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Vesna [10]
3 years ago
13

Peppered moths come in two colors, black and white. What did Kettlewell show, with regard to peppered moth populations and tree

coloring?
Biology
1 answer:
Sauron [17]3 years ago
3 0
There were more dark moths around factories because trees were darker near factories because of pollution. More light moths were found in the country away from the factories, in the forests with no factory pollution
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What piece of information is NOT stored in an offender's CODIS DNA profile?
vazorg [7]

Here is what I found, its quite interesting, I hope it helps..

https://www.fbi.gov/services/laboratory/biometric-analysis/codis/codis-and-ndis-fact-sheet

3 0
3 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 organelles are only found in plant cells?
Pavel [41]

Answer:

cell wall and chloroplasts

Explanation:

its B!! :) cell wall in plant cells, cell membrane in animal cells.

3 0
3 years ago
Question 1 (1 point)
Blizzard [7]

Answer:

c jicdhfjiovep

cc

ccc

c

c

c

c

d1125261252

Explanation: icjvhskcjyucg

8 0
2 years ago
Many flowering plants have very colorful petals like the lily seen here. What is the main purpose of these colorful
qaws [65]

Answer:

Many flowering plants have very colorful petals like the lily seen here. What is the main purpose of these colorful petals? A) to protect the plant from predators Eliminate B) to capture sunlight for photosynthesis C) to distract birds from eating the seeds D) to attract insects that pollinate the flower.

Explanation:

8 0
3 years ago
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