide. There are 20 </span>different amino acids<span>, and they all share the same general </span>structure<span>. In the centre of the </span>amino acid<span>is an assymetric carbon atom called the alpha carbon. I hope that you have a good day and i hope this helps you out

</span>
4 0
3 years ago
What differs among DNA structures of different species?
pogonyaev

Answer:

It is the arrangement of nucleotide within the genes which differs among DNA structures of different species. Each gene contains several codons which is three nucleotide long

3 0
3 years ago
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