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andrew-mc [135]
3 years ago
10

Can someone help me

Biology
2 answers:
Stels [109]3 years ago
5 0
True as there may be many different types of minerals in rocks (like granite)
jenyasd209 [6]3 years ago
3 0
It should be true...
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A person with type A blood (AO) is crossed with
riadik2000 [5.3K]

Answer:

25% type A, 25% type B, 25% type AB, 25% type O

If you put it into a punnett square:

          B                  O

A        AB                 AO

O       BO                 OO

you get 25% for each phenotype

7 0
2 years ago
A gene that affects hair length in dogs has two alleles. The allele for short hair (L) is dominant
Lelechka [254]

Answer:

This question lacks options, the options are:

A. Only recessive alleles are inherited from homozygous parents.

B. Dominant alleles grow weaker as they are passed from parents to offspring.

C. Only the parent with a dominant allele can pass that allele to offspring in sexual reproduction.

D. A heterozygous parent has an equal chance of passing either the dominant allele or the recessive allele to offspring.

The answer is D

Explanation:

This question involves a single gene coding for hair length in dogs. The allele for short hair (S) is dominant over the allele for long hair (s). This means that allele 'S' will always mask the phenotypic expression of allele 's' in a heterozygous state.

According to the question, two heterozygous dogs (Ss) were crossed to produce 6 shortt-haired offsprings and 2 long-haired offsprings. An heterozygous organism is that which contains two different alleles for a particular gene i.e. a combination of dominant and recessive alleles.

Based on this, during meiosis or gamete formation, an heterozygous dog (Ss) will produce gametes with the short hair allele (S) and long hair allele (s) in equal proportion i.e. 50-50. When the two gametes containing the recessive alleles (s) produced by each heterozygous parent fuses, an offspring with a recessive phenotype (long hair, ss) is produced.

Hence, a long-hair

phenotype can appear in the offspring of two short-haired dogs because a heterozygous parent has equal chance of passing either the dominant or recessive allele to the offspring.

6 0
3 years ago
Which best describes how energy from the sun helps to maintain life on Earth?
xeze [42]

Answer:

without the sun we probably be freezing that's why we need the son it keeps us warm and the sun gives use radiation energy which could help us power things.

Explanation:

5 0
3 years ago
Which of the following statements regarding a DNA double helix is true? The amount of adenine is equal to the amount of thymine,
Elena-2011 [213]

Answer:

Option (1).

Explanation:

DNA (deoxyribo nucleic acid ) is the genetic material present in all the organisms except some viruses. DNA structure follows the Chargaff's rule.

Accoprding to Chargaff's rule, the ratio of purines to pyrimidines in a DNA molecule is equal to 1. The amount of guanine is nearly equal to the amount of cytosine whereas the amount of thymine is nearly equal to the amount of adenine.

Thus, the correct answer is option (1).

6 0
3 years ago
A small radio speaker is suspended inside a spherical balloon. The balloon has a radius of 0.50 m. The power of the sound wave e
sergey [27]

Answer:pls no ban me only poor children

Explanation:

7 0
3 years ago
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