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Wewaii [24]
3 years ago
10

Do fish feel pain? and if they do what pain

Biology
1 answer:
olga55 [171]3 years ago
8 0
Fish feel pain just as must as pain you have pain
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Scientists combine evidence from fossils, body structures, early development, DNA, and protein structures to:___________a. deter
umka2103 [35]

Answer:

b. determine the evolutionary relationships among species

Explanation:

Biologists through the analysis of characters obtained from molecular, morphological, embryological, physiological and behavioral analyzes look for the relationship between species and their origin.Through these coincidences phylogenetic trees are made.

5 0
2 years ago
) When predicting the phenotype of the offspring from a dihybrid cross, why is it so important that each gene is located in a di
Bond [772]

Answer:

a) The genes present on separate chromosomes exhibit indepedent assortment.

b) The genotype of tall and purple flower parent= TTPp

The genotype of short and purple flower parent: ttPp

Explanation:

a) In a dihybrid cross, if the genes are present on the same chromosome, they will not exhibit independent assortment. The genes present on the same chromosome are called linked genes. Linked genes are inherited together. The absence of independent assortment of a linked gene gives more of parental types in F2 progeny. Therefore, if genes are not present on a separate chromosome, Mendel’s ratios deviate.

b) Alleles for tallness and purple flower are dominant. In the progeny, all the plants are tall. This means that the dominant tall plant is homozygous. With respect to flower color, the trait exhibits segregation of dominant and recessive alleles and both purple and white flower progeny are obtained. This makes both the plants heterozygous for the flower color gene.  

The genotype of tall and purple flower parent= TTPp

The genotype of short and purple flower parent: ttPp

7 0
2 years ago
Which is an adaptation that helped plants survive on land?
ANEK [815]

Answer:

Formation of cuticles. (A P E X)

Explanation:

6 0
3 years ago
When oxygen first was released in the early seas it combined with iron to form
Liono4ka [1.6K]
“D” would be the best answer choice for me.... not sure if it’s correct though
3 0
3 years ago
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Some plants have stems called
inna [77]

Answer:

Runners

Explanation:

stems are usually upright and prop up the plant to gather sunlight, however, some stems grow along the ground. These stems are called runners and the plant itself is called a stolon. Runners are involved in asexual reproduction of plants. They have nodes along them which can grow into another plant.

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3 years ago
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