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2 years ago

What is adaptive radiation?

Biology

1 answer:

LUCKY_DIMON [66]2 years ago

3 0

Answer:

C. The evolution of many species from a single ancestor over a long period of time

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The rock cycle is not important to living organisms.

trapecia [35]

you got this

Explanation

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4 years ago

In the polymerase chain reaction, what is primer molecule made which of enables replication to commence?

docker41 [41]

Answer:

primers and a DNA molecule

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2 years ago

What does it mean to say genes are self-regulating?

kumpel [21]

It means that they are not like pre-set blueprints. They react differently according to changes in the environment.<span />

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3 years ago

The term describing bacteria with flagella that are arranged as a tuft coming from one pole is __________.

Masteriza [31]

Answer:

The correct answer is- Lophotrichous

Explanation:

There are four types of bacteria based on the presence and distribution of flagella on them. The bacteria which have only one flagellum at one pole that bacteria is called monotrichous.

The bacteria which have single flagella at both sides are called amphitrichous. Bacteria that have numerous flagella distributed evenly on their body surface are called Peritrichous.

The bacteria which have a tuft of flagella attached on one side or pole are called lophotrichous. Therefore the correct answer is lophotrichous.

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4 years ago

In peas, tall plants (T) are completely dominant over short plants (t). You cross two heterozygous pea plants Use a Punnett squa

Nikitich [7]

Answers and Explanation:

Find enclosed the Punnet square.

T= dominant allele

t= recessive allele

Tt= heterozygous genotype

TT and tt= homozygous genotype

- The male pea plant's genotype is Tt (heterozygous)

- The female pea plant's genotype is Tt (heterozygous)

- Male gametes: T and t

- Female gametes: T and t

- The expected genotypic ratio of the offpring will be:

TT: Tt: tt ⇒ 1: 2: 1

1/4 of the offpring will be TT genotype (dominant homozygous), 1/2 of the offpring will be Tt (heterozygous) genotype and 1/4 of the offpring will be tt genotype (recessive homozygous).

- The expected phenotypic ratio of the offpring will be:

tall : short ⇒ 3 : 1

3/4 of the offpring will be tall (TT and Tt) and the restant 1/4 will be short (tt).

4 0

3 years ago